Rambling about DDR4 memory channels and ranks

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#DDR4 #RAM

[@marceldiezasch6192]

"As the channel gets more popular, the questions keep getting stupider"

[@HardOCPTV]

I feel your pain.

[@bookworm8415]

Ha... If i was braver I’d also be asking stupider questions tho...

[@branchprediction9923]

@@HardOCPTV no more videos?

[@tobiwonkanogy2975]

The folks who just show up have zero frame of reference of how Buildzoid creates content.Perhaps a short series on Overclocking basics to point new channel viewers toward . This would put us on the same pages roughly. Not everyone understands how the power gets from A-B.

[@olo398]

@@tobiwonkanogy2975 yea ive said that to him for awhile through comments, maybe theres another youtuber that does it better, but i'd love to hear it from the classic bz ramblin way.

[@dw8555]

I'm one of the "stupider" viewers, and I'm fine with that. It's why I watch your videos, so I can learn. Thanks for all you do!!

[@vitaliyjuterbog8912]

Everyone starts stupid.

[@revealingfacts4all]

agree, I wish he would kill the elitus tone/attitude. If not for the douche-baggary insulting tone and too frequent bla, bla, bla talk, I would have subscribed

[@LostOnTheLine]

His information is also not 100% correct, so that tone is REALLY douchy. Eg. "You can't use Dual Rank DIMMs in dual channel" 100% incorrect. Particularly if you have a board that has only 2 DIMM slots, essentially 2 Paired Dual Rank DIMMs in a 2 DIMM board runs the same as 2 sets of 2 paired Single Rank DIMMs (4 DIMMs) in a 4-Slot board. If you have 4 Dual Rank DIMMs you CAN run them, but they'll perform the same as 4 Single Rank DIMMs. There's a SUPER SLIGHT difference but it is not perceptible even to The Flash

[@TheDude50447]

@@LostOnTheLine 2 dual ranked sticks in a single channel is recognized as quadranked by the controller. It's usually rather pointless doing that with 4 sticks since your frequency just goes down the drain.

[@LostOnTheLine]

@@TheDude50447 True, ranks make a small difference that most won't notice but if you are running with 2 sticks per channel (2 in A & 2 in B for 4 in Dual-Channel) single rank gives slightly better performance. But that gets flipped if you are only running with 2 DIMMs. 2 dual-rank sticks running in Dual-Channel will give a slight performance boost (all other things being equal) than 2 single-rank sticks. I always tell people the differences are small enough that nobody is going to notice it, but the difference is there. For Single-Channel they say a single dual-rank stick performs like 2 single-rank sticks but that I feel is less accurate performance-wise though it may be true in a technical sense

[@unvergebeneid]

One good reason to go with an asymmetric memory configuration: you're on a laptop and they soldered one of your memory sticks right onto the motherboard.

[@LinkStorm13]

just one? And the other one is freely acessable? That seems very odd, but I guess laptops are just like this sometimes

[@unvergebeneid]

@@LinkStorm13 yes! Same for the SSD: one soldered in, one M.2 slot. For me that's already a plus though tbh. I'm used to laptops of this form factor soldering everything into place, so to have _some_ ability to tinker with your hardware makes me happy =D

[@tarfeef_4268]

@@LinkStorm13 yeah lots of thin and lights that wanna say they're upgradeable do that. Esp business targeted ones.

[@countach27]

@@tarfeef_4268 I feel like they do that to make laptops obsolete more quickly, if the soldered RAM dies you throw the laptop in the trash.

[@Layarion]

@@countach27 can't you just, remove the solder, change sticks, and re-apply some new solder?

[@willgart1]

"can I ask a question?" "yes, thanks for confirming there are more stupid question on this channel" ;-)

[@dewaynethomas3122]

I just watched a man take an entire minute to say the words "about 90%".

[@peterderbeste6817]

Finally someone who doesnt confuse pagefile with pagetable :) that made me happy, thanks

[@tarfeef_4268]

People do that?

[@derlars3685]

7:18 Intel glued together two lga3647 xeons and that has 12 memory channels. Its called Xeon 9200 but nearly nobody uses it.

[@ActuallyHardcoreOverclocking]

FIRST

[@Paiin00]

very funny

[@porkowner]

Nice.

[@branchprediction9923]

Nice

[@willgart1]

again???? wow, you are really fast.

[@branchprediction9923]

@@willgart1 yes, its very impressive

[@beachsex]

That whole opening made me LOL. And I didn't think buildzoid could get any better 🤣

[@Paiin00]

u see a 40min video.... I see the next 5 days of good sleeping :D

[@GurkenkoenigZ]

And every evening you learn something New.

