Honestly have no idea how the contract doesn’t cover exact competitors and they didn’t flight the ad units differently since there are so many this week. The headphone ads could have slotted in here. I’d want my money back as a marketer.
The explanation for the power factor correction has an error in it. PFC isn't to correct the power coming from the wall but correcting the way the PSU draws Power from the wall. PFC ist used so that a device will draw power from the grid in a way that's similar to a resistive Load. The PSU doesn't care abot feeding electrical noise back to the grid or drawing current out of phase but the grid does.
Yup, PFC is done to to keep the balance of active and reactive power in the grid. Domestic consumers don't get charged for absorbing reactive power, so all consumer appliances strive to keep pf close to 1.
The confusion with copper/inductor and switching losses too. Higher switching frequency results in higher switching losses, but reduces the required inductor/transformer size.
@@XiaOmegaXThere are definitely some cases where you have an SFX shroud, but the rest of the space is relatively large. Also, it's perfect for weird projects (such as external water cooling), and will become very relevant when the rest of the components catch up to these demands. And even if you're not using the full 1100/1300W, you will achieve greater efficiency with running this at, say, 500W, when compared to a 700W PSU outputting 500W.
@@XiaOmegaX having 1.1mW and eject it all the time is two different things. You can put a 13600K and 4070 in itx Case, and it's still at best emitting 400W. that's why the sfx psus are now at maximum 850W.
@@laden6675yeah the first warning buzz sounds exactly like the critical error buzz my PC can make if it seriously crashes. I was worried and my heart skipped a beat even though I'm on mobile lmao
My favorite parts… were the coils embedded in the heatsinks, the usb interface, and the load responsive fan header. I absolutely love the idea of the power supply dynamically controlling cooling of the entire system through a gargantuan case fan.
A little disappointed at the errors/misrepresentations I noticed in this vid, hopefully you guys can improve in the future. Don’t dive into technicals if you aren’t sure what you are talking about! 2:30 “Where dirty wall power needs to be cleaned up by power factor correction”. This is wrong, this is not the PFC stage and does not correct power factor at all. This is just the input filter. Also, poor PF is not caused by noise, it is caused by the rectifier. The actual PFC stage is at 3:15 2:45 “Medium/high flux choke” is a term with no meaning. Perhaps that means they used a choke with a higher value inductance, but that doesn’t necessarily make it any more efficient, higher performing, or expensive. What does make it very expensive is the giant heat sink around tho. 3:15 “Next we want to stop up the voltage to 380V” This is the actual power factor correction stage, which works by boosting the voltage coming out of the rectifier. Also when talking about single/double “rail”, I’m pretty sure you mean phases not rails. 4:20 “A lot of switching losses are in transformer” That is not true, all switching losses by definition occur in the switching elements (mosfets). Loss in transformers comprise of core, eddy current, conductance, hysteresis, etc losses. Even when talking about losses in general, for a typical power supply, most of the losses are not in the transformer but indeed switching losses from the fets. However, given that this power supply is not typical, it’s probably using a soft switching topology that significantly reduces switching losses. 4:35 “Typically after transformer it’s analog but this uses MCU to convert to digital and send it out through PMBUS” This makes zero sense, I have no idea what you are talking about. The output of the transformer is your 12V power, you don’t really describe that as an analog or digital “signal”. If I had to take a wild guess, maybe you are referring to the fact that this PSU uses a digital control loop rather than an analog one? Or maybe you just wanted to mention that PMBUS out is a feature, in which case fair enough but the "normally after transformer it's analog but this is digital" still makes no sense. Cool power supply nonetheless!
I've only played it for a bit but pmbus is mostly used for telemetry used by server mb and psu and vrm of lots of consumer products, i think it can also be used to monitor 'live' power consumption but i don't know if all psu support that or only the one that i happen to use that time
@@drgenio2006 No I'm almost certain he is talking about the output of the PFC stage which is nearly exclusively 380/400V. He is talking about this after the rectifier which is where the PFC boost converter is, and it does in fact boost to around that voltage. The PFC needs to boost at or higher than the amplitude of the AC voltage to work, and 380/400V is so common because it is slightly above the amplitude of 220VAC
Yeah except he got most things wrong, probably because he's trying to remember BS a marketer just told him. I'm an electrical engineer and to me this was the equivalent of that famous Wired "gaming PC build" video we all like to shit on for good reason. Bottom line : you want to be informed, don't go on TH-cam.
Power factor is more the property of the load, like the transformer. It's not like the current and voltage would (or even could) be out of phase, if you only put a resistor as the load.
I don't have epilepsy, but I have a family member who does. That warning was the best I've seen in a long time in videos. The chime directs attention and it was quick to the point. Please include that alert in all those flashy videos, will be a life saver for some people. Also the power supplies look bloody awesome!
Who ever has been running Coolermaster for this run of new products should get a pat on the back... been really impressed... not too say its all perfect... but they pushed for more innovation... and i appreciate that...
In "America" ya ppl Canada is a part of America too! ;) all baseboard heaters carry 220v(Your breaker box has 20AMP breakers installed already for various other things, like stoves/ranges), tap the control box add a junction box, wire and an outlet and your done. 220v is safe for a 120v outlet, 220v uses less amps=less heat ;)
Best PSU walkthrough I have seen from LTT in years. Now, how about more details and actual testing on those 1100w and 1300w units? Especially their noise output.
