Is 128GB of DDR5 IMPOSSIBLE on AM5? Level1 Investigates!
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- čas přidán 30. 11. 2022
- Check out the forum thread here: forum.level1techs.com/t/7950x...
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AIDA's memory test has a tendency to hit the L3 cache during the "RAM tests"
Also you can literally calculate max memory bandwidth. DDR5-4000 has a max bandwidth of 64GB/s. DDR5-6000 can't do more than 96GB/s
Yes, I should have mentioned that.
Buildzoid , I love it when you drop in with some fresh knowledge nuggets on other vids.
I'm still interested in how to get 2T command mode on am5 I can only get 2T GDM off at 3600CL30 but at 4600CL40 (my pb completely stable) its 1T with GDM on. I thought uneven secondary timings was the answer but it didn't work. Asus support didn't say whether it could be added to the BIOS when I asked
Well, a memory benchmark should be designed large enough to mitigate that. Could it be more like "intel has aida memory test optimizations in its prefetchers"? They do have a tendency to design for popular synthetics, where amd designs of real world use.
@@dgo4490 actually right now AIDA is most inaccurate on AMD. The infinity fabric at 2GHz should have a max bandwidth of 64GB/s.
Amazing, now server-grade boot times are a reality for desktop.
I mean, slow booting has always been an option
for the first time in decades IBM now has competition for 1st place as the slowest systems to boot..... "great"
@@TommyApel I thought their petite boot was supposed to be comparable fast? At least that is what I heard for the Power 9 platform, and I would expect it is the same or better for newer ones.
@@myselfremade 5 to 10 minutes? That's Windows-XP-on-a-Dell levels of slow booting
@@Aegor1998 not really, IBX ThinkServers are by a long mile the slowest servers to boot that I've ever had the displeasure of working with, it was at the point where you started looking for your car keys to go to the datacenter before they came back online, next after those is HP which are also ungodly slow to get through post especially if you have raid controllers.
GLAD someone is talking about this! There are a lot people wondering why their 4 slot memory config can't run DDR5-6000 on AM5.
And not just for AMD!
AM4 do the Same. Its normal.
@@NetrunnerAT That said 128GB 3600 DDR4 was running very well, unlike the new DDR5-6000 "sweet spot"
@@ChatGTA345 AM4 do the Same. I use 4000 128gb Kits and with two Sticks i get this Speed, But If i use 4 i get only 3400. This is normal ... Nothing new 🤷
@@NetrunnerAT Yeah I'm not arguing, just noting that I ran 3600 with AM4 and that was rock solid and top-tier performance, unlike with AM5 or Z790.
3:00 I've experienced this on countless DDR4 boards in the last few years, _especially_ in the ITX space. Have to not only push down, but help it in place by pushing the latch closed.
same. went small board this time and had to reseat the ram because it wouldnt post even though it "clicked."
i HATE it ... makes me feel like i'm going to break the board/chip and I double check the orientation at least 3 times
@@derekp6636 Yeah the crunching sounds of the slot is always unsettling, and I build 8 or so systems a month. Unfortunately getting them backward is still a problem, since it's fairly easy to miss which way the key is oriented if you're not careful, and given how close the key position is between DDR4 and DDR5, it's also easy to think you've got the correct type of RAM when you may not, as well, so even more care is needed. I know they didn't really have room to move the key very far, but it would have been nice if DDR5 did differ a little more vs DDR4 in connector appearance. Would have saved one client who brought an in-progress build to me, since they tried shoving DDR4 into a DDR5 board and ruined the board. Luckily the RAM was undamaged.
@@bjn714 they REALLY should have gone to double key DIMMs. One in the middle, and one close to one end.
@@myselfremade yeah, would be nice, but they'd have to divide the data bus segments to do so, and for signal integrity reasons this was not done. A new PCB design that was either longer or shorter would have been the true ideal, solution, but alas, $ talks, so here we are.