[@dude3278]

How do you know so much about this stuff? Do you have a electrical engineering degree? A computer hardware degree? Just want to know how you know so much

[@ArturoTabera]

He's Tech Jesus' Brother.

[@unlimiteddy5546]

I have a bachelor in electronics, and I can say that I learn a lot from these video's (this is no standard learning material). When a topic interests you, you can learn about it online these days. If you have enough passion for a subject there's no-one stopping you from learning it. And Buildzoid is doing just that.

[@OhWaker]

A lot of passion and interest and curiosity can get you very far into looking into things very deeply.

[@ftn5546]

He is not an engineer; he's just very knowledgeable about PC technology.

[@jonnyj.]

@@ftn5546 More like very knowledgable about typical electrical engineer work, not just "pc technology." As an aspiring EE, I can say with 100% fact that he DOES have the knowledge of an electrical enginner.

[@Michael-OBrien]

ignorance != stupidity Ignorance = not knowing something Stupidity = being unable to know something

[@anjamendarkson5366]

Educational, concise and down to the point. You Sir helped me make an informed decision with my hardware purchase. Thank you very, very much.

[@Trumanlol86]

Hope more people come back to watch this video. With all the current talk about memory ranks, this video would help a LOT of people.

[@nuclearzerg]

so what better: all four slots with single ranks, or 2 slots with dual ranks?

[@lePoMo]

From what I understand: 2 slots with dual rank. Reason: the distance (signal runtime) is identical between the 2 ranks. He touched on in another video (maybe topology video, maybe x570 board review) that for 2 sticks, daisy chain topology is better for overclocking, while for 4 sticks T-Topology is better because T-Topology has the same length to all the sticks while daisy chain doesn't. disclaimer: if i remember correctly. i watched that a year ago.

[@WillFuI]

From what I understand all 4 slots in single rank would technically make it dual rand per channel. But if u are saying like 4, 8 GB sticks compared to 2 16 GB sticks both running dual channel the other would slightly be better one because the Signal doesn’t have to go farther and 2 u would still have upgradable and theoretically 2 sticks OC’s better than 4 sticks

[@ArturoTabera]

No one: The Verge: Look, our PC is so fast it doesn't even need dual channel configuration! We even needed to LIMIT fps in game so the PC doesn't explode!

[@mattweller]

i love buildzoid's "i'm telling you this for the 1000th fucking time" voice. never change!

[@alberthakvoort8473]

Ok you have to choose wisely: AdoredTV 50 min. Video or Buildzoid 40 min. Video, oh boy... XD

[@aksshaysharma96]

i love these type of videos, get an opportunity to learn more ,guess that why it is said "He who asks a question is a fool for five minutes; he who does not ask a question remains a fool forever." Keep making such videos they really help a lot.

[@nero008]

You should make a whole series about how cpu works in a very detailed manner !

[@potatosmasher1072]

I will be timestamping useful parts of this video for my personal use, but you guys can take advantage of them as well 0:38 Memory Channel Explanation Start (Mentions the difference between a connector and a connection) 1:16 Visualization of channels/more explanation Important Distinction - This video will not be reviewing memory topology, seeing as Buildzoid already made a Faulk video addressing that. 2:27 Maximum theoretical memory bandwidth of memory channels (inc. formula)

[@trxe420]

great, my laptop has exactly 12gb of memory. I thought that was weird. So if I am understanding this correctly, if I have a dual channel Ryzen 9 3900x and I want 32gb of memory, while it would be more efficient to have a 4x8gb configuration I would have better performance due to higher possible clock speed using a 2x16gb configuration, filling only 2 ranks. If I end up needing more capacity (I am a gamer who is also a programmer) I could add another 2x16gb later and fill up all 4 ranks but I would likely have to drop the clock speed. Great, now I just need to know if I should target B die or CJR (looking at the gskill neo's at 3600 mts. Shooting for 3700-3800 mts, but I don't know how well CJR does. I hear it is good for clock speed, but the timings suffer and that B die is so much more expensive. Memory makes my brain hurt :/ Thanks for the breakdown, this was helpful.

[@mrdali67]

"Rambling" is the absolute definition of this video .. could have explained this in like 5 min ;) Anyway ... One thing that would actually be usefull to know that you didn't explain in this very detailed video: In the last 6 min or so you talk about the 64gb configuration that is expensive .. well ya it is more expensive than 32, but still at about same $ per gb. I had hoped you talked about these higher capacity systems a bit more instead of "rambling" like you put it :) about 4gb or 8gb modules in various combinations. What does the ranking do when you need those 64gb ram. You buy 4 modules of 16gb ram that most certainly is Dual ranked for each module. Does this have any performance effects when you have 2r+2r for each channel in say a Ryzen system. Not talking overclock .. just plug the sticks in and run them at stock speed.