It was an ok overview of a PSU but it raised more questions than it answered. How are they using mosfets to rectify AC to DC instead of diodes? How are they stepping up the voltage to 400v and why would they if they just need to feed that into a transformer to drop it down to 12v? For that matter, transformers introduce noise as well and in order for the MCU to control it then they'd have to have some kind of flyback diode and probably another pfc circuit after the transformer. It's cool to see, and I know this wasn't meant to be an in depth video, but it seems like a LOT of important stuff was either missed or just glossed over.
@@HelenaOfDetroit they aren't. mechanical engineer guy should stick to mechanical engineering. most of the things he said were wrong. his explanation of power factor was COMPLETELY wrong. and he did is math assuming 380-400V AC which is what you get on 3-phase circuits but none of those power supplies are 3ph. still, the voltage is 1.4142 * Line voltage, or around 311V DC peak for a 220V AC system. (1.4142 is sqrt of 2). single phase outlets are 220 to 240V usually. not 380-400
I have the 1300 watt SFF one like the one in this video for a couple of months now. I am very happy with it. The fan is always on so you do hear it although I have tested the noise out a little bit and it’s very quiet imo I have tested it out a little bit by using the microphone on my phone (pointed towards the pc) with a decibel meter app 50cm away from my PC and the entire pc + of course the ambient noise in the room when either gaming or desktop usage stays around 38/39 db. FYI I have an open case so with my components it’s basically a worst case scenario
I wish they wouldve done a LTT video at Cooler Master. They had some awesome products this year, like the new air cooler and aio for instance. Cooler Master's new sff case was getting a ton of positive vibes from those that like that style. The gpu cooler replacement was pretty interesting as well, hope Steve does a review of it when/if it comes out
As an electrician i will say he got power factor correction wrong. Power factor correction is adding capacitors tp motor loads to bring your power factor close to unity so utilities dont surcharge you. What hes talking about cleaning up dirty power is another thing (hes right in everything but name)
In the UK we can run 3,120 watts off a single 13 amp fused outlet. The wires in the wall can handle 7,680 watts. The whole house could consume 24,000 watts total (100 amp fuse).
I don't know if I'm compensating, hallucinating, or what. But damn do i appreciate the warnings of loud noises and flashes coming up in videos! And I'm not even someone who has to worry about these things!
This detailed review of Cooler Master's engineering prowess was very informative, especially revealing how they manage to make the power supply fanless but efficient. Looking forward to seeing how this product performs once it's out in the market!
Man, I love the idea of a fan header on the PSU, it makes perfect sense to plug your case fans or server fans in there, since A - The fans get powered directly from the PSU, they can be beefy as hell B - The PSU knows EXACTLY how much heat is produced by the system, better than the MB, since it is equivalent to the total Power consumption of the system. I wonder if it becomes a common sight one day
The only inaccuracy in here is the fact that the United States and I'm pretty sure Canada is a 240v split phase, meaning at the Transformer on the pole or pedal stool has three wires coming from it, because we Center tap output side of the Transformer splitting the 240v into 2 wires with 120v and a return wire called the neutral, that's why we have appliances that run on 240v when they use three wires, two wires use the full phase and one is ground, while 120v when they use three wires, One is using half the phase 120v, one is used as neutral the return, one is used as ground.
Power factor correction does not clean up mains power for your supply. If you want to be simplistic, it cleans up the current waveform from your power supply so it doesn't pollute the mains. You have it exactly backwards. In reality, what pfc does is make the current draw of the PSU closer to in-phase with the mains voltage so that
Having just gone sff, sfx psu's need to become the standard for atx form factors. Seriously there's really no need to make full sized atx cases anymore except for actual work machines. Fractal's Meshify C is basically the perfect sized case.
Some people, like myself, like having a full size ATX PC case. It makes assembly wayyyyy easier than in small chassis like sff or those that use itx or matx motherboards. Also gives you significantly more flexibility on part choices. Lastly, it is about as future proof as a case can be....as you don't have to buy another case if new parts don't fit just right inside your sff or sfx case.
@@vongdong10 Honestly hard agree. Matx is technically perfect but no motherboard manufacturer is really seeing that potential. Capture cards arent even needed, hardware encoding on GPUs these days are very good.
So you can still use it at 2800 W in NA, you just have to have a 220 outlet, which most people only have for, AC/Heating , Dryer, and Water heater. But nothing really stops you from installing the needed circuits and outlets, as far as I am aware.
I am pretty sure you can get 240V in NA if you have large homes that have dual Phase 120V circuit in (For heating, etc). Just not directly from your typical wall outlet. So you may want to install NEMA 6-15 in your gaming room for better efficiency.
Pretty amazing what can be done these days as component and mfg prices fall even lower. Synchronous rectification is getting very common nowadays to achieve higher efficiency. I guess the FET transistors are also manufacturered out of GaN wafers instead of traditional silicon. Resulting gains: lower Rds(on) semiconductors to keep it cool. Lower switching losses which enable a higher switching frequency, leading to a more compact transformer. All these enable to market a compact "powerchonker" like this, then reconfiguring it to lower peak power to never heat up too much and avoid ever reaching Tj(max) of semiconductor dies, and bam sell it also for the fanless crowd too. :)
That's a pretty impressive he dissipation system all it needs is a place on the top to lock in a water block so you can siphon the heat off to your radiators
Nice to see high efficiency fanless power supplies heading to the PC market. In industrial, well I just installed a 120 to 12v power supply 1500W fanless and water resistant. Oh, and it was only $400. The fact that its taking so long for that tech to reach the consumer market is unbelievable, and at such a high price.