Gskill's SKU makes sense and instantly tells you a lot about the product. F5 means DDR5, 6000 is the rated speed. 3040 is the first two cas latencies of 30 and 40 32gx2 tells me that it is 2 stick of 32 GB stick Tz5n means it is trident z with Expo profieles where as TZ5 whithout N means it is XMP profiles. The lack of a K or S means it only comes in one color way
Jesus Christ why do I need to know that in the SKU name? Should AMD rename their 7950x to 7950x16 in order to tell you that it has 16 cores? If the product name can tell you what chip the ram is actually using, that would be much appreciated because Amazon or Newegg pages pretty much never state that.
@@Sebyllis7350k that is too much information to shorten further. And every bit is relevant. If you only care about the speed and capacity, just search for those. For guys like me, knowing that actually helps alot. I'll always remember what Maheer said now.
This is a great video! Thank you for talking about this, and for talking about the ddr5 inserting issues.
Running a VFIO setup on Ryzen 7000 with the iGPU as my linux display out and 128GB. 4200 stable is the most I can get with my RAM (corsair non EXPO kit). The newest UEFI really helped stability with my MSI board. There's a long way to go. Thanks for putting in the work Wendall, keep fighting the good fight!
Have you tried passing the iGPU through? I've been trying since I got my processor and gotten absolutely nowhere.
@@CycahhaCepreebha I haven't tried it myself, but I believe this is down to IOMMU groups, is it not? Curious what chipset you are running? I have heard that the 650 boards have awful iommu grouping that makes it impossible.
@@TheGreatSpiff X670E ProArt. The IOMMU groups are actually great, everything I can imagine wanting to split apart is split apart. The iGPU is in an IOMMU group it shares with some audio device I'm assuming is HDMI audio.
As it is I can boot a VM and detect the iGPU as an AMD GPU, but the driver refuses to bind to it no matter what I do.
has difficulty hitting 4800？ add voltage to mc to see if that help.
@@CycahhaCepreebha no I have not
They really should reinforce the RAM slots and make it so RAM sticks can properly insert themselves into the slot without having some janky thing where it doesn't fully click into place. When inserting RAM you're putting a lot of pressure on the slot and RAM sticks, which feels like it's gonna break.
Even on generations before, inserting RAM could be feeling pretty sketchy sometimes - so hearing this about DDR5 has me a little worried lol. But I'm sure manufacturers will figure it out sooner or later, just how they'll have to figure out more resilient PCIe slots.
Yeah - Probably not a good idea to reseat them when the motherboard is in the case on the standoffs ...
Boards are wildly more expensive and more cheaply made what a joke
Wonderful presentation. This is the first video of yours I've watched and it is a breath of fresh air. I've seen way too many channels where the speaker has no script, has not idea what they will say, and half of their presentation is them correcting themselves or not saying anything at all.
Good thing I bought a single dual stick kit of 64gb 6000mhz for my steel legend, as opposed to two.
Phew. Thank you Wendell, answering a burning question I've had for the last few days. ❤️
This is information I wanted to know and couldn't find elsewhere. Great video.
Thanks, Wendell! Hopefully things will continue to to improve with the X3D chips and the eventual Zen 5 series.
I have to give you some praise on your camera quality and your lighting!! Watching on a QD-OLED is amazing! I wish more youtubers would step up the game! Great job!
The content I have been waiting for. I always want to see how far can these platforms go with extreme memory size. Finger cross and see if Buildzoid will also test 128GB on AM5.
Thank you so much for uploading this. This is exactly what I was concerned about for my new build.
I can't thank you enough for the heads up on the memory I would been waiting for that snap in sound.
I'm hoping that Zen 4 with 3D cache will, as the 5800X3D did, ameliorate the performance impact of slower memory, and thus allow for highly performant quad rank setups.
If AMD isn‘t releasing a 16-core 3D SKU this time around I‘ll be pretty pissed myself. Remember that 5900X3D sample Lisa Su was holding into the camera over a year ago? Let‘s hope Intel can put the competition pressure back to AMD so AMD stops acting all Intelly circa 2013. :(
Honestly I would get a 3D Vcache version if that means I can run slower ECC ram since you could get the best of both worlds: good stability and good performance.
3D Vcache would even help out a bit with power consumption since main system memory can be accessed less and clocked lower making the whole platform more attractive. Fuck the responsible product managers.
