How Do Memory Timings Work?

What do those sequences of memory timings on your RAM modules mean?
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[@ksmasterchif]

THE NUMBERS MASON!!! WHAT DO THEY MEAN!?!?!?

[@DGCastell]

classic.

[@maplefpv]

Brutal Chif DRAM TIMINGS DAMN IT. NO NUCLEAR LAUNCH CODES

[@fahdalthagafi6114]

+BeastMaster 101

[@jackob334]

Wait, show me the link of the video you are referring to, please

[@izzurzuhri]

DRAGOVICH ... STEINER ... KRAVCHENKO ...

[@Bervilat]

00:23 HUE????

[@TicoDK]

hue hue

[@HebertLuiz]

Bervilat Hue BR

[@falagorin]

osso duro de hue

[@thisisMaza]

hue!

[@felipefnt]

SAM NO LTT

[@toskidus]

your english is perfect.. and your purpose to... thanks

[@JJMza]

You guys really went in on this one! You guys straight-killed-it on this *never before explained* phenomena.

[@GglSux]

@Techquickie Hmmm.... I thought that the "importance of RAM Speed" in regards to the Ryzen was due to the fact that the "Infinity Fabric" that is responsible for the "internal com between cores" is running at the same frequency that the RAM, and not so much by the "actual RAM performance". In which case it would rather be optimal to "loosen" the timings in order to (if possible) raise the "base frequency" of the RAM. Have I totally missunderstood this ?? If not maybe that last comment by Luke should be given a "foot note". Best regards

[@uniteker]

Во всем русском ютубе никто блять не додумался снять подобное, спасибо тебе человек!

[@xXDarthBagginsXx]

Why I was glad to find my Dominator kit that was 2400 c10

[@easymac79]

2:24 I'm trying to put together a shopping list, I've previously bought the cheapest item that met my specs, I've been burned many times overlooking some detail. I am so far beyond lost right now, RAM is so frustrating!

[@SpirosPagiatis]

3:02, doesn't the word increment imply increase? So the way Luke said it didn't it mean to go from 15-16-16 to 16-17-17? (just curious about the language, not bitching :P )

[@arcburn6340]

Finally teaching me again after months of junk

[@nO_d3N1AL]

But in practice, how much of a difference does latency make, even in contrived (synthetic) benchmarks?

[@RanplexLP]

it boosted my Ryzen cpu test up a whole 900 points in time spy ( from around 7000 to 7800), so its actually quite a bit^^

[@LastofAvari]

Luke is tilted by about 5° to the left during the whole video.

[@caincha]

Can't unsee it now! o.O

[@garrettk7166]

It's like Thor: Dark World's camera. Slightly tilted

[@AngrySpartan9311]

Maybe one of his legs has grown longer recently?

[@Sheed96]

Lmao

[@stevethea5250]

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. is this true ?

[@TheMacClayne]

The good old days when Luke was around :'-]

[@Mr_3raqi]

where did he go?

[@hemeon]

@@Mr_3raqi Floatplane

[@_M27_]

@@hemeon floatplane??

[@hemeon]

@@_M27_ A business/website made by him and Linus. Kind of like a Patreon-type platform if I recall.

[@danieljax-6853]

Gordon freeman? Im a huge fan!

[@JMUDoc]

Think of memory as a guy throwing numbered tennis balls on command: 1. the bandwidth is how MANY he can throw every second, 2. the latency is how quickly he can FIND the balls he's asked to throw. Memory performance = how long it takes the guy at the other end to receive the balls he's asked for. Thus, it's a combination of the two. If, like me, you're more into tightening timings than upping bandwidth - recent AMD platforms seem to favour the former approach - the first number is the hardest one to reduce stably and it has the biggest impact on real "nanosecond" latency, the second number is second in both regards, and so on. An additional wrinkle on AMD is that the numbers can't be odd; if you try an odd number it will default to one higher.

[@derrickbane9212]

JMUDoc gets the Genius Award for helping noobs understand!

[@garrettk7166]

It all comes back to balls.

[@JETFOURLITRE]

And when you get it wrong it shuts down, that's Nick Kgyrios chucking a tanty

[@oORoOFLOo]

Why tennis guy, why not badminton or pingpong guy?

[@HABITZER]

I messed up and bought 4000Mhz 18-18-20-40 for my 3800x can I down clock to 3600 or 3800 with tighter timings to run in sink with my infinity fabric?

[@erwinlee2842]

request techquickie: how increasing voltage helps overclocking. thanks

[@Dowent]

Rising and falling edges are easier to detect.