One slight correction: Most, if not all of Europe is on 220V, not 400V (as you said at 1:10), although when I lived in Germany you can get service with 3 phases of 220V each, and spread the load of the house between them, and get 440V between any two phases, but that's mainly industrial power, and for machinery with big 3 phase motors... not for hair dryers, kitchen appliances or computers, most everything still plugs into 220V outlets. Also, you can make more power efficient devices for 220V.
That's not a correction, they're talking about 3 phase 400-440V which is what that PSU uses No, it's not going to be a drop-in part for everyone in Europe, but it's 2.8kW, it's clearly intended for very very high end workstations not typical gaming rigs
@@audigex You want to bet on it? I went to school in Germany for electrical engineering, and you have no clue what you are talking about, and literally just made that up whole cloth! Exactly where does he say 3 phase, and if so why does it have a standard input, and not the high voltage European industry standard one, so they can actually sell it without being fined up the wazoo? Besides that a server farm will have 3 phase service, possibly even at 220,000V, prior to down transformation which will be in their building, but it has jack all to do with individual devices needing it (none of it does), but total use! You didn't even read or understand the rest of what I wrote, where I clearly point out what it's for: Spreading that power to more outlets as to not over saturate them and blow fuses, or have crap melting and catching fire on failures! No server will have direct 440, because it's not safe, and would require every IT and other personnel to have an additional license (as I have) to get near it, nor does any server need that much power. He says 2800W, so 2800W/220V = just under 12,8A so just higher than the max 10A of a fuse on 110V, and their single outlet is rated at ~20A meaning 220V or two phases at 110V=220V is sufficient up to 4400W, and therefore can be used in the US but you need 3 phase service in the US, not Europe, where you have that in your home already by default! You have all kinds of information at your fingertips and could have looked it up in seconds, but decided just to make some shit up! Even worse: He didn't mean it, he misspoke, because he says 220V later in the video! I made correction so they can edit it and flash a 220V on the screen, after being in trouble already for bad and false information, and loosing a few 100,000 subscribers, maybe more! Besides that, LTT have said it's 220V in more than one video, and so do many tech channels.... it's said all the freaking time, and millions on 110-120V know it too, just not you, because of your ignorance! So maybe you should do more actual learning, and less talking! And when you do learn something then still keep your mouth shut when something is outside of your scope of understanding, because guessing is not a valid method to derive knowledge, and spreading misinformation puts false information in others heads who just take whatever they hear for granted, who then claim to know what they are talking about AKA: The blind leading the blind, or the Dunning Kruger effect when they challenge experts on shit, which is exactly what you are doing!
this was an awesome video, but i really wish you went into some more detail about WHY things have to go up and down like that, but I have little understanding of the way microchips and electronics work.
Thanks for the explanation on how a PSU works internally, super interesting... what I'm wondering though, maybe someone from the community can answer this: Why ramp it up to 380V first, when you need to go down to 12V etc anyways... is this because of the difference in household voltage between US and EU for example, i.e. to standardize these components to work no matter if the wall input gives them 120V or 220V?
Amazing to see the advances in power conversion efficiency from an environmental perspective! Would also be curious to see if the manufacturing process would mean that, over the full product lifecycle, does this product have a lower eco footprint as you'd expect, or are the higher end materials the sort that are expensive because they're difficult (and therefore often dirty or inhuman) to acquire? Genuine question, I think looking at the eco benefits of a good power supply are super important in current year!
fanless only up to 700w? yes, technically what im referring to had a fan, but the seasonic 1000w psu i bought back in 2012 had hybrid mode, and the fan never needed to turn on, so it may as well have been fanless.
Great video and explanation of the efficiency enhancements! Also, I wish overall CPU/GPU efficiency would improve as well, so that over 1000 W power supply would be useful for, say, specialized servers, while for a gaming PC, etc., several hundred watts max should be enough.
How hot does it run under load? All that heat might be fine for this PSU, but it is surely going to mean more work for the fans in the PC? I feel it is a bit like having a higher ambient temperature resulting in air cooling an Intel CPU no longer being enough to prevent throttling.
yep, also PSU noise is the least worry. GPU coilwhine or CPU cooler will always be worse. Like I hear my NHD-15 all the time, I know how it sounds, but never noticed my generic corsair rm 1000 watts...think its that 2021 model.
fun fact you "can" do it in north america, it's just it's own circuit. the way us power works is 240 to the panel with a middle tap for 120. you get 240 by using both rails.
I do believe this is the best coverage I have seen on the channel, seriously! Well done, and thank you so much for explaining these elements for us. And shoutout to Coolermaster, this power supply is next level, as a user of a 700w fanless seasonic, I felt anxiety and confusion over whether I had enough power at 700w wondering if my crashes were from instantaneous power draw or something else. Literally wishing I had some software communication with it to monitor it’s performance for throttling. I can only imagine how different I would feel with this power supply, going from tepid insecurity to strides of confidence at 1100w and the clarity of information with the MCU interface. What a huge difference in imaginary customer experience. Sure the mosfet rectifiers, high temperature bonding, and scorching hot multi layer transformer, and other innovations present multiple early adopter points of failure. But the same is true of everything ever made. Good job everyone! Keep raising that bar!
