RAM Speed and Timings As Fast As Possible
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- เผยแพร่เมื่อ 31 มี.ค. 2016
- How do you interpret the speed and timing specs on RAM kits, and how much does it matter for your PC?
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To be honest, I was expecting Linus to go over what each of those four timing values actually stand for...
+Robert Faber I think he couldn't find a way to fit the whole CAS into a FAP video.
+Robert Faber Yeah... kinda disappointing, it was a 6 minutes long video about "you probably dont need to care about your memory speed" -_-
+Tengu Siv www.akkadia.org/drepper/cpumemory.pdf
+Tengu Siv what i saw online the fastest speeds came from 2133-2666 mhz on ddr4.. so most likely something like the Kingston hyperX Predator @2400 mhz CL 12 will be around the sweetspot of clockspeed and latency.. at least afaik..
+Robert Faber I would like that he at least metioned of probable compatibility issues (capacity, same parameters, and can U mix manufacturer) and rows in memory (ie. Single Sided/Double Sided memory).
No "Command Rate" timing as well :(
LinusTechTips: 80% technology, 20% bad puns... and we love it XD
+Bladerunner12120 True :-D
came for the thumbnail, stayed for the puns
and 100% sponsors.
no we dont
4:00 you definately need a wrench when fixing a PC
But, Jeremy Clarkson has proved that a hammer can fix anything.
and a rusty one too...
I was hoping to hear an explanation of what the timings and frequency actually mean. You basically just spent six minutes to say "it doesn't really matter lol"
I wish you guys would explain the timings of the ram in more detail
That's what I was hoping for. This video is way too high-level to be interesting :/
+Tom Is a Door if the timing is 9 for example
the ram will take 9 cycles to get the data you need
so if your ram is 1800mhz as example
it'll take 9/1800000000 = 5 nanosecond
which is very neglictible for most pc users
hope i explained it well ..
Vaaas Yes, but there's four numbers (eg. "9-9-9-27"). What does each number mean?
+Tom Is a Door
I just took a quick glance at the wiki page about "Memory Latency", which led me to CAS Latency, which led me to Random-Access Memory Hierarchy, and tbh, there's too much information in there to be put on a single TechQuickie video if you begin to scratch the surface and add technical terms like CAS/CL, Trcd, Tras... that will need to be defined by other technical terms that will need to be defined by other technical terms... The pit is very deep. I believe they went deep enough to not drown themselves.
For more information : RAM timing is expressed in a series of numbers (like 8-8-8-24) which each represents a number of clock cycles to complete a specific task associated to RAM manipulation. The absolute latency in nanoseconds is calculated both with these timings, and the actual RAM frequency, which is half of what is usually announced, because marketing likes big numbers and Double Data Rate doubles the speed ! So take a 1600MHz 8-8-8-24 stick (like the ones I have in my rig, which are Crucial Ballistix Tactical 8GB Low-profile for my SFF rig), understand it's a DDR stick so it's actually a 800MHz stick, then calculate that clock ticks occur once every 1.25ns, so the absolute latency of my RAM for these timings is 8*1.25 = 10, 10, 10 and 24*1.25 = 30, in nanoseconds.
So yeah, a DDR3-1600 8-8-8-24 is quite good, but a DDR3-2333 with 9-9-9-27 timings will be better because of the far higher clock speed. It's a result of two variables. Careful though, not every motherboard will support faster RAM !
+Daniel Lo Nigro (Daniel15)
1st number >> CL: CAS Latency. The time it takes between a command having been sent to the memory and when it begins to reply to it. It is the time it takes between the processor asking for some data from the memory and then returning it.
2nd number >> tRCD: RAS to CAS Delay. The time it takes between the activation of the line (RAS) and the column (CAS) where the data are stored in the matrix.
3rd number >> tRP: RAS Precharge. The time it takes between disabling the access to a line of data and the beginning of the access to another line of data.
tRAS: Active to Precharge Delay. How long the memory has to wait until the next access to the memory can be initiated.
4th number >> CMD: Command Rate. The time it takes between the memory chip having been activated and when the first command may be sent to the memory. Sometimes this value is not announced. It usually is T1 (1 clock cycle) or T2 (2 clock cycles).
the most important one is the 1st one (latency) ..
"copied from website"
“Useful for a lots of things”
Does ram speed effect card performance?
hypzrx does DDR3 effects performance on a gtx 1650 S ? , compared to DDR4
You can actually double your RAM with a quick catalytic converter install.