[@Paoktsisgat4]

Erwin Lee my assumption is that since clock speeds are counted in hz (times sonething happens in 1 second) when you request too many of these to happen you need more energy. so after a point of increasing clock speeds you need more voltage to keep supporting them (I=V/R so more voltage means more current goes through cables)

[@aidanarguin2485]

It doesn't help overclocking per se, but higher clock speeds require more power, for instance if you try to oc to 5ghz without changing the voltage, it will crash. However too much voltage will produce too much heat and cause the system to throttle or turn off.

[@heattorture4898]

MORE POWAAA

[@lesserlogic9977]

Yes his question strikes at the heart of the matter. Balance of power supporting the clocks

[@MrZodiac011]

Went from 2400MHz CL15 to 3600MHz CL16 which I worked out was a 12.5ns to a 8.9ns. I've noticed framerate is slightly better, in some cases it's a fair amount better from comparing them, but my lows are much better and I get fewer stutters and microstutters, in CPU intensive games like Battlefield 1 and 5 my average improved by a fair amount.

[@johnmachter40]

which 3600 cl16 did you buy?

[@kapitanuran]

C'mon guys it's 2017! If you can download more ram you can surely undownload the timings right?

[@motoryzen]

(facepalm). I'm willing to be that you're one of those people that think a 3 fps difference at the 60+ fps range is a win. Reality check. It isn't.

[@Rezirex]

--joke--> --your head-->

[@GewelReal]

I need to download morr internet bandwidth forst

[@milanmottl8983]

You can even download hyperthreading to your CPU so... www.engadget.com/2010/09/18/intel-wants-to-charge-50-to-unlock-stuff-your-cpu-can-already-d/

[@medokn99]

lol

[@darkontt]

Thank you Luke for making these videos! It's been more than one and a half decade since I had a desktop, and wathcing your videos in the past few years, along with Linus's, Jay's, Paul's and Dmitri's is what gave me the knowledge and motivation to finally build one completely on my own. I just ordered the parts yesterday and can't wait to start. Greetings from Hungary! TT

[@AfonsoSousa31]

Some "Crucial specifications" you say?

[@BothHands1]

AfonsoSousa31 hehe. I use crucial myself :)

[@medokn99]

lol

[@cameronvanhooft]

I just overclocked my Crucial ram from 2400Mhz Ram to 2666Mhz 😎

[@papasauce234]

The Aussie Gamer 2400mhz is hella slow for ddr4 and 2666 is meh

[@benjib2691]

Overclocked from 3200 to 3466 Mhz on Crucial Ballistix

[@matthewtrott]

You said adjust The 4th number accordingly (tRAS)... according to what???

[@ImTheSlyDevil]

exactly.

[@SSBMFAITE]

matthewtrott adjust tRAS by 1, similar to the first 3 numbers until you find a stable timing.

[@xngurevar7521]

Yes

[@marinb_yt]

I heard that the last one should be "at least a sum of all the others" but in this video that wasn't the case. They wrote 14-15-15-31 after adjustments. Do you just reduce it one by one and find a stable one?

[@DeeP-_PerspectivE]

Honestly it won't make a diff but it's fun fucking with numbers right. It should be the Ram timing #1 + #3 and add 2 points. That is what i have read in many sites, not all 3 of them added together. So in that case 14+15+2 works fine.

[@K61r]

Sorry but after seeing small Linus in the MKBHD tour, it's really getting to me, and I'm giggling an hour later XD

[@medokn99]

Ah

[@sttate]

A techquickie that might be worthwhile: Why exactly does increasing the voltage across RAM/CPU when overclocking prevent errors?

[@alfredbanuelos7312]

you need more fuel to go faster but if you don't have enough fuel your engine fails. got to find the balance of the speed you need and the lowest amount of fuel wasted.

[@dumpsterdiverspcreclamation]

@@alfredbanuelos7312 Right! The spark has to be there on time for those pistons to fire! :)

[@Jader7777]

These videos are devolving into "And thats how X works, assuming you're not playing with the RGB settings."

[@stevethea5250]

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.

[@anastav6915]

So bigger mhz and lower cas latency gives you the best results?

[@papasauce234]

Yes, but Intel doesn't get much better after 2666-2933 after which timings is more effective. 3rd gen ryzen you need to account for the infinity fabric speed, but yes, pretty much faster mhz and lower latency will increase performance.

[@HABITZER]

I messed up and bought 4000Mhz 18-18-20-40 for my 3800x can I down clock to 3600 or 3800 with tighter timings to run in sink with my infinity fabric?