[@34ccsn]

Well ahhhh yea, love the video.

[@resune]

on my 3200 c14-14-14-31 dark pro b-die, setting manual timings for everything while running xmp clocks and primaries on my 6700K, I can get an effective bandwidth of 96% on reads and 97% on writes of theoretical max bandwdith, getting 49.1gb/s for read, and 49.7 for writes, theoretical being 51200mb/s

[@milllosh]

Which test?

[@resune]

@@milllosh aida64

[@milllosh]

@@resune I asked cause that may not be reliable. I get 49.6GB/s read, 48.6GB/s write on Aida with 2700x + G.Skill Trident Black 3200C15 @ 3133 c14-14-14-28 (all manual, my 2700x hates C15 and C16 as well as anything above 3400MHz, where x470 gaming 5 also has an issue) but other tests show more like 46.6-46.8 read, i/e UserBenchmark test. Latency is more consistent, 63.6-65.7 on Aida, 63.0-64.4 (clustering at around 63.4) on other tests. Now, if we get the same/similar results in same test, that is a good reference to compare performance. What's your latency, something around 48ns? That should be easy with Intel. [edit] my Trident Black is low bin b-die

[@cldpt]

hey Buildzoid! I have a very weird scenario and would love some help deciding if I should return a new kit. I basically got a Micron 32GB 2x16GB 3600 cl18 kit that was the exact same model in the shop page as the one I had already, but this ended up being a different _submodel_ with not only different rank (dual vs single on the old) , but also different PCB (samsung B2 vs Hynix A2), rev E vs rev B (micron), 17nm vs 19nm, different row addresses... the works. The JEDEC tables es also slightly different, but XMP profiles are the same, and so are voltages and whatnot. My issue is these 2 kits, which are installed paired in the two respective channels of my Mortar Max B450 (3800X on it), have trouble booting with XMP. I can only consistently boot them consistently after multiple attempts of resetting BIOS, going from 2400 (JEDEX) to XMP but also manually setting RAM frequency in advanced to 3600. I also managed to use XMP then manually set 3200. It does seem to stay consistent after it boots to OS once, but I fear I may have trouble in the long run. I also did not do a thorough memtest on the 64GB setup, but I've had no freezes or restarts the week I owned it. My question here is if I should be returning these (shop provides a month) and look for the exact same submodel kit. The new stick was 40 euro cheaper than the old one from 1y ago, so I guess I learned my lesson. I also know I should not be getting 64GB over 2 kits and sell my current kit instead to get a 64GB kit, but I don't need absolute performance, I just happen to have a use case where I need 64GB for virtual machines building Chrome and Android and whatnot.

[@LDWilliams]

This is Only 40 mins long? Where's the other 20 mins? I feel short changed.

[@Hotrob_J]

Thank you very much! This was very helpful - my laptop had 4gb soldered and one 4gb stick. I kept hitting the page file, and was worried about mismatched sticks. Got a 16gb stick to swap it out, and I've had no noticible performance loss.

[@DexStar420]

Because some of us actually like to hear you ramble. That is why you had to make this video. lol. I don't know, maybe it's just me, but I like that you don't edit your videos. Makes me feel like I'm right there just hanging out there with you.

[@WrexBF]

Has anybody gotten their hands on the new 3000 or 3200 Ballistix kit that's replacing the old AES kit? Is it a good overclocker like the AES kit? Here's the part number BL2K8G30C15U4B

[@theov3rmind]

I'm one of the weirdos running 3x3 ranks (64GB 3600MTs) on z590 (11700K). I actually tried to buy 4 dual rank sticks, but the retailer sent me one kit of single rank and one kit of dual rank, even though I ordered two kits of the same SKU... Weird.

[@blaze909]

pagefile is something not a single tech "guru" talks about it's just "more memory can"t speed up your pc" BS finally a voice of reason that sees the problem with pagefile

[@ammartech3660]

very informative video as usual ! thanks for taking your time to share the knowledge :) Got a question... why not making an overclocking video on those 3600 cl17 kit " b-die " on Ryzen cpu? im really interested to see how it will perform

[@MarkRose1337]

I've seen 3% to 15% performance increase from single to dual rank because of interleaving. Latencies can affect how much of a benefit can be had, obviously.

[@Xandeur121]

Hello and thank you for very helpful video! Question i have is Do you prefer with AM4 and daisy chain 2x16Gb dimm's 2R OR 4x8Gb dimm's 1R? Is there any noticeable difference like in overclocking?