You don't need 7950x3d. It's a productivity chip. It already isn't that great for gaming so the cache wouldn't be that helpful. The only chip that makes sense for gaming in a practical sense is the 7800x3d. If you do work just get the 7950x as the 3d version isn't going to be any better. The productivity applications won't benefit from the cache. If AMD even makes one it won't be anytime soon.
It is not wise to project your own computing demands on other people. Not everything revolves around gaming and there is a reason AMD released a few Milan-X SKUs but only a Ryzen fig leaf. And that reason isn’t that AMD is looking out for its lower tier consumer platform wanting to help customers not accidentally buying a 3D CPU that’s a bit more expensive than the non-3D counterpart.
Top shelf reporting 👍
Thank you Wendell
Would love to see videos like this for server level hardware to see how performance changes based on timings, chip density, number of ranks available per channel, and etc.
Thank you for this testing! This is a lot of work
i like the tips about putting ram. it's really very helpful 💜
Aw awesome! I was just looking for advice about this topic yesterday. I can't believe with the newness and pricing of AM5 motherboards, the IMC is such a problem. For now I'm going to go with a B650 (why 670 with the same iffy IMC?) and only 64GB. Sadly, going to Intel for 128GB seems to not really bring much benefit. Ya, I'm poking at you Intel also.
I would LOVE to see this video for the Z690 or Z790 platform with the new 13th gen processors. I cannot, for the life of me, find a comprehensive overview of what one can expect on those platforms with 4DIMM configurations.
I think 128GB support needs time to mature. In the end we're talking about consumer boards and board manufacturers will test RAM and optimize UEFI settings for the memory configurations which are around the sweetspot for consumers, so 16GB or 32GB in total.
And Intel has the 2nd gen CPUs with DDR5, so it can be assumed that they have improved the IMC in Raptor Lake compared to Alder Lake. If I remember correctly, early adopters had also issues with DDR5 compatibility.
So let's wait and see what AGESA and UEFI updates bring in the future.
First build 13900K 128gb Corsair dominator platinum 520hz. Evangelion z690- no problems 4800hz out the box. Can’t get xmp to work. 🤷🏼♂️
Well it's not just 128GB, it's 64GB if you're using 16GB DIMMs
@@thepopeofkeke this cannot be true unfortunately, I suspect your settings are unstable. Even 13900K cannot run 128GB stable greater than 4200ish, all manufacturers tried and failed at it
I had similar issues getting just 64GB of DDR4 4000Mhz running even XMP on my x570-ryzen 9 5950x setup. I eventually got all 4x dimms running at 3733mhz with an fclk of 1866 but it was a pain in the ass with a lot of testing and restarts and instability.
The video is interesting, this “next room approach” is actually practical in most homes. I used to think that water cooling was a necessity for a Silent Gaming PC / Workstation until I tried positive air pressure (inside the case). With positive air pressure and enough high-quality fans in the proper orientation and a good enough case you can enjoy a silent PC with near water cooling temps (less than 60 Celsius under load). I use Arctic 120mm fans, they won’t go above 1000rpm often, and they are not expensive like Noctua fans. In my personal experience the Best orientation for air is top to bottom with PSU fan facing inside the case (as exhaust fan), and front to back with a WS case (with 3 front fans). Even blower style GPUs get cooled efficiently because of the fresh air being pushed / moved constantly inside the case. The key is to have more / faster intake fans, and less / slower exhaust fans, and not to have conflicting / opposing airflow; this way the air moves quickly and the fans don’t have to spin up to higher RPMs.
You are one of the first to address this important issue 👍
Excellent tips thanks Wendell.
Thanks for addressing the 13900K since that would have been the next question. It can't remember a time when the memory technology was that far ahead of the memory-controller technology and this is Intel's 2nd round.
ikr 😢
AMD and Intel really don't want you to use consumer chips for workstation work any more.
Have they ever? The real issue is that HEDT are now utterly unaffordable. I remember when the i7 920 was common.
@@Bayonet1809 Having to shell out 2k+ $ just to get more PCIe lanes is moronic. We have multiple PCIe slots but can realistically only use 1 maybe 2 of them.
Worst thing is that it's kind of blatant what they are doing when only giving us 24-28 lanes.