[@papasauce234]

The Garland Family Yes, you should be able to. Pretty much any ddr4 can reach hella high speeds but only some have good timings. You should be able to do 3600 14-15-15-15-36

[@hellagesoon]

@@HABITZER 2 yesrs ago for my 1600x i got 14 14 14 34 best ram for ryzen since i saw reviews and its needed for performance. But now they improved compatibility so i think you will be fine but as i know if you go past 3600 there is no performance improvement.

[@rezang5026]

@@HABITZER i think you should just set your ram at xmp profile with 3000 series chips... they support memory speed up to 4400mhz... you can even OC your ram up to 4200 or if you're good, 4400..

What if I combine RAM modules with different timings (eg. CL8 + CL9) and same frequency? Will the slower (CL9) timing be used for both RAM modules?

[@mehzurilo]

0:24 that dank brazilian meme

[@Thex-W.I.T.C.H.-xMaster]

I just cut on my XMP and call it a day. My 3950x is overclocked to 4.3Ghz runs like a real champ 🥲😊....

[@ZAR556]

Well, Thanks to Ryzen especially Ryzen 3000 series RAM Timing and Speed Mhz are Matters

[@thisemptyworm4677]

I have my r5 1600 with 2400 speed :v

[@FacundoGonzalez-cb3dl]

@@thisemptyworm4677 it doesn't cause you bsod's?

[@thisemptyworm4677]

@@FacundoGonzalez-cb3dl ?

[@FacundoGonzalez-cb3dl]

@@thisemptyworm4677 i have a r5 1600 and 2400 mhz and it causes a lot of trouble (incompatibilities mostly) since apparently 2400 mhz is too low for 1st gen ryzen cpus

[@thisemptyworm4677]

@@FacundoGonzalez-cb3dl Nothing major so far. Unless you meant performance ?

[@kefka900]

I miss my old Winbond BH-5 modules. 2-2-2-5 @ 400Mhz (was 333). I'm sure the brand was Kingston. That Ram survived me overclocking an 1800+ palimino, 1700+ thoroughbred (b?) and my 2500+ barton core and last but not least my 3200+ Athlon 64.

[@PassiveDestroyer]

Kefka900 so even older RAM had this timing? Today is the first I've heard of it, but then i only really disassembled and worked on old PCs (Pentium 1 era).

[@jort93z]

older ram always has lower timings. DDR 2 is commonly something like 5-5-5-15 (+- a little). DDR 1 is something like 3-3-3-8 usually.

[@kefka900]

I got into overclocking around 2002, and I'm not sure of older SDRAM had timings. I'm sure it does though since the tech is very similar. Overclocking to me was a lot more fun back then. To make a 1.4Ghz 1700+ run @ 2.2Ghz 24/7 prime stable on air felt like a great accomplishment and saved a lot of money. (esentially turned a $50 cpu into a $300 cpu)

[@joeycracknl]

Kefka900 Think i had those modules @ DDR-400 1.5-2-2-5

[@legi0naire]

People where hunting for the right memory, good old days overclocking was awesome back then.

[@uzairalijaved8444]

I was actually looking for this information the day before yesterday and techquickie makes a video about it. Coincidence!? I think not!! △

[@danexour]

Murphy's Law

[@PabloPerez-sl9ol]

Good Fairly Odd Parents Reference

[@ChickenManiac]

found out 8gs of my ram weren't working today

[@pwnt39]

it could just be loose

[@nderevan5983]

Chicken Man feelsbadman

[@Ir0nF1st924]

Have you tried removing them and re-inserting them?

[@nilssab]

if pulling them out and putting them in again in their respective slots, try changing the slots, worked for me once

[@Ebani]

Might have been the slot, been there...

[@_bearlyaverage]

PC building is a pain in the butt. You buy something you thought you've checked everything. Once you got it, you learn that there are other things that you need to consider. Literal "But wait, there's more!"

[@happykiwi]

Yeah for me it was something stupid like buying the wrong kind of FANS. I thought there were only 1 type of fan but in reality there are 3-pin and 4-pin fans. I got 3 pin fans for a motherboard with 4pin headers so they were stuck operating at one speed profile- max speed. Noisy af.

[@Telogor]

Pro tip for boosting Ryzen performance: if you can't get your memory to be stable at your desired frequency, you can hack it to work properly by increasing your timings. First, find your maximum stable memory frequency. Next divide your desired frequency by your stable frequency. Take that quotient and multiply each of the numbers in the memory timings by that amount, and use those products as your new timings. This should usually result in a stable overclock. You may need to slightly increase the memory voltage and/or loosen the timings a little more for full stability. This may slightly increase overall memory latency, but it can help you make the Infinity Fabric that much faster.