[@Phynellius]

there's a certain grade of stupid that no level of information can penetrate, so don't worry too much about the strange questions about extremely basic concepts. The old adage isn't entirely correct, there are no stupid questions just stupid people asking questions... the same questions, over and over with slight variations on the wording

[@SaccoBelmonte]

Can I cut a memory stick in two and use each half on a memory channel? I have a pretty neat Xacto. Now seriously. Can you dive more on those more obscure settings such as Interleaving and BankgroupSwap? I have a 64GB 4 dimm kit (TridentZ Neo 3600 CL16) running at 3733 CL16 and I wonder what else can I do to improve it. My timings are already as tight as I could set them. Also would be good to know which parameters are the preferred ones (besides primary) to further lower latency. So far I know primary, tRCT and TRFC are good candidates.

[@FinlayDaG33k]

BZ in 2020: "ECC is servers" JEDEC in 2021/2022: "SAY NO MORE" (DDR5 is getting ECC)

[@thomas1699]

You got the rambling part right.

[@keubis2132]

0:30 angry mood intensifies

[@heni63]

@@Nicholas_Steel I think he means Bz and interprets his voice

[@Nicholas_Steel]

I guess.

[@davidfriedmann807]

You said there you have done a video on "memory topology" in the past. Where is that video ??

[@brovid-19]

I feel like I learn so much and nothing at all but I am compelled to binge

[@SpinneretteAlex]

hmm not sure about my purchase of two 32gb sticks for my x570 board now, sounds like doing 4 8gb sticks would have been better

[@ArturoTabera]

If you NEED 64GB you will NEED 128GB in the near future.

[@rumham7631]

2x32 = 64, 4x8 = 32..

[@user-bf5sc8pn8x]

You explain things much better than Wikipedia ever does, so keep making videos like these

[@therocinante3443]

You're the man! I'm learning so much by just watching your channel. Before too long I'll be a computer scientist lol. Thanks for all you do, my dude

[@ebentechstudio]

i am using hp zbook 17 g3 with 4 ram slot and Intel(R) Xeon(R) CPU E3-1535M v5. can i mix RAMs of different bandwith. currently i am having 20gb RAM (8gb 2400T, 8gb 2133P and 4gb 2400T all being 1Rx8). can i add 16gb 2Rx8 2666v? all memorys are DDR4. when i checked my CPU memory support on intel page i see; DDR4-2133, LPDDR3-1866, DDR3L-1600

[@josemiguelbs2580]

Ey man maybe its a stupid questions but I have a doubt with my motherboard is an Rog maximus apex and it have two dimms slots and it have like a third dimm slot looks like an slot of ddr3 to install 2 extra m. 2 disks. Im planing to equip It with 2x16 dual ranks gskill. My question is if this slot for the m.2 disks is controlled by my memory chanells if I Will loose max frecuency or bandwith or something..

[@jeremymoon9088]

I want so badly to point out the irony in the way this started, compared to how it ended; but I know how the comments section works

[@cracklingice]

I'm in the 48gb camp. Got 4 sticks of 4GB Adata XPG Gammix D10 2400mhz (AX4U2400W4G16-DBG) in July 2018 for 164 USD when memory was insane stupid expensive. In July 2019 Newegg was having a sale on 8GB OLOy 2400mhz (MD4U082417IFDA) so I picked up 4 sticks of that for 90 USD. Nearly half the price for double the capacity just a year later. I really got bent over in 2018. Anyway, I run all 8 sticks in my X99 Taichi with 6800k at 4.2ghz 1.275V and have overclocked the RAM slightly to 16 16 16 36 timings.

[@lagynas]

COVID-19 exists Buildzoid rambling about DDR4

[@johnathanpearson3203]

Oh crap. My 4 sticks 2 are rank 1 two are rank 2 so my zen plus only runs at 2667mhz. ☹️

[@Hr1s7i]

Before I was using a workstation board with 128GB ddr4, I used to run 2x8 with 2x4 ddr3 on my old AMD system. Worked no problem.

[@Failzz8]

So apparently zen 3 is one of those "weird cases" and now I'm still unsure, is it better to get 2x 16gb dual rank, or 4x 8gb single rank for zen3?

[@Shockwave231]

Based on the video, i think both those configurations are dual channel quad rank so the bandwidth and efficiency will be essentially the same given that the clock speeds are timings are comparable between both kits. With the 2x16 though, you can upgrade your capacity in the future. You just wont be getting any additional efficiency benefits as you're already at quad rank Edit: I just realized rank is per channel at 24:10 so 4 single rank sticks is still just dual rank per channel where as 2 dual rank 16gb sticks allow for 4 ranks in a single channel

[@nathanwhite617]

4 ranks over two channels is what they say is good. So 4 x single rank sticks would be 4 ranks over 2 channels. 2 x dual rank stick would be the same as long as you put on in each channel. 1st and 3rd slots or 2nd and 4th slots.

