Computer Case Airflow - What is Positive and Negative Pressure?
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- เผยแพร่เมื่อ 27 มิ.ย. 2024
- Ever wonder what positive and negative air pressure in your case means? Well, Anthony and Jack came up with a way to show you exactly what happens inside.
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Episode Credits:
Host: Jack Sui (@NCIXJack), Anthony Chow (@Thegreatchow)
Writer: Jack Sui, Anthony Chow
Editor: Kalvin Shum (@NCIXAce) - วิทยาศาสตร์และเทคโนโลยี
Sorry . what was you saying? I was too busy looking at the glowing rams.
+Kimsea Chea Yep, looks like Avexir Core RAM. Good stuff.
"rams" lmao no hate just sounds funny
+Kimsea Chea It's already plural! You wouldn't say "chineses"... - Tropic Thunder quote.
+Kimsea Chea Kinda Same Here :p
LOL same here.
Super informative video. The only missed opportunity is when you said a fan blows towards the hub, an on-screen picture might have been helpful for some viewers.
Preach
I agree... I'm a computer guy, and I was like, WTF is a hub???
Hub means center.
north wiebesick has nothing to do with IT. It’s English. Hub means center..
@@brandonh.6654 is it just me, or do you not get the original comment??? We all know that fans do not blow towards the center, per sé, as what he was referring to 1 side of the fan being the hub...meaning, that if you had the hub facing one direction, it would pull air in, and facing the other way, pushing it out... My comment was based on the fact that if hub means center or middle, in common tounge, then is he talking center of the blades on the central column, or the center of the framework on the one side that the fan is usually screwed or glued to...
2016 "Wow that RAM is flashing"
2020 "Need MoRe RgB!!"
MOAAAAAAAAAR MOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAR!!!!!!!!!!!!!!
@@dhanajon5528 I REALLY LKE THIS SOUND 0:28 AND THE END VIDEO NOISE
@@TH-camTookMyNickname.WhyNot Name checks out
2025 - No RGB or Transparent window.
It's easy to go with the trend but Legends follow the best inner intuition. :)
@@clearevidence1596 totally agreed with you, no RGB and no transparent window are way cheaper and in the most cases they are better
If your PC looks like 1:50 without a fog machine your doing it horribly wrong...
+Fallexn *youre at least you tried
+Andrew Lange *_it's "your" tbh, because it's common knowledge_*
+Andrew Lange *_lol, you're stupid_*
+kαиєki kυи take a joke i know its your and tbh i dont really care sooooo
*_lol, you're still stupid_*
Need more down force, add a spoiler.
But but... the suspensions are too stiff!
Willian Peng and the idea of a racecar pc is born. with spoiler, racing stripes, carbon fiber and a cooler master V8 cooler.
givemeajackson Riceing cars and now PC'S?
KayNineLP yep. Needs to be the slowest pc you can find though.
givemeajackson Hahaha same applies
Just realized a few days ago after watching this, my rear exhaust fan airflow was the wrong way. This was my first build only a few weeks old, so no damage luckily. Temp went down 5 degrees since then. Aw well I'm a noob.
@TH-cam Commentator You must be the dick in the family. Power is strong in you.
Thanks for the video. Very helpful. Got a better understanding on how to configure my fan set up
I have a corsair air 540 and I'd be very interested to see airflow comparisons regarding the top fans (intake as opposed to exhaust). Love the idea of airflow testing for videos. Keep up the good work.
Instructions unclear, added fog machine to RGB setup, neighbors thought I was hosting a rave, cops were called, commenting from holding cells.
thank you for easy understanding now I must fix my airflow
i not understand exactly
i know airflow in front better
but what about rear and top ?
case nzxt s340 elite
SoLo Mid im thinking about rear and top aswell
I have 4 intake (front, top), 1 out (rear)
@@nindajuka8427 that would be so noise. Lmao
@@kyookyooo546 1200 rpm isnt that loud
Really good and clear demonstration of air flow. Nice
Really like the visual with the fog machine!
Explanation wasn't clear enough, ended up getting circumcised by one of the fans.
At least you didn't get castrated
@@che7655 Yeah, only genitally mutilated...
@@haydn-db8z shut up
@@trigger8221 Truth hurts.