[@SilentGuyX]

Someone has no real clue here lol.

[@TheUchihasparky]

​@SilentGuyX as someone who has no clue, please tell me why this is not true, and or explain your opinion please

[@infernothegreat1041]

I got mine down to about 10 ns of latency with this guide! I think I got a few more fps!

[@RadiusNightly]

CL, RCD, RP and RAS are main, but older overclockers knows what pain it was long time ago, specially without knowledge, with additional RTP, RC, WR, RRD, WTR, RFC1, 2, 3, 4..., RWTTO, WRRD, WRWR, RDRD and T (or different named like CAS to RAS, RAS to CAS, etc.) ending with longer strings of numbers, 00-00-00-00-000-00-000-00-0-000-000-000-0.0..., some numbers has limitations like from 1 to 120, and there was lots of things, and even if one thing are +1 or -1, or 0.5 different, for example, like 10-15-15-25-18-36-3-2.5, but, its unstable, if last number would be 3, it would be valid, but you cant know until you try, restart BIOS, clear CMOS, try one new possible valid configuration, there is billion possibilities left to try.

[@Ebani]

Still used if you want tight timings. None of the info is easily available tho

[@damanginit2680]

Hi Guys, will 2 RAMS with the same brand (Tforce), same speed (say 2666hz), and same size (8gb) but different timing work?

[@dertyp3463]

Thank you! Very well explained! I Wasted an hour searching forums for the plain basics 😅 now after watching this all the details i read about make sense!

[@joj.]

Luke has a Mustache now. Cool.

[@dstarr3]

I can't tell if it's the mustache that makes him look fat, or if it's all of his fat making him look fat.

[@marksoeplepel]

Chubb-R Luke! He has a moustache!

[@dukdo7790]

I didn't even notice until I read this comment.

[@Phodor90]

Probably preparing for an upcoming Dollar Shave Club sponsor spot.

[@reconciliation86]

Oh yeah..Curious.

[@MNGermann]

Hahahahaha, the meme of confused Nazaré!

[@PhilSkydiver]

Caralho manoooo kkkkkkk não sabia que esse meme era internacional kkkkkkk rachei o bico aqui hahahaa

[@servusdedurantem]

İ was hoping to see difference between even numbers and differnt numbers like difference between 16-16-16 and 16-18-18

[@MathewsNunes]

0:23 I would never expect that one day I would see Nazaré, character from the Brazilian soap opera Senhora do Destino, in a Techquickie video. Awesome hahaha (I'm Brazilian btw)

[@TinCarpter]

it's a pretty common meme so that's probably why.

[@RubberDonky]

COME TO BRAZIL!!!

[@MathewsNunes]

pff

[@333dae]

it's a meme

[@tkondor]

I always thought thats Katie Sackhoff :D

[@marty7922]

2:46 Adjusting latency in the BIOS, I forgot about this, wonder if it causes BSOD if set too low. I added two 8GB sticks (16G total) and started having Watchdog errors. I lowered the speed one notch and no more problems. Was it the sticks or the mobo not being able to handle 16GB at factory speed? Bad sticks? They passed several MemTests, no problem. ... BTW All 4 RAM sticks are completely identical.

[@christopherfortineux6937]

The issue with memory test programs is they cannot predict every single instance of a memory load possible. Different games use different file sizes, types, and different loading techniques per say. A lot of this comes down to the engine they use. This is why you can have 99 games work perfect and no issues with other programs and just one throwing you memory errors etc. Also not every profile given to you XMP etc is always stable. This is why they update profiles a lot and typically have many options.

[@GameslordXY]

I'll just set everything to 0 - 0 - 0 - 0,set RAM speed to 14Ghz,set Voltz levels to Lightning Voltz levels(up to 1 billion) and see what happens. Should be interesting to observe. Even fun.

[@IosifStalinsendsyoutoGulag]

So fast that it actually knows in advance what you want to do

[@boerhae]

RIP to this man...

[@boygenius538_8]

The computer will just crash

[@krazus2036]

Bought ram from my local micro center 2 hours away with cl16 18 18 38 timings, the only issue is I can only find the EXACT same model with 16 18 18 **35**. So me, suffering with OCD freaked the hell out and went on a researching binge. So from what I can tell, this 3 timing different won't mean shit?

[@KTSpeedruns]

I've been testing different timings and getting them pretty tight and I'm going to continue re-watching this. Thanks for this video.