[@antong3987]

well ... like ... um

[@acrock21]

what i am trying to figure out is the memory purchase for my next build... everytime ive wasted money on higher "mhz" than i needed. i am trying to avoid this... i am planning on purchasing the 7950x3d sometime after release so i am looking at the 7950x specs... it says it supports 5200 2x2R w/ two sticks... and 3600 4x2R w/ 4 sticks... which in my consuming eyes looks like 64gb of 5200 vs 128gb of 3600... however there is no DDR5 @ 3600... therefore i am confused AF. anyone got answers or advice for me? should i just buy 4 sticks of 5200?

[@ME-dg5np]

Oh that s a good explain man !!🎸🤸🏼‍♀️

[@chomper720]

Lets say you have a shitty B460 board and a core i5, would quad rank be better or stick to dual rank only?

[@KabelkowyJoe]

14:00 What the f*&@# are You talking about dude, this video seems to be absolute *garbage* Prove me wrong because im not "an actuall overclocker". In regard of memory combining dual single channel and ranks 25:00 are time traveler from 90s? Never analysed this issue before becase its non issue. Except when it comes to 32GB 32 chip modules on consumer 4 dimm dual channel motherboards >> All i wrote is based on what i remember or improvizing. So im willing to change mind. . *Dual or not, and ranks* First of all - if you have dual channel memory controller 64bit each, you have usually 2 slots for each channel (4 in total), 16 chips, 8 on each side = 2 dimms x 2 ranks = 4 in total. Ranks are logical grouping of banks to create 64bit wide coherent adressable block of memory, has nothing to do with number of dimm slots although it's limiting it's number. Obviously 2 ranks on same PCB would not work in dual - since there is only 64 bus shared between, from memory controller perspective those are 2 modules sharing same bus via same slot. Because usually one sided pcb are 1 ranks (block) of memory while double sided are 2 ranks or even more. This creates real issue for 32GB modules made as 4 ranks of memory on one pcb (32 chips). Its like 4 kids to be feed, refreshed and access to bus. To have >64GB if you are allowed to use 4 ranks max would be limited to use max 1 on each channel. Interleaving and all that crap is more likely related to how memory is refreshed and and problems of it's acessability but not for regular data access since those modules are different adresses anyway. Rather than to performance directly it can hurt accesability when it comes to refreshing when such block becomes bigger. If you allow 16 block this wont be case. 90,95,97%.. you wrote. 32GB and more DDR4 memory creates real issues overall, Intel Xpoint tried to solve (no need to refresh) . You wrote 40% real bandwidth.. well 60% time and more (expotentialy grows) is used to refresh its content, not an actual transfer . When it comes to high capacity memory this became reall issue. But what it has to do with OC? Plus al that you wrote as 90,95,97 is more likely related to refreshing related issues but in past when memory was much smaller. Currently its get much worse. You created, so much confisung content i cannot believe what i just watched. *Drawings and colors* How channels are placed on motherboard odd, evenly or pairs depend on motherboard For such reason there used to be different colors. This actually makes me nuts cause instead each channel having different colour its for dummies. To help distinguish dimms 0 from dimss 1 of each channel those 0s and 1s have different colour. Meaning dimm0 are same colours as dimms1 despite being connected to different channel so we would put pairs into slots of same colour to fill both channels and use in dual mode. But it depend on motherboard usually its like here forum.dobreprogramy.pl/t/ram-i-dual-channel/548484/14 But it's not always the case. Try to be more precise - causing more confusion than helps. *Forcing single channel* If you fill each channel's dimm's 0,1 with pair of different capacity and speed one channel with 4GB and 8GB on another, each channel will be mapped into separate adress space being accessed as single channel 64bit bus although via separate bus. It's not possible to map it differently. But when it comes to speed No! Maybe, just maybe i assume in 2020 its possible to have "hybrid mode" or to have, different timings and frequencies on each channel but not possible from what i know to have hybrid mode at all. So - what are you discussing in this video? Issue that has never been an issue as much im concern. There is slow ram and fast ram but on Amiga not DDR4 PC. Im using DDR3 im poor i know, memory controller always chooses common denominator. Never in mine entire life saw ram to work different speed across the board. I quesion message of video - possibility to access part of such ram 4GB or 6GB with different speed, dual and part in single and results from OC perspective. It's rather not possible. Even if so it will always end up badly since RAM adress space it's not same as program adress space. Data can end up being anywhere. *Timings in dual* For obvious reason combinig memory modules of different timings on same channel (real life scenario comes along with combining different capacity) to achieve dual mode forces every channel to use timings of slowest modules connected. From what i know it's always the case, even if every type of module is grouped in separate channel. If it's not case than maybe your right.. please provide proofs. I though fastest common denominator was always the case when combine modules of different speed. The only issue for an actual overclocking could be ranks (one sided modules), empty slots or whatever. Never heard of except for Amiga about RAM to have different speed on each channel. Maybe it's case but still - since OS adress apace it's not same thing as program adress space averange result would be same as for dual - timings to be as fast as slowest module in system. *Ranks again* Since as you mentioned consumer product are limited to 4 ranks, i will not argue about that. Usually we have 16x chips on each module and if these chips are 8bit chips you end up with 2 ranks on each module, one for each side. Iif you planing to fit all 4 dims having 4 ranks on module limit to use only 2 dimms, Its that simple has nothing to do with all you said in video. On server motherboards you could have 8 dims if you like. And even 32 GB on each module 4 ranks each will be alowed = 16 ranks total. I can only quess that ranks are important from memory controller perspective to let those modules refresh separatly. More ranks more problems more modules to control. More modules to gather information from etc. When it comes to "overclocking" what you wrote is just bad. Every line should be terminated. For such reason imo its always better to have all modules propagated but using single sided memory than empty slot and double sided. But i wonnt argue about that. Obviously longer line more difficulties. But this also is no longer case - since distance between CPU and DIMM is much furgher than propagation time of it's clock since many years. Clock domain are everywhere. The key is every line to be same lengh. If not terminated properly even empty line could be problem for memory controler stand point when it comes to extreme OC. Those are separate issues determined by physical layout of motherboard number of slots while ranks are rather logical problem for memory controler point of view how plan it to be refreshed. Of course it can hurt performance but..fuck me. I was expecting to learn something not to argue. I know nothing when it comes to OC.