@@trigger8221 Triggered ;-)
...is that ram flashing?... that's amazing
+Tallen Smith Yea i know its look awesome ! =D
+MicroVoortex whats the model or is it a kit?
+Titanclaw 24 I dont really know the exact model, but a similar RAM is the Avexir Raiden
+Creamy Z i think youre right
+Titanclaw 24 They are called Corsair Dominator Platinum
That was informative! Thanks!
Nice vid!! Would have been nice if you guys tested temps under idle, gaming, benchmarks & OC using various air pressure.
Fractal define R5 please
Yes please!
David H or 4 since prob most people still have that including myself :)
crazyjd64 both they both have small intakes
David H its like *beats by dre* looks nice, but it's shit. Why you ask?Oh dear sir, have you ever considered that YOU NEED MORE INTAKES AND OUT TAKES. The R5 covers up way too much to present itself, and so it makes air cooling very... well shit. For max airflow I went with the x preditor.
armoureddanger the case is meant for silent
Normally I'm worried when I see smoke coming out of a pc case
My corsair 540 air case has great cooling with no cables in the way. Its hands down the best air flow case I've owned. Plus I'm a big fan of corsairs wire management.
Finley an explanation of Positive and Negative air flow in a case, even though it is a bite simplistic it works. I like it allot.
Aiflow test for Fractal Desgins Define R5!
Wow, thanks, now I realised that I was actually buylding an air frier since all my fans were blowing inside, keeping the air from flowing.
holy shit, all those years looking for arrows and I just now learn the flow goes towards the cage.
Best airflow vid. All the ones I watched before so far was confusing.
like to see the Phanteks Enthoo Primo SE air flow.
Corsair Air 540 Please. That would be awesome
Such a nice and informative video.
thnks man this is the most informative cpu airflow video here
ThermalTake Core X9 using the supplied (or user supplied) 200 mm fan in the front.
+Brechan Fraser Yeah this.
can you do a negative pressure set up with filtered intakes and exhaust so there will be minimal dust ? because he only mention it with out filters
***** Rather have thermalthief than Caserapeyourwalletlabs.
***** Rudeguy - Sandhurricane
+Tj Darude - Sandstorm
Could you please review the airflow of the Fractal Design Define R5.
My CPU temps seem to get pretty high and I don't know if it's because of my CPU Cooler, or that the intake of the case is being a bit restricted
RigorGames I have a similar problem with my Define R4. I think the front of the case is way too restrictive.
I have no problems with my cpu temps and im also using a define R5. But then again, im using a 120mm liquid cooler so that might be a big difference compared to your system.
Alexander Folkesson i dont know why my i7 gets so hot on my ibm a50 case and i have a cooler that came with the cpu. (You cant see the sarcasm)
grab the cutters and make some more openings...?
Im sorry, but reviews don't work this way. People are not going to review a product on a certain aspect because someone in the TH-cam comments said he or she had a problem with it!
Thanks for this vid. Will make some adjustments on my 1st build. I have 3 intake fans in the front.. 2 intake on top and 1 exhaust at the back. I will change the 2 top fans to exhaust. Thanks again!
Excellent video.
Both systems will very quickly reach a steady state where there is just as much air flowing into the case as is flowing out. Higher pressure inside means more air molecules to carry heat away. Less dust will depend on having filters at air ingress points--you usually have an easier time filtering a positive pressure system.
"Higher pressure inside means more air molecules to carry heat away"
That is not how this works. That effect is so tiny it might as well be non-existent.
show the best setup for the fractal r5 with an aio nzxt kraken x61 installed, i'm going to buy this and set up first computer soon. Is best to put the aio on the top of the case and keep the top vents open, or if you it in the front so that you can close the top to keep it quieter will the system overheat?
i have the r4 define. it is housing my 3rd build using that case (good brand and case design, last me all those builds/years). Currently I have dual 140 in on the filtered front and a single 120 in on the filtered bottom (near the front). the only fan i have that goes out is in the back. the rear fan btw isn't even a case fan, it is the fan/rad combo from water cooled fury X gpu. instead of mounting it on top i left the top closed and replaced the single rear fan with it's rad. max gaming the gpu will spin to about 1/3 speed and run 60C (& that's with it pulling the already warm air from inside the case) so thier is no need at all to open the top vents up at all unless you were using a custom loop that had separate rads for the cpu and gpu.