[@SweMisterB]

Speaking of Ryzen... As far as i know the infinity fabric "bonus" from faster memory tied directly to the frequency, and completely disregarding timings. Meaning you might actually want to relax your timings, and kick frequency up a knotch, rather then the opposite, if you are hunting that kind of enhancement. Hurting memory performance, but gaining interconnect communication advantages in the CPU... I wonder if it actually provides an advantage, in the real world. In theory, a memory that needs 5 ns to do an action, needs 5ns for that action, regardless of frequency, up to the point where it just cant do it any more. So, increasing timings, and frequency across the board, with 10%, lets you maintain the exact same memory performance, but has increased the infinity fabric frequency 10% without introducing a similar drawback...

[@m-copyright]

The hell is wrong with the audio?

[@slickm7]

muiecopyright just you man

[@Silvain1]

No, it sucks

[@B3Band]

Nothing. Stop blaming others for your shortcomings.

[@christoliver2065]

i hear it too, don't worry. first thing i noticed

[@zippydipity42]

More treble-y than usual. No idea why.

[@Meldium]

Guys I have 2 questions. Q1: With 2 sticks my system can run at 1866MHz which is the claim frequency stock. When i add 2 more of the same sticks my system won’t boot at 1866MHz but ONLY at 1600MHz. why? Q2: I can only boot at 1866MHz with all 4 sticks by ONLY raising the Bus Speed to 233MHz with timings @ 9-10-9-"9"-37-T1. Is the tRAS too slow then @9 instead of 28 that are rated in stock? System Specs: (Yes I know, it's an old platform but plays everything I want still) AMD FX8350 @ 4.86ghz (Currently running Multiplier @22) Gigabyte GA-990FXA-UD3 (rev. 4.0) G.SKILL 4 x 4GB Sniper Series 1866Mhz XPM Timing 9-10-9-28 stock (Currently running at 9-10-9-9 @233MHz) AMD Radeon SSD Radeon R7 240g by OCZ WD 1TB HDD CORSAIR Hydro Series H100 Liquid CPU Cooler ASUS Xonar D2 Sound Card Sapphire HD7870x2 Crossfire CORSAIR Enthusiast Series CMPSU-850TX 850W

[@dxture.3365]

ur last timing cant be that low try 22

[@ThFnsc]

NAZARÉ AAAAAAAAAAAAAAAAAAAAAAAA 😂😂😂

[@dvilardi]

THIS IS BRAZIL

[@alhot11]

I miss luke doing videos :(

[@letsgoiowa]

Ryzen inter-CCX speed is tied to memory clock speed (infinity fabric) so your cores can communicate faster and multithread better the faster your RAM is. Latency does not matter as much. You can effectively make your timings worse but up the clock speed and you'll still get a lot faster performance.

[@benderrodriguez6343]

It's so funny to still see tunnelbear adverts. Thanks for the video Luke, you should maybe update this vide, not that anything changed, but you're a little tinny.

[@loirodeja]

0:24 i really love that meme

[@daminduliyanage]

Thanks for the vid. 3:14 Why should u check intel or amd recommendations for voltage? isn't it the ram manufacturers specs u should check? Or does this voltage increase in RAM affects CPU in a way?

[@8lec_R]

3:30 until 2 months ago. Ryzen 3000 really benefits from tight timings

[@benjaminmcintosh857]

until 3 years ago, all Ryzen benefits from faster & tighter ram

[@AdrianOkay]

hi, I'm from the future, ram has to be as fast as the cpu for maximum efficiency

[@8lec_R]

@@AdrianOkay lol. Yup that's right

[@25566]

I love gamers nexus but their video about memory timings is like 25 minutes and is titled "part 1"... You guys do a great job explaining these things so they make sense

[@anonymoustallguy]

Can timings be increased to make the RAM more stable at higher frequencies?

[@UnacceptableViews]

anonymoustallguy so you want to make your ram slower in order to make your system faster??!

[@patricksalinas5864]

anonymoustallguy Yep!

[@justinlemieux9456]

@@UnacceptableViews adjusting timings and going higher won't always make the ram go slower, as long as you stay in the same latency rang or better ... CAS/ram speed * 2000 like stated in the video will help you achieve high speeds with good latencies even when loosening timings.

[@druzzi9054]

Basically timing is rate of fire MHz is damage per shot

[@officedemon]

so CL14 3200mhz is the same as CL18 3600mhz?

[@RuruDouji]

The audio is horrible in this video...why?