+The Hoax Hotel need that forced induction to feed that ram in order to take use of the that extra ram.
Hey Linus, stop deleting comments... the link with "downloadmoreram" was just a joke.. it's still April Fools day jezuz ;-)
I doubt he's deleting them, more than likely it auto sent to spam.
+Toon M Why does he have to be so mean :( I didn't know I wasn't allowed to make jokes.
Henry Wallace yea, but everyone knows you need to reinforce that with 4 barrel injectors
"so simple to use, that like my family could do it" - Linus Sebastian 2016
I wanted to know this ram timing for a long time.
Thanks Linus
what? an actual video, on april fools day? MADNESS
+Mrab Ezreb Well, considering it came out on Vessel a week ago...
Please make. Power efficiency as fast as possible. Explaining the silver, platinum, gold etcz
that would be a good video
+SoloNita they made a video on power supplies and in that vid they said what it meant
You're the best, LInus! You're my Go-To Techie
Skylake actually benefits a lot from higher speed DDR4 RAM, especially on CPU intensive games and software. You can get a jump of 20+ more frames from the default 2133MHz to 3200MHz speed kits.
these transitions to the ads are unreal with the creativity
old time watcher, placed a smirk on my face seeing your commmercial start before you video. YEs.
Love the way linus explains RAM!
3:17
Yes I'm sure that spending money on faster ram is better way to improve graphics performance when using an APU, instead of... oh, I dunno, buying a graphics card.
+Doomguy 8gb cl9 1866mhz £30 would give like 5-10fps over some shit ram you would be upgrading from.
No gpu worth £30 can do the same.
Thank you Linus !!! You just helped me with my homework❤
Now I remember why I subscribed to this channel. Thank you Linus
Ping as fast as possible
exactly!!
+Jake Woodworth Time for data to go server and back to your pc. There.
+Mr. 42 savage
how do you not know what ping is?
+WonderWaffle how do you not know that you don't have a good life
Спасибо, что все очень понятно объяснил. Приятно видеть такого компетентного специалиста)
Speaking of April fools, tunnelbear!
Is there a better Vpn then tunnel bear ? Would appreciate so incite on vpns
+J Ramos
Try betternet Vpn its on AppStore and playstore and Windows. Ps it's free
that tunnelbear seque was amazing
Digital Foundry (partially) disproved this. In CPU bound scenarios in gaming, faster RAM can definitely increase your minimums. Not an excuse to buy the most expensive stuff out there, but springing for a tier or 2 higher could be worth it depending on price.
+DrearierSpider1 the problem with that is you need oc board to use faster than standard ram. And costs are just rising 2x as much for board a little more for ram and if you have z board already then it would be shame to not buy k processor then additional cooler.... That's how i come to conclusion, screw that, and bought i7 6700 (none k) h110 board and 16gb of standard 2133mhz 14cl memory for my gaming pc.
Hi, i'm hoping you can give me a simple answer. I'm looking to buy Ram for an i7 pc for editing movies, i don't do gaming. 2 brands do 16GB (1x 16GB) 2400MHz DDR4 RAM, one has Latency 15 , the other has latency 17, I've watched many YT vids that talk about frequency, overclocking blah blah but i still don't get whether i want the 15 or 17, ? i will be going for the recommended better quality brand but would like to know if imagine they were exactly the same quality should i buy 15 or 17
Hei Linus, can memory compression be a bottleneck when rendering on multicores systems?
You guys might shed some light on this. Thx in advance!
THE TRANSITIONS ARE BACK!
According to a few sources such as digital foundry, if you are CPU limited in games then ran speed can make a substantial difference to frame rate. For instance a core i3 cpu or even an i5 in fallout 4 with a fast gpu.
His hands look like he's been eating Doritos.
Seems like they used to do lifetime not too long ago but on reddit they have repeatedly stated that they are not going to offer lifetime anymore, so this might be the next best thing.
For anyone interested in using this for Netflix. I can see 4 servers from my list
Windflix US
Windflix UK
Windflix CA
Windflix JP
Side note: a lot of the stuff on Netflix JP does not have english subtitles.
Steve Thea who are you talking to bro😂😂
@@hassan_dgf The person who he was talking to either deleted their comment or account.
hey linus your contents are just awesome...so was this...and can you explain what exactly is 'cpu- registers'
I've been waiting years for this.
+Dayvidlol Instead of just researching the information yourself you wait for a linus video? What a great accelerated pace of learning you have.