Awesome review! Thanks.
i made a list of parts im going to be using to build my first pc a couple months ago, i just found this video today, and i have hte same case listed, so its cool to get to see the airflow my computer will have
Can you do the airflow test on the NZXT S340?
Plz yes
It doesn't have the best airflow as per reviews...I'm getting the case though, going to have 2 sucking in and 2 blowing out.
Targaryen Gaming ( ͡° ͜ʖ ͡°)
Also airflow is really good, even with the plastic cover on. It doesnt block because of how large the top and bottom gaps are
Time to buy FOG machine!!!
I tested mine using a vape. xD
Hah
i did that same lol
fog is water
prob not a good idea
Lol? what a reply
I wasn't even talking to you
Really simple explanation. Thanks
Thank you soo much for this video! I didn't really thought about airflow in my computer, until I saw your video and....oh, that's why my PC is getting so hot...
Bought 2 fans and installed them like you reccomended and boom, he's cool now. :D
Please show me Fractal Define R5
Why not put the pc in space so no fans will be needed at all
pc parts will fly
you just use the connectors to hang it together
+Boffifis1 it will be worse
The Heat couldn't get out because there is no air to "carry" it
it's too cold/hot for the electronics..
Excellent. Good advice.
thanks for this, very helpful
Neutral air pressure ftw.
2:37 my pc...
Awesome vid! Probably the best I've seen here at illustrating these principles. I've never seen any of them using a fog machine, so that was a nice touch. HERE is what I want: I just ordered a Corsair Crystal Series 570X RGB. Seeing as it's literally ALL glass sides and top, this would look cool af for the fog machine (with snazzy RGB fans so you can turn the lights off for da smoke)! So do a Shia and DO IT! :)
Great video; subscribed because of this.
you remind me of jerry from the walking dead :D
What if you have your exhaust fans spinning slower than your intake fans, especially when you have more exhaust fans than intake fans? What would that cause as far as dust and thermals goes?
Spinning speed (AKA RPM) is almost irrelevant. Airflow of the fans is what matters, so it depends on the fans. Number of intake/exhaust fans would also be required to answer this. If the exhaust are stock fans which came with the case and only flow 30CFM, but the intake fans are good aftermarket fans which flow 50-90CFM each... So anybody who could help you would need more info than what you stated. I'm guessing you think you have 3 exhaust & 2 intake? 1 rear exhaust & 2 top? Are the 2 intake both at the front? Do you also have a side intake, or are you using the side as your 3rd exhaust (supposed to be an intake to directly help cool your GPU, by the way)? Also, what is your goal? This video perfectly proved what I have told people for years. If you want better cooling, you want a negative pressure. If you want to clean your PC less frequently by keeping dust out better, then you want positive pressure. So which would you prefer? I'm guessing you want positive pressure, based on your question. So if you are using your side intake fan as an exhaust fan, make it an intake fan. Anything beyond that will require the info I said above.
I guess my question was rather simple in comparison to specific situations, but yeah, that was mainly the question was if you had more fans pushing out less air than the fewer fans pushing in more air, what would the result be?
If you have to probe me about what my situation is, my computer is set up so I have two 140mm fans on the front (the bottom is a SP fan where the hard drive cage is) as intake fans, three 140mm fans on top acting as exhaust (though I intend them to not spin as fast, therefore not always blowing out so much air), a rear 120mm fan as an obvious exhaust, and another 120mm fan on the bottom acting as an intake fan, so it sort of implements convectional cooling. All of these are Corsair case fans, and all but the latter SP fan I mentioned just for the hard drive cage are air flow case fans, all plugged into a manual fan controller; there are seven case fans in total, and one out of the seven is a static pressure fan. I use the fan controller so I can independently control all of the case fans, which a few are being controlled in pairs by fan splitter cables I also bought in conjunction with it, so the front intake, the first two on the top, and then the last two from top to rear are independently controlled in pairs, whereas the bottom intake fan is the only one that is actually independently controlled by the fan controller, possibly giving all the power in one cable vs. a splitter cable, which the bottom one would be louder than the last pair of fans (rear top and rear exhaust).