[@paulhetherington3854]

CH'= these or that - American dialect - never Lang(lanksuage - Algiers). CHMZ'- These movements - were verified. He has, zero ID - for this - that.

[@giserson2]

Came back to this video to refresh my memory and about the comment on CPUs with single channel DDR4 memory controllers, they exist in laptops, AMDs Stoney Ridge laptop CPUs can only use single channel DDR4

[@doditz69]

I wonder why MHz stayed vs MTS that's we french know as a STD ;) hehe and it's also flowing better in a long overclocking debate lmao. Nice vids well explained!!

[@MrJFBro]

Your audio glitch at 2:19 was tripping me out, I had to triple-check to make sure it wasn't me. I imagine you put that in there just to mess with us 'cause no way you're having audio latency dropouts.

[@IstyManame]

I've heard that non-k intel cpu memory controllers have sorta locked voltage so OC is not that great, then does it mean that dual rank memory is better than 1rank with something like 12400 even if you're overclocking?

[@SchwarzAA]

so in the situation of 48GB does it go like this (8/8/16/16) or like this (8/16/8/16), ram is the same in everything but the size

[@MrNside]

There are no stupid questions, only stupid people.

[@tobiwonkanogy2975]

Is dual rank or single rank better for 16gb ram (Should I use 4 x4gb sticks or 2 x8gb). The dual rank has the double the access via DIMM slots. Meaning each stick can use the full bandwidth of a single lane. Use the four by four GB sticks. ez enough Unless you are chasing high frequency

[@uzor123]

A single-rank DIMM to each slot is ideal. 2x8gb single rank, each in its own channel.

[@spandanapotineni4290]

Great Video (y)

[@landinggearup]

Dude find some adderal. This would be a great video if you could get a complete thought out without getting sidetracked with another thought.

[@tylercoombs1]

I come here to be mocked for my stupidity, no need to apologize! LOL

[@bs_blackscout]

MEGATRANSFERS.

[@poulpork9338]

Lol, that intro flame was predictable for the regular viewers but it good he makes another video about it. Doesn't hurt to answer questions (mildly sincere)

[@VGDocs]

So now I wonder- if there's such a massive performance improvement going from 1 channel to 2 channel, why isn't higher channel support there for more common consumer chips (like Ryzen 5, 7, intel i5, i7, etc running quad channel)

[@TheBackyardChemist]

20:40 You mean a 4 Gib memory IC, not 4 Gb. This is one of the few times where base-2 / base-10 units may actually matter.