Google says a typical 15 amp breaker (80%) 1440 Watts continuous output. One of those PSU, Few monitors, dac, speakers, fiber. Home streaming pffice is going to need a second breaker to that room.
Wouldn't the copper heat pipes and aluminium heat sink cause electrolysis? Did they use some kind of de-oxidizing thermal paste? Could also be nickel plated aluminum. Just need a water block to integrate it into a water loop
Trying to understand how theyre going through a rectifier and than stepping it up to 380v , you cant transform DC voltage so something is out of order in this walk through description.
Whats keeping me from plugging a power supply (with some cable work) into an NA 240V "dryer" outlet to get higher power? Or will the NA version not work with that?
5:10 Does it make sense for everything to run on 12V? i would think smaller appliances/peripherals will not have chips that run on 12V and will not have their own voltage regulator because of it's size. (Does your mouse or keyboard need to run on 12V? Does a USB memory stick need to run on 12V? Does a external drive need to run on 12V? Does a webcam need to run on 12V?)
Passive PSUs are cool and all, but i don't think I've ever heard the fan from any of my power supplies. It's the CPU, GPU, and system fans that generate so much noise. So, other than eliminating dust buildup in the PSU, i don't see this as a big deal.
it is really cool seeing tech like this! That said, I’d love to see manufacturers focusing on innovation that brought higher quality PSUs to a more affordable price range. I feel like PSUs are something that (at least anecdotally) haven’t super materially changed in price over the last say 7-8 yrs since I built my first desktop.
The 2800w wouldn't just pull all that wattage, right? You would need the components hooked to it to draw that much. Even a high end desktop system wouldn't even be close to pulling that much
I love this Cooler Master video is sponsored by BeQuiet with basically exactly competing product segements.
Came here to say this
Honestly have no idea how the contract doesn’t cover exact competitors and they didn’t flight the ad units differently since there are so many this week. The headphone ads could have slotted in here. I’d want my money back as a marketer.
@@shahzadpodisn't the headphones one on LTT and be quiet on Short Circuit?
@@shahzadpod Why wouldn't they want to advertise their PC cooling products to an audience watching a video about PC cooling?
BeQuiet should ask for a refund
I love seeing actual practical innovation. That passive psu looks insane!
Ditto, I'm actually mostly checked out of the modern tech industry, but this was actually cool to see.
The explanation for the power factor correction has an error in it. PFC isn't to correct the power coming from the wall but correcting the way the PSU draws Power from the wall. PFC ist used so that a device will draw power from the grid in a way that's similar to a resistive Load. The PSU doesn't care abot feeding electrical noise back to the grid or drawing current out of phase but the grid does.
Yeah pointed also out, that the pfc is after the bridge and is responsible for the 380V.
Yup, PFC is done to to keep the balance of active and reactive power in the grid. Domestic consumers don't get charged for absorbing reactive power, so all consumer appliances strive to keep pf close to 1.
Yeah, what he said was a bunch of made up nonsense.
The confusion with copper/inductor and switching losses too. Higher switching frequency results in higher switching losses, but reduces the required inductor/transformer size.
1100W on a SFF power supply? That’s pretty impressive
Not when you consider most ITX/sff cases are completely unable to eject 1100 watts of heat energy.
debatable@@XiaOmegaX
@@XiaOmegaXThere are definitely some cases where you have an SFX shroud, but the rest of the space is relatively large. Also, it's perfect for weird projects (such as external water cooling), and will become very relevant when the rest of the components catch up to these demands.
And even if you're not using the full 1100/1300W, you will achieve greater efficiency with running this at, say, 500W, when compared to a 700W PSU outputting 500W.
@@XiaOmegaX having 1.1mW and eject it all the time is two different things. You can put a 13600K and 4070 in itx Case, and it's still at best emitting 400W. that's why the sfx psus are now at maximum 850W.
I have the SFF one with 1300 watts from cooler master like in the one from this video. I am super happy with it
Kinda crazy to think of that 2800w PSU, at 90% efficiency would be still be losing 200W+ in heat
yeah. well.. under full load (basically never happens). but still, you'd have to configured it that way for edge cases
Then again, half of Europe is pretty damn cold right now 🥶
@@DenKulesteSomFinswhich you shouldn't fix with electric heating...
@@homeape. Nope, burning oil instead.
@@homeape. tell that to the americans that blow up gas pipes in northern europe.
Love the the new information boxes that appear throughout the video.
Can shift to LTT too.
Seizure warnings are too annoying though
@@laden6675 yeah. Those are too big and eye grabbing for most people.
But needed even if there are couple of viewers with the condition i guess.
You know what's also too annoying? Seizures. @@laden6675
@@laden6675yeah the first warning buzz sounds exactly like the critical error buzz my PC can make if it seriously crashes. I was worried and my heart skipped a beat even though I'm on mobile lmao
@@laden6675the beep gave me a heart attack
My favorite parts… were the coils embedded in the heatsinks, the usb interface, and the load responsive fan header. I absolutely love the idea of the power supply dynamically controlling cooling of the entire system through a gargantuan case fan.
A little disappointed at the errors/misrepresentations I noticed in this vid, hopefully you guys can improve in the future. Don’t dive into technicals if you aren’t sure what you are talking about!