For case reference: I am using a Thermaltake Core V41 ATX Mid-tower case. (Ironically, it is very tall and wide for a typical Mid-tower case, primarily designed to be very liquid cooling friendly.)
What would _you_ say on the matter, with all of that being said?
Sounds like you are shooting for positive pressure the hard way, it doesn't have to be that complicated. I would of opted for just keeping one more intake fan than exhaust. I also always scrap stock fans and go for nice SP fans to simplify things.
Throwback vid. I used to own this case, even bought it from NCIX.
this is really cool to watch tbh
You do not have any slot covers! do that test again!
+Joeteck I noticed that too. Seriously guys?
I was thinking about that too... but the GPU could push out of those gigantic holes or maybe under the PSU if you have some holes somewhere there...
Corsair 450D
+Philip Vinterberg its not
Great job!
My favorite vid for airflow
So this guy I know went up to the most beautiful babe in this bar and said, "Girl, you're so hot, I just want to strap a Corsair H100i to you with a couple of Noctua NF-F12 replacement fans." She looked at him puzzled and then threw a glass of ice water in his face.
Why recommending this on 1/1/2020?
Keith Marcus lmao same
the information is still as useful as it was
I'm an overclocker and am obsessed with hardware cooling. So, much thanks.
Im in love with Noctua
all of my fans are pushing air in
you are doing it right!
Chris Gamer You should have, the front, bottom, and or side fans pushing air in, and the back, and top fans pushing air out. Remember hot air rises.
***** Watching a video is one thing, and understanding it, is another.
Angel Luis Trinidad The original comment is trying to be funny, just look at the first comment by Queen as well. TH-cam are full of jokes and sarcastic comments.
You are just repeating what the video said but in a TH-cam comment.
NZXT s340
Front fans intake all other fans out have the s340 myself
So is that neutral? Two 120mm stock fans at back and uptop, but two 120mm fans in the front too?
+RossLinden97 Same case I have. I have my Kraken x61 radiator mounted on the front (two 140mm fans) and I still have the two 120mm fans that came with the case on the top and back.
XXX_BILLY_XXX Yeah, the fans that come with the case are great. I have an H60 mounted in the front, I have a video of my setup of my channel if you would like to check it out
that's why i love my fractal arc mini r2 :D best example of positive and negative pressure :D
Good vid, best in this area. Only thing I'd add for those who didn't quite get the direction of air thru a fan, usually (about 90% or more) the part of the fan that has the UL, voltage info is the EXHAUST side (i.e. air will be coming out that side). Air will be sucked in on the opposite side.
A lot of fans, even the pricey ones, don't always have arrows indicating which way the air flows.
Snoop dog approves
PCs vape two #pcvapenation
thank you that was really helpful!!
thank you man for this video
I'd like see a smoke machine on a NZXT H440
I have a fog machine, but is it even safe to put fog into a pc?
What kind of fog machine?
DJNathanH You can try it with the PC off. Only have power from the PSU going to the fans and use a clip to turn it on.
i would not recommend it tho , since they are vapor
DJNathanH Or you can invite 3-4 smokers to blow smoke into your case...
Remywoof Smoke from cigarettes is actually way worse than Vapor from a fog machine, the smoke is sticky and disgusting, and even a little of it ends up jamming fans and heatsinks. Not good for airflow.
Great video, just what I wanted to know :)
very useful tips
Air is transparent not invisible, no? Invisible means that light does not interact at all with the object so there is no way of determining where the object is, but transparent means that light can pass through but can be refracted by changes in refractive index, and light does get refracted by transitioning into air, like if you shone a light underwater, it would be refracted at the surface, being slightly bent.
Thanks nerd.
Interesting insight. (I'm serious, it is!)
+Gecko Wizard "Because my, myself is stupid." Please don't talk to me ever again.
+TheHehhoi XD LMAO JAJA. (Ironically.)
+Matthew YimYam so much of a tool you need to clarify when you're being sarcastic (sarcastically is what you meant you fucking shit head)
I want those lighting rams, where can i get some?
+Lee Tube They're called Corsair Dominator Platinum
+Szymon Czubaj are you bullshitting?