[@cgraham6]

Good video! I've always found memory timings to be very cryptic. This helped.

[@profo4544]

They were pushing low volage 1.2 voltage ram for alot of ddr4, with like 19-16 cl timings. Though i found the much better route was to get 13 CL 1.35 voltage ram. the voltage made no difference. Though any ram that needs over 1.5 bolts i beleive is to high. But the new 1.35v ram runs much better with my system then the 1.2 v did. IF anyone curious i was running a i7 8700 with 2666 ram. Dont plan on OC'ing so

[@sliqsta1]

so how much of a performance boost in gaming will i get from tightening cas latency from 16 to 14?

[@yeetus8366]

sliqsta1 I don't really think its worth the effort( and risk). CPU performance is far more Important. the way I see it I rather have a larger cpu cache memory ( the memory in the cpu) as this has far more impact on data access speeds of the cpu. if you have a good cpu with large cache the RAM memory has "plenty" of time to load,access and send data. but correct me if I'm wrong :)

[@unvergebeneid]

Latency will dominate if you have a huge number of small operations on gigabytes or more of data (big databases for example) and only if the CPU can't predict where the next access will happen (so generally if it's not close to the last access). In other words, working on a relatively small number of big data structures as happens in games is the exact opposite and throughput and cache size will be much more important.

[@TheSenate_]

Not very much, CPU clock speed and memory clock speed make a much bigger difference. Only then should you tighten your timings to get that last bit of performance.

[@Rusiputki]

The simple answer you are looking for is ....Fuck All

[@RedmilesShark]

Rather RAM size than speeds is important for 99.999% games.

[@Traumglanz]

This was a useful and simple techquickie which totally blew it by not explaining sub-timings. :p

[@meowskull]

how do magnets work tho

[@DGCastell]

black magic

[@jasonlisonbee]

Will the world's blackest paint make a magnet stronger?

[@techy4198]

YoCatto Vantamag confirmed

[@garrettk7166]

@@jasonlisonbee Yus. Paint your magnets in Vantablack to get a performance boost.

[@uranium_donut]

sees beginning of Video, runs to shed, looks up , lol there are numbers (9-9-9-24)

[@Gamer-df9xt]

RGB RAM rocks!!!

[@johnmachter40]

@3:18 what does it mean "adjust ,accordingly' " accordingly to what exactly?

[@eggyrepublic]

The number LEDs inside the RAM module will increase FPS by 1 each. This is why it's recommended to have at least 3 RGB strips inside your PC for good gaming performance.

[@GHOSTSPECTRE]

My ddr4 2133mhz timing 11-11-11-11 it's normal?

[@steffeeH]

And for those wondering: No you don't need to squeeze down those timings to get better gaming performance. RAM speed is far more important as said in the video - you can even safely sacrifice some extra latency cycles if that means that you get higher RAM speed and still gain gaming performance similar to those who have the same RAM speed but at lower latency (especially at higher framerates).

[@spakeschannel]

3:05 *Decrement, not increment. You decrease, not increase timings.

[@Sparks52]

I look at the first and last numbers. The CAS Latency (CL) is often referred to as the most important, but the tRAS, which is going to be equal to or slightly larger than CL+tRCD, is also important. If the tRCD and tRP are large compared to the CL, you will get a large tRAS which will impact heavy processing demands on RAM, especially those involving numeric computations. In considering DDR4 4400, 19-26-26-46 vs 17-18-18-38, the disparity between CL=19 and CL-17 would have been minor and a major price difference wouldn't justify the faster CL. However, in looking at the next numbers and the resulting tRAS, the disparity between 26-26-46 and 18-18-38 is significant - and therefore opted for the CL=17 RAM because of the other timing numbers. Had the numbers on the CL=19 RAM been tighter down the rest of the timing string (e.g. 19-20-20-40), I'd have selected it for a much lower price.

[@carlosvile9832]

Bam! This is the best explanation. The tRAS is the only reason I have yet to buy the G.Skill Ripjaws S5 with CL30-36-36-89

[@neerajbaruah1749]

Can I use 2 different ram sticks with cl21 and cl22 latency, can't find another cl21

[@Zarabozo]

This video failed to explain how to evaluate those latency numbers to decide which one will work best.

[@abluequaker5486]

I've always had the general gist of this concept and it's why I never went over 2400Mhz for DDR3 and I won't go over 3200Mhz for DDR4 because you basically have 'sweet spots' for each generation of RAM where the technology improves to the point that the Speed of the RAM can be higher without compromising the CAS latency.