2:30 “Where dirty wall power needs to be cleaned up by power factor correction”. This is wrong, this is not the PFC stage and does not correct power factor at all. This is just the input filter. Also, poor PF is not caused by noise, it is caused by the rectifier. The actual PFC stage is at 3:15
2:45 “Medium/high flux choke” is a term with no meaning. Perhaps that means they used a choke with a higher value inductance, but that doesn’t necessarily make it any more efficient, higher performing, or expensive. What does make it very expensive is the giant heat sink around tho.
3:15 “Next we want to stop up the voltage to 380V” This is the actual power factor correction stage, which works by boosting the voltage coming out of the rectifier. Also when talking about single/double “rail”, I’m pretty sure you mean phases not rails.
4:20 “A lot of switching losses are in transformer” That is not true, all switching losses by definition occur in the switching elements (mosfets). Loss in transformers comprise of core, eddy current, conductance, hysteresis, etc losses. Even when talking about losses in general, for a typical power supply, most of the losses are not in the transformer but indeed switching losses from the fets. However, given that this power supply is not typical, it’s probably using a soft switching topology that significantly reduces switching losses.
4:35 “Typically after transformer it’s analog but this uses MCU to convert to digital and send it out through PMBUS” This makes zero sense, I have no idea what you are talking about. The output of the transformer is your 12V power, you don’t really describe that as an analog or digital “signal”. If I had to take a wild guess, maybe you are referring to the fact that this PSU uses a digital control loop rather than an analog one? Or maybe you just wanted to mention that PMBUS out is a feature, in which case fair enough but the "normally after transformer it's analog but this is digital" still makes no sense.
Cool power supply nonetheless!
I've only played it for a bit but pmbus is mostly used for telemetry used by server mb and psu and vrm of lots of consumer products, i think it can also be used to monitor 'live' power consumption but i don't know if all psu support that or only the one that i happen to use that time
by 380V he was talking about the usual 3-phase voltage. he got so many facts mixed up.
@@drgenio2006 No I'm almost certain he is talking about the output of the PFC stage which is nearly exclusively 380/400V. He is talking about this after the rectifier which is where the PFC boost converter is, and it does in fact boost to around that voltage. The PFC needs to boost at or higher than the amplitude of the AC voltage to work, and 380/400V is so common because it is slightly above the amplitude of 220VAC
@@drgenio2006 no he wasn't, don't talk about stuff you are clueless about
I love when Alex gets to deep dive into the construction and theory behind electronics. Very informative and fun to watch!
Yeah except he got most things wrong, probably because he's trying to remember BS a marketer just told him. I'm an electrical engineer and to me this was the equivalent of that famous Wired "gaming PC build" video we all like to shit on for good reason. Bottom line : you want to be informed, don't go on TH-cam.
I love the explanation why it's so efficient and how it works! Please give me more of that! I love geeking.
Power factor is more the property of the load, like the transformer. It's not like the current and voltage would (or even could) be out of phase, if you only put a resistor as the load.
I don't have epilepsy, but I have a family member who does. That warning was the best I've seen in a long time in videos. The chime directs attention and it was quick to the point. Please include that alert in all those flashy videos, will be a life saver for some people.
Also the power supplies look bloody awesome!
I love LMG for having actually good seizure/flash warnings. Makes me enjoy their videos even more.
Who ever has been running Coolermaster for this run of new products should get a pat on the back... been really impressed... not too say its all perfect... but they pushed for more innovation... and i appreciate that...
In "America" ya ppl Canada is a part of America too! ;) all baseboard heaters carry 220v(Your breaker box has 20AMP breakers installed already for various other things, like stoves/ranges), tap the control box add a junction box, wire and an outlet and your done. 220v is safe for a 120v outlet, 220v uses less amps=less heat ;)
This was the best shortcircuit video in a while!
It could be better if he talked about the second sfx PSU, he said he didn't want to be too nerdy, but common, this isn't a news channel!
Best PSU walkthrough I have seen from LTT in years. Now, how about more details and actual testing on those 1100w and 1300w units? Especially their noise output.
It was an ok overview of a PSU but it raised more questions than it answered. How are they using mosfets to rectify AC to DC instead of diodes? How are they stepping up the voltage to 400v and why would they if they just need to feed that into a transformer to drop it down to 12v? For that matter, transformers introduce noise as well and in order for the MCU to control it then they'd have to have some kind of flyback diode and probably another pfc circuit after the transformer. It's cool to see, and I know this wasn't meant to be an in depth video, but it seems like a LOT of important stuff was either missed or just glossed over.
@@HelenaOfDetroit those a very good questions, hopefully someone will cover these aspects in the near future 👍
@@HelenaOfDetroit they aren't. mechanical engineer guy should stick to mechanical engineering. most of the things he said were wrong. his explanation of power factor was COMPLETELY wrong. and he did is math assuming 380-400V AC which is what you get on 3-phase circuits but none of those power supplies are 3ph. still, the voltage is 1.4142 * Line voltage, or around 311V DC peak for a 220V AC system. (1.4142 is sqrt of 2). single phase outlets are 220 to 240V usually. not 380-400
I have the 1300 watt SFF one like the one in this video for a couple of months now. I am very happy with it. The fan is always on so you do hear it although I have tested the noise out a little bit and it’s very quiet imo
I have tested it out a little bit by using the microphone on my phone (pointed towards the pc) with a decibel meter app 50cm away from my PC and the entire pc + of course the ambient noise in the room when either gaming or desktop usage stays around 38/39 db.