+wtfPlatypus only if what you say is correct. ;)
I have quad channel DDR4-3000 15-15-15-35 2T 1.35V GSkill Ripjaw DIMMs. It definitely makes a noticeable difference for overclocking benchmark scores. They don't even make DDR4-3000 this tight anymore; got these nearly 2 years ago the day i7-5820K launched.
"Tunnel to another country" - Linus Sebastian
#smoothracist
+Ion Garcia "We have to build a wall" ~Donald Trump
Low key telling Mexicans how to get in.
We definitely have to build a wall...and do many other things. They already use tunnels so improved seismic sensors and drones are being proposed.
@@sciguy9119 and then after the they stop people from using tunnels what do you do after that because that deffinatly wont stop people from finding a way in. no matter if a wall is built or seismic sensors are in place. Its not going to stop anything.It's a waste of money
Casper What foolish logic. So perhaps we should unlock prison cells and tear down prison walls since prisoners often breakout and escape. Or perhaps we should remove locks from doors since homes are broken into every 24 seconds. This liberal mindset is a danger to America. Since people break the law and disobey, your logic is to eliminate the barriers and laws rather than punish the criminals. Do you not see what foolish and irresponsible reasoning that is? Of course not. Liberals have no ability to reason logically.
@@sciguy9119 so then does prison keep people from breaking the law? no. people will still break the law. so what im saying is people will still do what they need to do wether yiou try to stop them they still will find a way its not the same as prison bc its complicated but to me i feel theres a better way to approach things
Today I watched a 3 min German ad just because it was funny 2:50 funny and informative sketch(4k gaming) and 10 sec actual advertisement. Every ad should be like that o:
in some memory speed test from digital foundry there was a noticeable difference on games using skylake processors with ddr4, as lons as there was a processor bottleneck
this has changed with Ryzen. It loves fast ram w/ low timings.
Memory speeds advertised as part of an XMP profile might not be achievable on AMD-based motherboards. XMP is a sort of automatic memory overclocking setting that was designed for Intel motherboards. Some motherboard makers offer BIOS settings to help you achieve these faster speeds on AMD motherboards. But these settings aren’t present on all boards, and they don’t always work when they are present.
Steve Thea in my experience with my Ryzen build XMP works fine and I can archive the advertised speeds
You didn't explain what the latency timing string of numbers meant, nor did you explain anything about how certain motherboards are not compatible with certain speeds.
please do a video on live streaming videogame with screen switching from computer screen to different cameras connected to the computer on the fly all the while also being able to control mic volume from a mixer. mainly switching between different cameras and the screen where game is being played
It's amazing how I got a linus ad and watch linus again after I skip ad
3:59 If only i had an open end wrench for my pc Linus has the best tool kits around.
We need teachers as exciting as this guy.
Nice video!
4:08 I have that exact same ram. Looks literally like mine. 4 x 2GB for me lol. Built in 2008 8)
THANKS! finaly someone more trustfull then just some random guy ( like i am) said it.
I have one doubt. In our Motherboard, we have 4 slots 1,3|2,4
so if we have a diff. frequency rams in 1,3 and 2,4 will they work fine?
As our ram speed will automatically adjust to 2133Mhz. Is it necessary to have the same CL
I have one question for the Linus Media Group; is faster RAM latency needed for any applications that are meant for creative designers, like Adobe Photoshop, Adobe After Effects and Autodesk Maya?
Oh man.. I was starting to think I was the only person who remembered 9-9-9. Good show.
Chrome in 2021: I will use as much memory as I want
brother my lap i5 ddr3 8gb wanted but what is mhz plse reply which mhz suitable ram
I have a 2018 13" MBP 8/256 right now (first laptop in 10 years). General use for me would be Safari with 10 tabs, Spotify, gmail, Word document, iMessage, FaceTime. I may get in to editing photos down the line but have never used Photoshop or Lightroom or anything like that and don't plan to really learn them. I also don't make videos. I am a general artist (photography, drawing, guitar/singing/songwriting, woodworking) so I may dabble with some artsy apps later, but none too serious. However, the one I definitely plan on using most is Garage Band or possibly even Logic Pro X. I also plan to own my computer for 5 years. There's also always a possibility I may delve in to RAM hungry apps in the future and I'm not sure what apps may grown in RAM use down the line after updates etc... I'm struggling with whether to upgrade to 16 RAM. Do you think it's worth it in my situation?