@@Yock1980 I like how Asus does the PCIe setup on their WS X570 ACE board, it really helps out in terms of expanded PCIe capabilities (at the cost of some extra latency I'm sure)
I'm currently running 128gb DDR5 at 4600mt/s with my 7950x. They are two 2x32gb kits of corsair CMK64GX5M2B5200Z40 (5200 mts c40). Those kits were pretty cheap compared to most lately and probably still are today.
That's the max I was able to run them on both an Asus proart creator wifi x670e board and an asus prime x670e pro wifi board. Both running at docp profile 1 and setting the target frequency to 4600 (no other tinkering, using the latest bios which you do need to update!). Above that it won't boot.
Not officially supported but I think its the most bang for the buck 128gb configuration I could find. Hopefully this info can help some people. Maybe I could manually OC to squeeze a bit more but I've read of instability issues so I don't bother with it.
I might upgrade in the future when true 4 stick kits become supported, available and affordable. Imo buying more expensive ram than my config is just not worth it as it's pretty clear something much better will come along eventually and you're gonna need to upgrade anyway, even if you splurge for the higher end ones now. I kinda also doubt the current kits will get that much better support through bios updates as many manual OCers have tried their best to push them to their limits in 128gb configurations with no success. I don't think a docp profile that actually can get them to their rated max speed is even possible.
Thanks for this great video. Wish this video was available when I made my build, it would've saved me a ton of digging in forum, trial and error buying the wrong things, and tinkering around in the settings. I'm sure it'll help out a lot of people.
Ps: my boot times are very fast now, once the first boot was completed. The memory training time on first boot is always very long, and annoying since you never know if it will eventually succeed or not. If you follow my config you should have no problem matching my results easily and get a very usable working 128gb setup at a somewhat decent speed. Cheers y'all!
Pps: heard the expo version of my kits currently have a bunch of issues, my local shop has stopped carrying them. I recommend you get the regular xmp version like me.
I had 32gb ram and I double to 4 sticks so 64gb pc was stable for days speed was 5200mhzt then got a blue screen heard if u reduce the speed should be fine, so I reduce by 200mhzt running at 5000mhzt gonna see if it works, but two sticks even at 6000mhzt is fine.
What voltage are you running the sticks at?
I was running 2x32 blades of Vengeance CL32 6400Gbz at 6000Ghz with no issues. Today added 2 extra blades and my hell started. Updated the Bios before installing them. Got them recognized at bios, boot, and no POST or windows Anymore. I was only able to see the bios again removing PHYSICALLY the 2 new blades. So i see the BIOS, was able to down the speed to 4000Mhz, put the blades again, and finally it boots. (But it took me some hours in the process of trial and error. And Having to remove the blades each time to see the bios is a nightmare. Now i am running 128Gb at 4000Ghz. Gonna re-read your post and try to squeeze more of it.
I have the XMP version (F5-6000J3040G32GX2-TZ5RK) and 7950x. Was hoping to upgrade to 128GB down the road. Hopefully future AM5 CPUs will have a better IMC to support DDR5 6000 with 4 DIMMs.
64GB DIMMs would probably be easier
you just saved my sanity with this video... as it has been a few years since i last built a machine, i would never have expected the limitations we currently face with 4 DIMMs. 10minute Boot times? No freaking way... but yet, here we are.
Got my 128GB to run at 3800MHz, will have to see if its stable though.
Thanks for the great contetnt, did you already test ECC-Memory with Ryzen 7000?
Remembering first generation Threadripper, and it was almost a year before we had good bedded down memory. Starting from a better place this time, but still a long way to go.
Recently I built a 7950 system (Asus x670e ROG Crosshair Extreme) for a deep pockets client. He ordered 128gb of Corsair Dominator Platinum RGB 5200.
With all 4 sticks, it would never run more than 3600mt/s, and took 20+ minutes to train/post.
With just two sticks, it would hit 4800mt/s (still not the 5200 advertised), and enabling manual DOCP would refuse to post even after an hour of training.
We were both a bit confused and upset. He currently decided to stick to the 64gb.
"still not the 5200 advertised"
Cause NONE of the memory those brands sold is official DDR5 5200/6000/whatever. They are all overclocked, way different timings, way higher voltage/power.