[@Drakeziel]

R7 1700x, Asus Prime Pro, Corsair LPX 3200 C16 build here... Just letting you guys know that this video was very informative and extremely well timed.

[@medokn99]

*timed*

[@deathdoor]

Nazaré!!

[@rodatamx]

Nazaré on LTT, what a day, what a glorious day

[@hydrus77]

Tunnelbear is owned by the NSA, just thought id let yall know

[@rembramlastname3631]

They do know. They're sell-outs after all.

[@hazemhozien359]

what ram should I use with ryzen 3900x and Asus ROG X570 Crosshair VIII Hero (Wi-Fi) G.SKILL Trident Z Neo (For AMD Ryzen) Series 32GB (4 x 8GB) Model F4-3600C16Q-32GTZNC DDR4 3600 (PC4 28800) Timing 16-19-19-39 CAS Latency 16 Voltage 1.35V price $ 225 or G.SKILL Trident Z Neo (For AMD Ryzen) Series 32GB (4 x 8GB) Model F4-3600C16Q-32GTZN DDR4 3600 (PC4 28800) Timing 16-16-16-36 CAS Latency 16 Voltage 1.35V price $ 331

[@hazemhozien359]

what ram should I use with ryzen 3900x and Asus ROG X570 Crosshair VIII Hero (Wi-Fi) G.SKILL Trident Z Neo (For AMD Ryzen) Series 32GB (4 x 8GB) Model F4-3600C16Q-32GTZNC DDR4 3600 (PC4 28800) Timing 16-19-19-39 CAS Latency 16 Voltage 1.35V price $ 225 or G.SKILL Trident Z Neo (For AMD Ryzen) Series 32GB (4 x 8GB) Model F4-3600C16Q-32GTZN DDR4 3600 (PC4 28800) Timing 16-16-16-36 CAS Latency 16 Voltage 1.35V price $ 331

[@beachcomberfilms8615]

I bought a Corsair Vengeance RGB Pro 64GB (4x16GB) DDR4 3200mhz kit a couple of years ago and for some reason when running all it crashes windows. If I only install 32GB it runs absolutely fine. There seems to be something wrong with Corsair's rate timings which cause a BSOD. Part Number CMW64GX4M4E3100C16 and their stated timings are 16-20-20-38 but this causes system crashes. Does anyone know how to make them stable?

[@therocker1212]

First access row then column? Then bring the 3D RAM!!!!

[@shorty808100]

I know Ryzen CPU’s run best at 3733mhz CL11 or CL9 are the best atm I have Kingston Hyper Fury X 2x16GB 3600mhz CL11 I wanna go to 64gb of 3733mhz CL9 if I. Can find it, I may OC the ram I have to 3733mhz for better performance, I found some cheap DDR3L called patriot it’s 1600mhz CL11 with a 9-9-9-25 bought an 8gb sodimm for my stuck with single channel hp laptop it says *( 5 Rank Double Sided Module )* in the description I dunno if that’s for real or if it’s qaud rank gonna buy a 16gb kit for my other amd A-6 laptop in a few days it supposed to be made specially for some Intel processors and the AMD A-6

[@TheNerd]

Hey Mr Skywalker: We miss you!

[@jap7384]

This was a quick, easily understandable breakdown of a quite complicated topic and for that I am very appreciative, HOWEVER...RGB shaming is never okay. My pc, my rules.

[@onystrom]

Ryzen build x370 asus prime with 2x8mb CMK16GX4M2B3000C15 running at 14-16-16-32-62-1 (2666MHz) I have NO IDEA, and I mean no idea - if its good, bad or whatever. Systems becomes unstable if I tighten more... Ryzen=RAM nightmare... sigh...

[@mmmcake44]

Lol I got a commercial for Ford bashing my choice of a Dodge Ram. A-1 ad algorithms google.

[@JAAAYCOBB653]

I tried overclocking my ram from 2667 mhz to 3200.And my cpu was 3,85ghz. I have b450 tomhawk motherboard, I went in bios and set DRAM Frequency to 3200mhz. And I enabeled "Memory Try It !" I setted that also to 3200mhz and some other numbers were there.After that i saved bios and i couldn't get any picture on my monitor whatsoever, I tried everything, even checked my pc fully and don't know how to fix it right now... My keyboard and mouse are also somehow disconnected evem tho they are connected. IF ANYONE KNOWS ANY KIND OF SOLUTION HOW TO FIX THIS IT WOULD BE GREAT! Pls help..