+SyncedCyberSoul no...
+Szymon Czubaj ok, well where can I get that specific dominator that does that? Last time I checked dominator doesn't do special lighting things.
U can find it on amazon
really stunning technology!
I know you get this all the time but i just wanted to type that this video was very very useful and without knowing about this i've realized a have a neutral air flow good job guys.
My fan blows using knees.
Really, lol
"Coconut cat" what the f**k
Dust filters are they really necessary ?
spend your money where its worth.
that dosen't anwser my question...
that means instead of spending money getting after market dust filters you should get a better gpu or cpu or even ram
Parsa Oveisi yea thanks, i'm broke now with my 5300$ rig, but it's quite something...!
If you care about having a clean case, yes. Ideally, you should
Great vid
good video. i already like in the first one minute. thank you!
PC Problem!!
So I bought parts and built myself a PC, Specs:
Mobo: Gigabyte F2A78M-D3H
CPU: AMD Athlons X4 860K
RAM: HyperX Fury 8GB 1600MHz
Graphics: Asus R7 260X 2GB OC
HDD: Seagate Barracuda 1TB 7200RPM
PSU: Cooler Master B500 ver.2 500W
Problem:
So the PC was running for 3 days just fine, playing BF3 and doing web surfing. Then a few days ago it just died completly. Now everytime I try to turn it on I have no video output or anything, nothing starts up except the fans.
I made sure to keep myself clear from static electricity by touching the case everytime I was about to touch something.
And the CPU dropped in without any pressure what so ever on the first attempt so unless pins can be bent when its in the socket they should be fine.
Ive tried a new PSU (600W), a new graphics card aswell as all the ram slots and with different ram without any difference.
I also tried to boot without any ram inserted but I didnt get any beep codes.
Is it the motherboard thats the broken piece, im leaning towards the motherboard but some say it might be the CPU.. any suggestions??
Any help appriciated!
Post this on either /r/buildapc, TechSyndicate, LinusTechTips or TomsHardware forums. There's plenty of help to find there. TH-cam is filled with a lot of bad answers and trolls.
WikHellfire - PlaystationShare yea it look like your MB died on you man to bad.so wat you can try is look at you MB electricity connector if it work good because electricity get to you fan but not your CPU and D ram
WikHellfire - PlaystationShare well, if the fans are working its probably not the motherboard... i would say its the CPU but i do want to know, which case were you using and were you using any extra fans? did you OC at all? did the computer feel at all like its over-heating?
WikHellfire - PlaystationShare Probably it's the motherboard, CPU issue is HIGHLY unlikely, imho.
WTF Google+ do you think this is a normal usermame? whats wrong with you?!
1st case was a Fractal Design Core 1100 with the included fan, 2nd case is the In Win 703 with the included fans.
No overclocking, and I dont think it have been overheating, tried to keep an eye on temps and they didnt seem to go too high.
You could of used a Doobie!!!! would of been so much more fun 😀
"Positive" air flow.
Thanks broo for your helpful suggestion..
Good information
What is that Ram?
Hugo Alks crucial ballistix i think
Hugo Alks actually its Avexir Core. i got the same ones :)
Bowen Zhao Thank You :)
Been Looking for nice looking ram to go with my blue theme build ;D
That RAM is horrible i hate flashy LEDs.
AngryBullbog if you are saying that the RAM is horrible because it has LED's then it's a matter of preference, but if you have any other reasons for disliking it, I would love to know since I'm planning to buy 8x 4gb of them
glowing rams what money waste lol
IT LOOKS COOL
Building my first Windows computer and this helped a lot!
Thanks for explaining :)
learned a lot, thanks!
Excellent
Nice info gan
Definitely would love to see the idea fan set up for a Thermaltake View 71
well done
Nice video
Thank you!
thank for the note about video card and cpu cooler fan
So what about watercooling? Where is the best place for your radiators? Do you want a push, a pull, or a push/pull configuration for the fans? Positive or negative pressure?
Excellent video by the way. I love these channels
I still have the 760T, I love this case, I dont know when I will retire it lol
You should do this as series for testing various case fan setups using fog, you can even start with mine, a phantom 820
Thanks!