FYI I have an open case so with my components it’s basically a worst case scenario
@@drgenio2006 Nope, you are wrong. Why are you commenting on stuff you don't know?
I love the idea of putting a CPU cooler inside a power supply. It's both hilarious and genius.
What CPU cool? You mean heat pipes?
I wish they wouldve done a LTT video at Cooler Master. They had some awesome products this year, like the new air cooler and aio for instance. Cooler Master's new sff case was getting a ton of positive vibes from those that like that style. The gpu cooler replacement was pretty interesting as well, hope Steve does a review of it when/if it comes out
As an electrician i will say he got power factor correction wrong. Power factor correction is adding capacitors tp motor loads to bring your power factor close to unity so utilities dont surcharge you. What hes talking about cleaning up dirty power is another thing (hes right in everything but name)
4:00 Thank you for the ding 🛎️ 😊 excellent job LTT team
In the UK we can run 3,120 watts off a single 13 amp fused outlet. The wires in the wall can handle 7,680 watts. The whole house could consume 24,000 watts total (100 amp fuse).
I don't know if I'm compensating, hallucinating, or what. But damn do i appreciate the warnings of loud noises and flashes coming up in videos! And I'm not even someone who has to worry about these things!
This detailed review of Cooler Master's engineering prowess was very informative, especially revealing how they manage to make the power supply fanless but efficient. Looking forward to seeing how this product performs once it's out in the market!
Man, I love the idea of a fan header on the PSU, it makes perfect sense to plug your case fans or server fans in there, since
A - The fans get powered directly from the PSU, they can be beefy as hell
B - The PSU knows EXACTLY how much heat is produced by the system, better than the MB, since it is equivalent to the total Power consumption of the system.
I wonder if it becomes a common sight one day
Love the deep dive in short circuit :P
Finally Cooler Master got some interesting PSU's again.
The only inaccuracy in here is the fact that the United States and I'm pretty sure Canada is a 240v split phase, meaning at the Transformer on the pole or pedal stool has three wires coming from it, because we Center tap output side of the Transformer splitting the 240v into 2 wires with 120v and a return wire called the neutral, that's why we have appliances that run on 240v when they use three wires, two wires use the full phase and one is ground, while 120v when they use three wires, One is using half the phase 120v, one is used as neutral the return, one is used as ground.
Power factor correction does not clean up mains power for your supply. If you want to be simplistic, it cleans up the current waveform from your power supply so it doesn't pollute the mains. You have it exactly backwards.
In reality, what pfc does is make the current draw of the PSU closer to in-phase with the mains voltage so that
the "imaginary" component of the power is reduced, which saves real power in the rest of the power system.
The SFX where launched last year, i got the v1300 sfx on february 2023... and man, the fan is freaking LOUD (and is always running...).
Having just gone sff, sfx psu's need to become the standard for atx form factors. Seriously there's really no need to make full sized atx cases anymore except for actual work machines. Fractal's Meshify C is basically the perfect sized case.
Yeah let's hope
SFF is perfect for gaming rigs these days. For workstation folks ATX motherboards do tend to have a lot more features though.
@triliner254 matx should start being the norm imo. Only need a gpu and a capture card for people wanting to stream these days
Some people, like myself, like having a full size ATX PC case. It makes assembly wayyyyy easier than in small chassis like sff or those that use itx or matx motherboards. Also gives you significantly more flexibility on part choices. Lastly, it is about as future proof as a case can be....as you don't have to buy another case if new parts don't fit just right inside your sff or sfx case.
@@vongdong10 Honestly hard agree. Matx is technically perfect but no motherboard manufacturer is really seeing that potential. Capture cards arent even needed, hardware encoding on GPUs these days are very good.
I feel you Alex . Have a wonderful day too. Hope you recover well from all the ces videos :D
Epic power supplies! Love seeing such high quality components.
So you can still use it at 2800 W in NA, you just have to have a 220 outlet, which most people only have for, AC/Heating , Dryer, and Water heater. But nothing really stops you from installing the needed circuits and outlets, as far as I am aware.
It's so amazing to see all the new cooler master inventions they seem like a great company and that is why I will use them for my next PC build.
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@@markminch1906 hello fellow human
Love the Edison Motors cap!
More than that, though, I love how efficient they've gotten these PSUs!
I am pretty sure you can get 240V in NA if you have large homes that have dual Phase 120V circuit in (For heating, etc). Just not directly from your typical wall outlet.
So you may want to install NEMA 6-15 in your gaming room for better efficiency.
Love the flashing light warning, maybe make a trigger sound at the beginning AND END though
Pretty amazing what can be done these days as component and mfg prices fall even lower. Synchronous rectification is getting very common nowadays to achieve higher efficiency. I guess the FET transistors are also manufacturered out of GaN wafers instead of traditional silicon. Resulting gains: lower Rds(on) semiconductors to keep it cool. Lower switching losses which enable a higher switching frequency, leading to a more compact transformer. All these enable to market a compact "powerchonker" like this, then reconfiguring it to lower peak power to never heat up too much and avoid ever reaching Tj(max) of semiconductor dies, and bam sell it also for the fanless crowd too. :)
Homes gonna need 220v outlets in the NA region soon for PCs. I already did it for my server room.
dedicated 240v outlet for just your pc would be a mega flex...I need to do it.
Flexxing hard over here
just unplug something like a dryer or something, and bam, you're good.