Right now we are just seeing the first few JEDEC 5600 kits arriving, 5200 for a bit longer - but JEDEC 5200 means 38 CAS and 1.1V. But most memory that you can get is glorified overclocked DDR5 4000-4800.
@@ABaumstumpf I understand that JEDEC is all that's guaranteed. However, they advertise DOCP at 5200, and the set was on the QVL for the mainboard, so in theory it should work, and was advertised to do so.
thans for making this vid. very informative. When i decide to build my system I'll be stikking with 64gb as for me the 7900 only igpu is enough same motherboard
Very informative video! What's the CAS latency like though?
For example, would 4x32GB of 6000MHz CL30 sticks run at CL16 once reduced to 3600MHz?
I bought used B350 motherboard with 1700x, that had pretty old bios and 2666mhz Adata 4x4gb kit. I could not make it run at 2666. 2400 had stability problems and only 2133 worked fine. After bios update it could easily run 2666 and then when I upgraded to 3200Mhz kit it also run fine at 3200Mhz without any issues, so a lot of memory problems on first ryzens was solved by bios updates. I also think that memory manufacturers had to learn "AMD" again after being abandoned for a while. It was a lesson for both - motherboard and ram manufacturers to get back into AMD and make some compatibility tuning. I don't know how it was before, but now I even do not have to tune the Infinity Fabric. It always automatically sets itself to 1:1 ratio with memory.
Wish I saw this video first before buying 2 pairs of Corsair Vengence 5200mhz kits for 128gb total. Luckily I didn't buy high end ones, which would have wasted the chip speeds. On my MSI PRO X670-P WIFI with 7950x I was able to get a stable 4600mhz - it passed two PassMark memory test runs. 4800mhz posts and boots, but fails memory test. 5000 and over does not post and need a CMOS reset (or take out two of the chips to boot and change bios settings)
Thanks for the insight. Fresh build on an unfamiliar asrock board had me going crazy. All makes sense now. 👍🏻👍🏻👍🏻
Great vid! Thank you!
Thank you for saving me cash as I was definitely going to buy 128gb. You got yourself a new sub.
My asus x670e gene has been a champ. Boot times are slow but i honestly dont mind. I turned on the auto memory thing that checks timings every boot on purpose. Which is weird because "disabled" means enabled and "enabled" means its disabled. Out of the box it was on enabled meaning auto memory was off. Thus first time I booted it was just like am4, instant on.... But i like the feature to check timings and make sure its running right, so I "disabled" the thing in the bios which enabled the longer boot time.
Thanks Wendell! I wasn't sure if I should go 2x32 or 4x16 when I do my next build. That settles that!
I ordered 4x16 if I understood correctly 2x32 is better?
@@milosavpavlovic7548 2x32 is better but it would need to be dual rank
Thanks for this coverage. The main reason I haven't upgraded to a new platform is I want reasonable speeds at 128GB. Had been leaning towards Intel DDR4 since there are several motherboards that have QVL 128GB at 3600.
I really wish this situation was better for either platform. Rn “upgrading” from AM4 128GB to Z790 64GB :/
May I ask respectfully what it is you do that benefit from RAM more than 64GB? Out of curiosity.
@@penguinbelly For me at least it's a lot of software development work, which needs surprisingly quite a bit of RAM, incl all the browser tabs and microservices spread among multiple projects
@@penguinbelly workstations for rendering and power users with home/small businesses servers (video, XFS, etc). I can’t see why you’d need it for gaming or most other applications.
Gone through the same pain with 4x 2R DDR4 sticks on dual channel platforms. I think high end consumer is long overdue getting an upgrade to memory channel support and should go where low end HEDT platform was.
I'm not sure there is actually much that can be done unless you go to something like dual sockets...
@@rkan2 He means bringing back consumer Threadripper / X299 platforms. Quad channel memory.
Ahh this sucks.
I was hoping to upgrade to a 7x00X3D system with AVX512 and 128GB 6000 ram. But that looks unlikely now.
What do we know about the ecc capabilities of ddr5? Is it any good?
I built my new rig in October with a 7950x and 4090, I have 4 x 16gb DDR5 6000mhz RAM, it's the Kingston Beast EXpo Ram.