I've seen some ddr4 online that got me confused same exact specs some say made for z170 and other for z270 platforms is there a difference?
would you make a video about download mirrors? like when you are downloading software and there will be something that says "mirror provided by IWeb" for example
That sponsor was so seamless...
i use sponsorblock
Must all the memory modules in a system have matching timing (i.e. exact same CAS, etc)? Thanks
Well explained.
when i was on ivy bridge, going to ddr3 2133 @ 11-12-11-30-1T from ddr3 1800 @ 8-8-8-26-1T was noticeably faster in cs:go, tf2, & a few other games. i was not using integrated graphics either.
most are wrong about memory speed/timings, speed is best over timings & the faster kits (over jedec standards) are worth it especially those like $5-$15 more while still using the standard voltage (ddr3 1.5v, ddr4 1.2v).
That is true in certain situations. but DDR4 @2133 Mhz is simply enough for 99% of tasks. Nobody needs anything faster.
With the new Ryzen APUs, which uses your high speed system ram without a GPU, 3200hz ram adds a 20% improvement to fps in games compared to 2400hz ram.
Bravo on the Herman Cane joke. Bravo.
Sooo, I've got a 16gb (2x8) kit and want to get another 16gb (2x8) kit (both 3200mhz). Do i need to match the ram timing on the second channel???
i bought the gskill trident z 3200mhz cl16 ddr4.. would i see any big diference if i went with the cl14?
I'm the creative content type and I was wondering if ram mhz matter for 3D Rendering, Photoshop(mass layers), Zbrush, Maya? I just bought the i7 6700K and I want a 32 gb quad kit. Would it be somewhat beneficial to have 4x8 ram in a dual channel mobo?
Great video as usual.... why are your palms yellow tinted?
Awesome man! :)
Verry nice and easy explanation, well done Sir, even if i cannot understand how Claws and Fur might make my connection to any other country any faster... ? if you know what i mean... :D
i respect linus for not making a 1st april fools video
He did
Internet Genius
where , at least it's not on the main channel
+Tchitchouan Inouane th-cam.com/video/CMTUZtF27kA/w-d-xo.html
Was there something recently about new hard drives that fit in ram slots ?
0:15 don't you mean trivia?
Cool video!
What about the green background?
I see pixelisation on the edges of your body and hair here. Tweak chromakey/shoot some scenes with zooming.
+SneakyJoe's Salad RUS Also, tunnelbear doesn't allow torrenting.
Question. Would a separate 'gpu' slot on the motherboard, using slots on the motherboard for vram be an alternative to current full video cards? Seeing people are nowadays trying to make pc rigs smaller and smaller, plus having the option to both change vram and gpu separately, I would think it would both lower production cost and increase modularity of a pc.
Honestly, I don't have enough hardware knowledge concerning the video card to know if this would even be possible. It's why I'm asking
+Shangori It's technically possible, although it would be better if the memory slots were on the Video card. As a matter of fact, i'm pretty sure it's been done in the past, with Sound cards at least.
On the other hand, HBM is just around the corner, and 8GB VRAM should last you for at least 4 years from now. Not sure about the future of 4GB cards, seeing how the memory can get choked even in 1080p.
So does ram speed matter for video editing? I have 64gb of ram already. Would getting faster speeds benefit at all?
64 Gb ram, who are you Bill Gates
+PhaseSkater What do you do with that?! shoot lasers to the moon?
+PhaseSkater Yeah it does I would buy some right away if your speed is slow.
its not enough.. better upgrade to 128GB ddr4
kasio That is too much just keep it at 64GB high frequency DDR4 it has a much higher bandwidth
wanted to mention that some games do benefit from faster ram, where other components are not the bottleneck.
there was actually an interesting article put out regarding how memory speed actually had a direct effect on the minimum fps for Fallout 4, again, where the ram itself was the only bottleneck (they were using haswell-e and a titan X for benching)
Another way faster memory can benefit SOME games, like Skyrim or Fallout, is by using 3rd party software (such as ENBoost) that forces a portion of the system memory to be used as a pre-cache/overflow for the VRAM
How much wham do you need for a server tho
=\ I was hoping this video would answer my question but it didn't. If I underclock some DDR4 3200 with 14 latency to 2400 would my latency drop as well & if so by how much?
For those who haven't fell for april fools and still don't know why they're still using white background, i'm impressed that you got this far
The guy plugging the ram card in with the dollar sign eyes scared the hell out of me at 4:00 in the morning
Those bears having fur makes all the difference to me.