Even our standard 240v 10A sockets in AU won’t support a 2800W PSU. Would need a dedicated 15A socket.
@@ad_fletchWell 16A is pretty normal for a bedroom to have for example. 10A is like the bare minimum and you can just switch it to a 16A one.
That's a pretty impressive he dissipation system all it needs is a place on the top to lock in a water block so you can siphon the heat off to your radiators
Nice to see high efficiency fanless power supplies heading to the PC market. In industrial, well I just installed a 120 to 12v power supply 1500W fanless and water resistant. Oh, and it was only $400. The fact that its taking so long for that tech to reach the consumer market is unbelievable, and at such a high price.
I'm confused wasn't murica 220v to the house but 110 to the plug?
Thus 220 is available?
Yup! You’re correct! This is, in fact, stupid and confusing!
One slight correction: Most, if not all of Europe is on 220V, not 400V (as you said at 1:10), although when I lived in Germany you can get service with 3 phases of 220V each, and spread the load of the house between them, and get 440V between any two phases, but that's mainly industrial power, and for machinery with big 3 phase motors... not for hair dryers, kitchen appliances or computers, most everything still plugs into 220V outlets. Also, you can make more power efficient devices for 220V.
That's not a correction, they're talking about 3 phase 400-440V which is what that PSU uses
No, it's not going to be a drop-in part for everyone in Europe, but it's 2.8kW, it's clearly intended for very very high end workstations not typical gaming rigs
@@audigex You want to bet on it?
I went to school in Germany for electrical engineering, and you have no clue what you are talking about, and literally just made that up whole cloth! Exactly where does he say 3 phase, and if so why does it have a standard input, and not the high voltage European industry standard one, so they can actually sell it without being fined up the wazoo? Besides that a server farm will have 3 phase service, possibly even at 220,000V, prior to down transformation which will be in their building, but it has jack all to do with individual devices needing it (none of it does), but total use! You didn't even read or understand the rest of what I wrote, where I clearly point out what it's for: Spreading that power to more outlets as to not over saturate them and blow fuses, or have crap melting and catching fire on failures! No server will have direct 440, because it's not safe, and would require every IT and other personnel to have an additional license (as I have) to get near it, nor does any server need that much power. He says 2800W, so 2800W/220V = just under 12,8A so just higher than the max 10A of a fuse on 110V, and their single outlet is rated at ~20A meaning 220V or two phases at 110V=220V is sufficient up to 4400W, and therefore can be used in the US but you need 3 phase service in the US, not Europe, where you have that in your home already by default!
You have all kinds of information at your fingertips and could have looked it up in seconds, but decided just to make some shit up! Even worse: He didn't mean it, he misspoke, because he says 220V later in the video! I made correction so they can edit it and flash a 220V on the screen, after being in trouble already for bad and false information, and loosing a few 100,000 subscribers, maybe more!
Besides that, LTT have said it's 220V in more than one video, and so do many tech channels.... it's said all the freaking time, and millions on 110-120V know it too, just not you, because of your ignorance! So maybe you should do more actual learning, and less talking! And when you do learn something then still keep your mouth shut when something is outside of your scope of understanding, because guessing is not a valid method to derive knowledge, and spreading misinformation puts false information in others heads who just take whatever they hear for granted, who then claim to know what they are talking about AKA: The blind leading the blind, or the Dunning Kruger effect when they challenge experts on shit, which is exactly what you are doing!
Where's the sponsor disclaimer at the beginning? >_>
This is amazing! It's almost like having the old Turbo Nerd Alerts back!
2024 is the year I finish my pc build. 1,000 watt SFX PSU!? I've been waiting for these.
"Oh that looks really cool, a silent psu sounds awesome I might get that"
"It's expected to cost between $650 - $700"
"Nevermind!"
this was an awesome video, but i really wish you went into some more detail about WHY things have to go up and down like that, but I have little understanding of the way microchips and electronics work.
Been quite a while since any LTT content interested me but this was well done and informative.
Thanks for the explanation on how a PSU works internally, super interesting... what I'm wondering though, maybe someone from the community can answer this:
Why ramp it up to 380V first, when you need to go down to 12V etc anyways... is this because of the difference in household voltage between US and EU for example, i.e. to standardize these components to work no matter if the wall input gives them 120V or 220V?
No wonder this is so powerful when it has the whole MCU inside.
Amazing to see the advances in power conversion efficiency from an environmental perspective! Would also be curious to see if the manufacturing process would mean that, over the full product lifecycle, does this product have a lower eco footprint as you'd expect, or are the higher end materials the sort that are expensive because they're difficult (and therefore often dirty or inhuman) to acquire? Genuine question, I think looking at the eco benefits of a good power supply are super important in current year!
Love the littel tooltips in the corner!
I really love a good example of engineering quality like this, when they have actually taken the time to make it as good as it can be.
fanless only up to 700w? yes, technically what im referring to had a fan, but the seasonic 1000w psu i bought back in 2012 had hybrid mode, and the fan never needed to turn on, so it may as well have been fanless.
My Seasonic 850W GX-850 can run fanless only until 30% load
Thanks for the sponsored video BeQuiet, I'll be sure my next PSU is from Coolermaster.
I hope this will continue in their SFF line.