[@shankarkesarwani3169]

I did not understand why to prioritze the frequency over rank?

[@patrik5939]

30min's ago....I was a stupid too, thx cool video

[@hitznkoff4285]

Someone send BZ 64 gigs asap.

[@plonk420]

re: APU and memory bw: on the distributed computing project World Community Grid, i had about the same points per day (PPD) with 1x2400 stick vs 2x2400 stick. or no worse than 10% slower on a 2400G. running a GPU project along side it was 20-30% fewer PPD, tho. also, on my Threadripper 1950X, there was little to no difference between dual and quad channel or again no more than 10% fewer PPD. basically, you couldn't see the difference on a spreadsheet.

[@jjtb7300]

Or just say DDRn n and n is just a. Arbitrary gen and data rate

[@thomas1699]

Riddle me this: I have an i-7 laptop with 2, 16 GB so-dimms of dual rank DDR4-3200. (As per CPU-Z) The RAM works in Dual Channel. I have an i-5 laptop with 2 unequal so-dimms. 4 GB DDR4-3200 is soldered on the motherboard. And there is a 16 GB DDR4-3200 single rank so-dimm in the only RAM slot. Does this laptop run in "partial" dual channel, (up to "matching" the 4 GB on the board?) And then use the remaining 12 GB (of 20 GB) as Single Channel? How DOES that work? BTW Windows Task Manager says I am only using 25% of available memory. But it also shows a lower clock speed than 3200. Cheers!

[@Drumaier]

ATM I'm using 3x16gb ddr4 of the same ram model and I guess two of them are in dual channel and obviously the other isn't. Aida test and that kind of syntetic benchs are giving me terrible numbers (half of when I had just two sticks in dual channel) but Cinebench and Blender tests are the same and cpuz exactly the same numbers. I wonder how much should I push it to 64gb to have all dual channel since I don't need the extra 16gb at all. I added 16gb to the 32gb because Unreal Engine has been crashing on me when migrating big projects, collapsing the 32gb. Someone any ideas?

[@Artur_Stoll]

Does UE stop crashing? If you use less than 32 Gb in other programmes, so there is nothing terrible or wrong with it. UE is just a little bit slower in big projects.

[@drakechapman7476]

I love learning from your "Rambling" videos.

[@andrewryder3075]

Addressing your question (at about 23:12) regarding 8-bit wide vs. 16-bit wide DRAM chips: most desktop DIMMs use 8-bit wide chips because they are cheaper - i.e., you can buy two 8-bit wide DRAM chips for the same money as a SINGLE 16-bit wide chip of the same capacity, and have twice as many chips to bin from! Also, it's far easier to get good 8-bit wide DRAMs because of yields; there are far more defects in 16-bit wide high-density DRAM runs.

[@TigonIII]

So do I have this right, when a motherboard says 1DPC 1R that means that I can only put 1 stick in each channel, thus NOT being able to fill out all 4 DIMM slots?

[@bartoszskowronski]

I have 48GB ram all gskill 3600Mhz cl16. Ryzen 3500X, msi x470 gaming puls max 8Gb 1 Rank, 16Gb 2 Ranks, I had 16GB and add 32GB and it don't work, only 2133mhz but then i swap 8GB sticks with 16GB sticks they all run fine. My OC is the same as only with 16GB (3666Mhz RAM=FCLK) but latency (secondary etc) are a litte looser (just xmp and a little more clocks, latency tune is automatic by motherboard)

[@slowfudgeballs9517]

How do you end up with an odd ram speed if the speed is doubled on DDR? Like 4133 or something like that.

[@burakbiyikli]

Frequency is like mph, it is continuous. The markers like 3200 or 4133 are arbitrary like speed limits of 30 or 45. The physical speed will just be 1600 or 2066.5 plus or minus the accuracy of the clock (a few percent)

[@slowfudgeballs9517]

@@burakbiyikli Ah, so they don't have to be integers.

[@dallatorretdu]

lets talk about how they invented the double data rate

[@lotfikerzabi1880]

awesome explanation again, thanks!