Now please a LTT video with way more in depth comparison on the latest DDR4 sticks please, record frame times and report on min, max and average please!
Ohhhh... Gskill has never let me down :D
OK I got a question. I have a laptop that is a few years old. I'm planning on upgrading it with an SSD to get a bit more use out of it and I'm wondering if it's worth upgrading the RAM as well. Here are the specs:
Lenovo G580
i5-3230M @ 2.6 GHz
Nvidia GT 635m 2GB (2GB is total overkill for this card btw)
8GB DDR3 @ 800MHz
1366x768 resolution screen
I have't found myself running out of ram even when playing some games. I'm wondering if getting faster RAM will have any noticeable impact to performance? Intel's website says the processor supports 1333 and 1600.
i think the only one thing u realy need for this laptop, is a cheap ssd, more or faster ram for an a bit older dualcore i5 would not help you outand is a waste of money, the 635m will keep you always back and is for sure in 99% of the case the bottleneck
english skillz over 9000 :D
That's what I think too. It's an old machine and it wasn't top of the line when I got it either. But it's still capable enough and I think the crappy 5400rpm hdd is slowing it down quite a bit. It's not my primary gaming machine anymore thankfully :D
Thanks for your answer!
a "cheap" samsung evo will give this book some wings
have a nice day :D
When buying ram, what's the designation of c15 or c16 mean? The speeds are listed as identical.
Linus did you mean that the latency number should be lesser but with higher speed don't you get higher latency ? I'm really confused on this topic please reply to me in the form. Thank you
Can you make a fast as possible explaining what Pascal and Polaris is and why I should be excited for them please?
+Reo! Vendredi but I don't even know what they are, Linus just talks about them a lot
Can i use a ram that has CL15 even the compatible upgrade for my laptop is CL17?
What if you are using single channel ram? Wouldnt more speed or lower latency help?
Does faster ram make a difference when rendering in CG or CAD software?
please explain.. ram fast at dual channel than single channel?
Hello..I'm trying to upgrade my RAM. Too 16gb ddr3 1600mhz. I have 6gb ddr3, 1600mhz, timing 9-9-9-24. But I can't find the same timing as the one I have in my PC. Does it make a difference if the timing is different?
In ddr3l 1600mhz which one is best 9 or 11 or any no's I don't know please suggest me (including company name and model) I want to buy soon
you saved me about 50€ Linus! Thanks ;) Great Episode
How about Video-Editing in Adobe Premiere Pro & After Effects? Isn't it better to have 3000MHz RAM Sticks instead of 2400MHz? RAM-Preview for example ;)
I use tunnel bear to get around school Internet restrictions haha
yaseen reza lol? that's a great answer ... not!
***** looool I replied to the wrong comment, sorry bud haha
Hey Linus, here's a video topic suggestion: SSD Over Provisioning and WAF. Thanks!
Can you pair 2 different rams with different CL rating? in laptop
nein - nein - nein - 24 ... Great timings, linus !
« Their bears have claws not to mention fur »
How calculate timings latency ? What formula to know ms ? 2400 mhz 11 12 11 31 vs 2400 mhz 11 13 13 30. Which better ?
4:12 I do, you’re not the only one cursed with knowledge.
Hi linus,i want to ask,i got new quad channel GB DDR3 Team elite Dark series 19200 2400 MHZ and core i7 2700k. it said it support 32 GB of ram,but when i installed all of the ram,my computer is always restart every 3 second. would you please explain me why my computer behave like that? any suggestion? thank you linus
Faster ram can yield fps boosts in cpu bound gaming workloads, DigitalFoundry tested this a few months back when comparing overclocked locked skylake chips to just using faster ram
You guys should have Brandon do a Techquickie on Full frame sensors vs Croped Sensors
im happy you talk about onboard graphic (APU) using RAM as Vram but you forgot to mension that iGPU from intel also use 1.8GB ram as Vram.
you also forgot to mension that higher band speed give mostly slower timings such as 1600mhz cl5 will be at lowest 2133mhz cl8 (exept corsair who's stuck at cl9 to cl10)
and alot of memory can't handle overclock as the sold specs is already bordering the limit (those cl9 and 10 of corsair seems to overclock better ,well it should anyway with those timings)
my ddr3 2133mhz 16GB at CL8 max overclock that it can reach is 2150Mhz but limits the 4770k overclock to 4.6Ghz while setting it at 2133Mhz for ram the 4770k can get 4.7Ghz
just an example to show that its more complicated as most people usely think.