I have been having very slow booting and occasionally (once a week or so) it won't boot at all and requires a CMOS clear to get into Windows.
The machine is an absolute beast when in Windows and running well and it holds 6000mhz without stability problems but these little annoyances with booting etc do get old very quickly, for example my old AM4 system booted into Windows in less than 5 seconds, I'm closer to 45 secs to 1 min with the new machine.
I wasn't aware that 4 DIMMS could cause an issue with X670, wish I'd gone with 2 x 32gb kit now.
I will try to remove a couple DIMMS and do some testing, see if the boot times and stability improves, thanks a lot for bringing this to light, not a lot of people are covering these topics
I think this should be revisited soon with all the recent updates
Interesting! I did seem to notice RAM was a little harder to "click" into place than DDR3 was on my server (last memory I upgraded outside of SO-DIMMs in laptops).
I recently built a new computer with a Ryzen 7 5700X on an ASUS B450M motherboard with two identical G. Skill DDR4-3200 32GB kits and ran into the same thing. The spec says 2933MHz maximum for four sticks of DDR4. I was able to get the system stable at 3000MHz, but some of the memory timings had to be set very loose, and it took alot of tuning to even get the 3000MHz going stable. At 3200MHz the system would absolutely have tons of memory errors, regardless of timings, and sometimes would not even POST. I'm guessing DDR5 is even more finicky due to the significantly higher clock speeds.
Thanks for the video. You've confirmed what I though was the case here with my computer: The memory controller is simply not up to the task of being overclocked with four sticks of RAM, even single rank.
thanks for this I want only 64GB but fining it hard to get 2x 32GB so was thinking of getting 4x16GB but after this Ill stick it out till a 64gb set is in stock thank you
Some people have told me that they could get the 5600 Trident Z kits to run 128GB stable by first letting the board and CPU memory train with 64GB, and then later filling in the rest of the 128GB and manually setting the speed to 5600 with auto on voltage. This was apparently with a Gigabyte X670E Aorus Master board. The kits they were talking about were the ones without EXPO, but labeled as Hynix within the Aorus Master's own QVL list page.
I can't run 5200mhzt on 4 dims ddr5 on a x670e hero with a 7900x, 4800mhzt works fine on 4 dims
Running a 7700x on Aorus Elite AX w/ 64GB Corsair Vengeance RGB at 5600. Bios is latest (Dec '22) and haven't had any issues yet.
Please tell me I'm not the only one chuckling at the irony of a board called the Steel Legend being made up of mainly plastic 😆
The all new ASPaper Plastic Legend :D
it's Asrock, they have decades of consistent mediocre-to-poor quality and reliability on their record
That MB that he mentioned was mostly plastic was the Aorus one, he just happen to put it on top of the Steel Legend Box.
My experience with modern DDR4 and DDR5 has been a pick one of two. 1). Lots of RAM at lower speed and higher latency. 2.) Some RAM at high speed and low latency.
Yep, unless if with DDR4 you want to spend a good amount more money then you can somewhat get both, but usually its not worth it
@@MrMaddog2004subscribe Spend money to get better what ? Memory ? Motherboard ? Isn't this mostly a memory controller limitation ?
@@Winnetou17 RAM binning is a thing, RAM that's running on the edge won't be stable even on the best matured CPU/Chipset
You did a video on the ASUS Sage wifi and threadripper pro? I cant find it..
Im struggling to decide on Ram for the holidays, had the system about 6 months now. Settled on 1tb 3200, thinking RDIMM, but iffy about going quad rank or octet rank. My thoughts are Octet rank will be better overall even on small loads since the system has 8 channels. Any advice is helpful! Thanks
Pretty much all of the ASUS memory QVLs that I've looked at for both Intel & AMD DDR5 boards currently only have 2 DIMM configs listed.
Wonderful video. The following are 2 - 4x 32gb ddr5 memory kits that are on Amazon :
SABRENT Rocket DDR5 128GB U-DIMM 4800MHz Memory Kit (4x32GB) for Desktops and PCs (SB-DR5U-32GX4) this kit is $799.96 and A-Tech 128GB (4x32GB) DDR5 4800 MHz UDIMM PC5-38400 CL40 DIMM 288-Pin 2Rx8 1.1V Desktop RAM Memory Modules - this kit is $679.99. Maybe having 4 matched dimms might do a little better. I have 128gb on my current system ( AM4 ) build. At the time I put this together all of the parts were the best for there respective class - since then newer updated parts have replaced my parts as the best. The RX 6900xt was the best gpu class for gpu's from AMD now there is the RX XX50 replacements. Maybe the lack of a central memory controller might be a part of the issues at the moment.