YOOOOO THE EDISON MOTORS CAP IS AWESOME!!! LOVE THEM GUYS!!!
that fan header would be so useful for openloop watercooling
wow I haven't associated cooler master with the cutting edge like this for a long time, very exciting products
Great video and explanation of the efficiency enhancements! Also, I wish overall CPU/GPU efficiency would improve as well, so that over 1000 W power supply would be useful for, say, specialized servers, while for a gaming PC, etc., several hundred watts max should be enough.
Best stuff I’ve seen from CES so far
How hot does it run under load?
All that heat might be fine for this PSU, but it is surely going to mean more work for the fans in the PC?
I feel it is a bit like having a higher ambient temperature resulting in air cooling an Intel CPU no longer being enough to prevent throttling.
yep, also PSU noise is the least worry. GPU coilwhine or CPU cooler will always be worse. Like I hear my NHD-15 all the time, I know how it sounds, but never noticed my generic corsair rm 1000 watts...think its that 2021 model.
fun fact you "can" do it in north america, it's just it's own circuit. the way us power works is 240 to the panel with a middle tap for 120. you get 240 by using both rails.
Nice, looks superb build quality. But does it beat the Corsair AX1600i?
I do believe this is the best coverage I have seen on the channel, seriously! Well done, and thank you so much for explaining these elements for us. And shoutout to Coolermaster, this power supply is next level, as a user of a 700w fanless seasonic, I felt anxiety and confusion over whether I had enough power at 700w wondering if my crashes were from instantaneous power draw or something else. Literally wishing I had some software communication with it to monitor it’s performance for throttling.
I can only imagine how different I would feel with this power supply, going from tepid insecurity to strides of confidence at 1100w and the clarity of information with the MCU interface. What a huge difference in imaginary customer experience. Sure the mosfet rectifiers, high temperature bonding, and scorching hot multi layer transformer, and other innovations present multiple early adopter points of failure. But the same is true of everything ever made. Good job everyone! Keep raising that bar!
But we still have 240V in the US…. Maybe not wired to a standard outlet for a PC, but not difficult to do so
Google says a typical 15 amp breaker (80%) 1440 Watts continuous output. One of those PSU, Few monitors, dac, speakers, fiber. Home streaming pffice is going to need a second breaker to that room.
I missed most of my electronics classes about PSUs but damn, was that pretty well explained.
Wouldn't the copper heat pipes and aluminium heat sink cause electrolysis? Did they use some kind of de-oxidizing thermal paste? Could also be nickel plated aluminum. Just need a water block to integrate it into a water loop
Very neat. Super interesting stuff, thanks for the video!
love the edison hat!
Trying to understand how theyre going through a rectifier and than stepping it up to 380v , you cant transform DC voltage so something is out of order in this walk through description.
You're right, much of it was simply false or it's in there but in a different area (and/or for a different reason than explained)...
Whats keeping me from plugging a power supply (with some cable work) into an NA 240V "dryer" outlet to get higher power? Or will the NA version not work with that?
Power supply tech improvement are actually super cool and glad many components these days are not as stagnant as gpus
3:18
Are bridges diodes made out of BJT?
Are the mosfet not configured like the bridge diode?
Alex whispering at us again. I'm here for it. Those power supplies are louder than him.
5:10
Does it make sense for everything to run on 12V?
i would think smaller appliances/peripherals will not have chips that run on 12V and will not have their own voltage regulator because of it's size.
(Does your mouse or keyboard need to run on 12V? Does a USB memory stick need to run on 12V? Does a external drive need to run on 12V? Does a webcam need to run on 12V?)
Passive PSUs are cool and all, but i don't think I've ever heard the fan from any of my power supplies. It's the CPU, GPU, and system fans that generate so much noise. So, other than eliminating dust buildup in the PSU, i don't see this as a big deal.
I'm surprised it's "only" platinum efficiency, the Seasonic fanless ones are Titanium rated
3:27
"fewer" switching losses
Alright seasonic, we would like a competitor to this please.
Curious, why don't people in the US run 240v lines for high power computers? We have them for dryers and ovens already.
in residential areas you won't get charged more for bad power factor, so the inefficiency is not really reflected on your electricity bill
2800w....isn't the only use case for that would be an LLM build? That fanless is beautiful.
that's pretty nuts honestly
“Completely silently. Completely fanlessly” 😝
1100 watt fanless power supply?? They've done it! We're finally there!!
Edit: $650?? Okay, forget it.
it is really cool seeing tech like this! That said, I’d love to see manufacturers focusing on innovation that brought higher quality PSUs to a more affordable price range. I feel like PSUs are something that (at least anecdotally) haven’t super materially changed in price over the last say 7-8 yrs since I built my first desktop.
400V down to 12v ? Do PS up the voltage just to lower it?
currently using a 850sfx from cooler master running a rtx 3090 and 13900k. No problems so far. Have had it for a year
Wow some innovation in PSU, and it comes from Cooler Master, I didn't see that coming :)
that beQuiet fan wall bangs.
Does the new PS dump heat into the case? Wouldn't a fan blow that heat out of the case?
Looks like Cooler Master really wants to provide the highest quality psu on the market. Anybody remember when they made their $1200 Made in Japan PSU!
what if you add a fan anyways and let it operate around 100rpm. it still be dead silent and just extra cooling for safety
I dig the Edson hat.
That seems really nice but it's a 3rd of what I spent on PCs in the past. But less noise would be nice too.
The 2800w wouldn't just pull all that wattage, right? You would need the components hooked to it to draw that much. Even a high end desktop system wouldn't even be close to pulling that much