[@ZXTech]

Luke you are not allowed here. Go back to floatplane fields -Slavemaster Sebastian

[@videocardzrule354]

Memory is very important. If you browse Newegg, and find a very overpriced memory set and, there’s a different set that looks the same, but cost less. Your not paying extra for nothing, with the more expensive of the two. You are paying for a quality binning process. I run DDR4 4,000Mhz 14-14-14-28-1T in quad channel on a 7980XE at 4.8Ghz. Don’t buy CHEAP memory people!!! It just ain’t worth it. My 4x8GB memory set was nearly $500 with taxes and shipping cost. Now, I’m not saying you should spend that much. But, it is a important part of the system. Don’t SKIMP ON MEMORY!! Cheap memory will always black screen after just about any type of timming or frequency adjustment in the bios after you hit F10+save lol.

[@dps1689]

I have a ryzen 5 3600x changed my ram speed and timings. Corsair vengeance 3200 cl 16. Changed it to 3200 and 16 18 18 36 and 1.35v. Motherboard is Asrock x570 phantom gaming 4. Now my cpu seems to be 60+ celcius idle, yet when I open task manager it goes back to 30c idle (I don't feel warmth from my fan nor does my fan speed up, normally I feel warm air flowing at that temp). could this be caused by my changes to the ram settings? Default it was at 2133mhz and 15 15 15 36, the volts I cant remember how much exactly. If I reset my bios, do my ram settings revert back to that default? Thank you

[@__-xb9ms]

豚のPCは最近3200の14－14－14－34－48に変更した。前は確か3600の16－18－18－18－54？だったかな。差は僅かな差だ。ほぼ同等だ。4枚刺しでは少しこれが限界だ。これは3950での話だ。ZEN3だとより差が出る可能性もある。値段？・・・・WWW。64GB化しただけだ。コスト的には見合わん。

[@sungchoi1415]

so which number is the most important? The first number? Out of these 2 latency, which is faster....the cl30-40-40-89 or cl36-36-36-96? I need to buy but don't know which one is faster. Please someone tell me which one if faster....thank you

[@MWSRD]

Hi i have 4x 8Gb 1866mhz cl10 kit hyperx and a gigabyte 990fxa-ud5 mobo Fb bios as Fc is invalid image!!!! and a fx8350 and i'm having real trouble with setting the speeds up for memory it seems to default to 1600mhz and no xmp or anything in bios if i set multiplier to 9.33 as stated for 1866mhz it don't boot but the bios goes to 10 for memory multiplier. so i have to increase FSB speed to 230Mhz to get 1810mhz memory speed. ANY info is appreciated.

[@rezang5026]

I love AMD but boyyy these ram timings and speed are frustrating me.. why can't AMD design a chip that's insensitive to ram like intel... I've been going through some crazy BSOD nightmare in the last 2 nights.. and for you, AMD users... a quick tip. Don't upgrade your BIOS firmware to the latest firmware if you're using 2000 series chip.. AMD have slowed down your B350/450 chipset and no matter what you do, you won't get 3600mhz stable. Stick with the older firmware, the one before they implement "compatibility with 3000 series chips"

[@jacobhn2]

Okay i some how understand, i have CMK32GX4M4C3000C15R, if i clock it at 2800 Mhz it’s okay, dose the memory clock on cpu 2600 Mhz (7820x) be ok then. Mabe cpu run 2600 Mhz bus speed to the memory but the memory is a littel faster to do it’s job with lower latency at different clock speed but it still transmit data at 2600Mhz betwen mem and cpu, i’m an exnerd?.

[@crazytech5755]

I have the 2700x. I lowered my timings from 16-16-16-36 to 16-15-15-34 And it took me from 63 fps in world of warcraft to 74. No fucking joke. I stood in the exact same spot, and disabled, and enabled the overclock.

[@zeekmx1970]

This is very not helpful for me in 2021 where cas is 14 on 3200 DDR4 G.Skills Trident Z dual rank 64GB 4x16 B-Die. What I can say about that is the timings on it could need to be tightened up just a touch to get the latency down from 69ns to perhaps 64ns Latency check is a good way to know if things aren't quite right. Most DDR has a spec sheet that shows what the latency should be. I regret that I can't provide XMP 2.0 programing help on it yet. It's mostly about improvement to the sub timings and I'm not confident yet because I'm new at it.

[@indexMemories]

Also incorrect overclock can slow down certain operations. You might even not even encounter such nuances if you don't use complex software. Just make sure you're pumping enough voltage into your dimms... tl;dr Every aspect matters and not just benchmark results.

[@ltf9]

I don't think you needed a tl;dr for three sentences / one line lol