[@alekseivoroshilov9040]

Hello, may I please ask you a hybrid (stupid and tricky at the same time) question?: I am looking forward to buy a Thinkpad T14 Gen 3 with i7-1260p, dGPU MX550 and 16GB 3200 RAM soldered to the motherboard. This laptop model also provides one empty DIMM slot for the dual channel capability. I want to add another 16GB RAM into it. Given that Gen 3 (as Gen 2 and Gen 1) comes with single Rank soldered memory, which RAM stick should I go for: 1Rx8 or 2Rx8? Like, what would be a better solution: 1) M471A2K43DB1-CWE 16GB 2Rx8 PC4-3200AA SE2 11 (or xxxEB1-CWE) ((I couldn't find any info about the difference between D and E dies)) 2) M471A2G43BB2-CWE 16BG 1Rx8 PC4-3200AA SA2 11 The first one is dual rank which is probably better in terms of utilizing capacity, but is it neccesary concidering soldered memory is single rank? Or maybe the second one is better because of B die and retaining the clock speed? Lenovo support could't provide me any useful information, their website have both types (1Rx8 and 2Rx8) memories available as alternatives. Thank you in advance for your time answering my question and looking forward to get the right answer :)

[@ObviousCough]

Did buildzoid do a video on 4 dimms in the x570 unify yet?

[@mcp20366]

I assume socket 1700 fits in line of the others in the LGA group? Or has Alder Lake different useability?

[@samanmahdiabadi]

@AHOC please help me Biuldzoid ... I ordered G.Skill 8x4 CL14 F4-3600C16Q-32GTZR alongside with X570-E Gaming from Asus. Please tell me that will it run at 3600 @CL16 or not? . ( CPU is 3950x ) thanks for the video.

[@generaxz5929]

Isn't MHz correct for DDR as far as Hz is just 1/s? I mean can just count the transfers/s in Hz and it's exactly the same as MT/s

[@GurkenkoenigZ]

No because you Transfer 2 times per Hz.

[@generaxz5929]

@@GurkenkoenigZ Hertz is just a unit for measuring frequency. Transfering twice per *clock* (not Hz!) simply means 2*clock (in Hz) = data-rate (in Hz).

[@thiscouldntblowmore]

Running 24gb on Ryzen 3000 4-8-4-8 or 8-4-8-4??? Identical samsung single rank b and d?-die, xmp's are the same. Any idea? Thanks. These are 3600CL18 sticks, R5 3600 can only run 4 of the stable @3000, i have 3950X on the way, hoping it will have better IMC so can run at XMP..

[@ulysseslee9541]

Dual channel RAM appeared very long time ago, during Penitum 4 with E7205 chipset in 2002 & Nforce 415 chipset for AMD Athlon in 2002. How RAM to be DDR & need to have dual channel, coz Pentium 4 period, the FSB(Front side bus) of Pentium 4 is 4 times of Pentium 3, P3's SDRAM is not fast enough for carry P4's FSB bandwidth, so Intel develop RAMBUS RAM for 1st Generation architecture of Pentium 4. Due to AMD commonly use DDR1 by VIA's KT266 chipset, & dual channel becomes the Nvidia's Nforce chipset feature in 2002, the dual channel DDR, using DDR RAM is more common & Rambus RAM too costly, intel release their 1st SD RAM chipset i845 & 1st DDR chipset i845D in 2002, then i845E/G, then i845PE/GE & 848P. 1st Intel dual channel chipset is E7205 in NOV 2002, but it is not common due to it is server product originally and costly. the 1st customer intel dual Channel chipset is i865PE/G/P in May 2003, after Northwood Architecture P4 released 17 months. Once using the dual channel DDR RAM setup, it reach Pentium 4's FSB bandwidth & solve the lack problem and Dual channel memory becomes the standard of Intel's desktop chipset.

[@anonanon3134]

aprox. 10% diference between 1R to 2R, according to the benchmarks. and 30%~60% from X16 to X8

[@biteme3989]

I mean I didn’t even know what dual rank memory was until like a month ago and had put together about 10 pcs

[@Amberion]

Do you feel the urge to go back into all those PCs you built and double check to make sure you populated the DIMM sockets correctly?

[@biteme3989]

Thomas Hood nope they were basically for browsing the internet 2 were for gaming for friends and they worked fine

[@monzitj1]

Let's say you run DDR3 on Haswell or Sandy/Ivy Bridge or AMD FX: you run this config: 2x 2GB and 2x4GB. Is that better than 1x 4GB + 8GB? Also, have you heard of Intel FLEX mode?

[@Anthony99]

Great video! Thank you, was particularly interested in how the ranks sat together.

[@supra9301]

I need someone to teach me about downclocking high speed kits say one has a mobo rated for 3200MT/s and looking to buy ram, prices of the kits are negligible. kit1: 3200 CL14 kit2: 4400 CL19 what are the chances the 4400 kit will get close to the 3200 timings when downclocked to 3200?

[@lautaro736]

Higher ranks wouldn't reduce effective speed instead of the max? For example if i have a 1 rank dimm that can theoretically go up to 4k mhz but working at 3200 mhz in one slot, if i add another one in the same channel it will be 2 ranks so they will work at < 3200 mhz.