Can you please do memory intensive benchmarks for 128gb running at 3600mhz (AMD Recommend level) and compare with 5200/6000?
The bandwidth speeds you mention do sound so low. Are these single core bandwidth or is that the real limit of the full multi core bandwidth of the chips.
I am sitting here with an M1 Max MBP im thinking my single core bandwidth is 2x that let along the multi core bandwidth.
For AM4 boards I only had troubles with ASRock, never issues with other brands. I had a b350 fatality with a 1700, and a b450 fatality with a 3600. Both motherboards wouldn't go over 2800mhz ram with 3600mhz sticks. Then I grabbed a b450 Asus board and put the Ryzen 5 3600 in it, and the ram will OC to 3800mhz with same timings as 3600mhz.
I also want to upgrade my AM4 3600 64GB (2dims) to 128GB 4dims. Are you saying I can expect problems with that ? 🤔
If I had to choose a board manufacturer based on what features they offer I would go with MSI.
Their Memory Try It is awesome and they put debug LEDs even on budget boards.
For me their boards are just king of trouble shooting.
It would be nice to know how 2x32Gb + 2x16GB would work.. I'm in the process of collecting parts for my new PC, but 2x32GB kits are out of stock. It's really tempting to pick up 2x16 to get it up and running a week early 😅.
Sry if I missed it in the video but does this issue happen if you get a single Rank memory kit? dual rank kits seem to have always been less cooperative in these situations.
Thank you for this exact video.
I was just about to put together a 7950x ASUS Hero X670 and 128g of trident Z Neo just like this for a new workstation. I'm glad i'm holding off. My 5950x is running 128g nicely and i'll just wait a good while
Why would you need 128gb with a 16-core processor?
@@DerekDavis213 large RAM disk for converting movies without killing your ssd or waiting for spinning rust
@@DerekDavis213 AVID media Composer. it uses most of it. Use lots of single core application that preferer high clock speed instead of threadripper. My 4090 does more workhorse than the 5950x :)
@@nathanlowery1141 An recent nvme ssd can read and write at 7000 megabytes/sec.
An Intel Optane drive has very high performance, for smaller queue depths.
How much faster could a RAM disk be?
@@vortexsophia You are using AVID? And I thought that all serious editors use Mac and Final Cut?
Just kidding! Mac is overpriced garbage.
Reminds me of getting some Trident Z running at 3600mhz XMP T1 or is it called N1 now... across 8 dims on my Zen 2 TR. I had to increase voltage to the memory controller. They run the controller something like 1/4 or less rated max on Zen 2 stock. I bumped the voltage somewhere around 50% of rated max if I recall 1 step at a time until it post and that was all it needed. I wanted 64Gb on a budget so I got some Intel non RGB RAM but it had tighter timing than all the RGB 3600 kits for AMD and its Samsung B die but it was a LOT cheaper, not even locked up in the case. If I reset my BIOS or preform a firmware upgrade it takes a good minute to relearn the RAM and it takes a few boot attempts but once it post 1 time it always runs stable no problems. Im not sure how major the changes are on Zen 5 or how much the bumped the voltage to run DDR5 if using the same controller but bumping that voltage might get it going and possibly at higher speeds as long as its a DOCP or XMP profile and at a command rate of 1 if its good ram.
The IMC is underbuilt for that much work, the good thing is it is in the IO die,so a simple revision of that would suffice to improve things, no need to fiddle with the core chiplet whatsoever. Remember, zen was and pretty much still is a server design adapted for other use.
I have 4x16GB running at 6000 MT/s CL36 on my 7950X. it's actually 6200 MT/s ram, but i downclocked using Memory Try It for better overall timings, and auto:1:1. I did have to lock uclk:memclock to 1:1 in the bios manually.
I did use memory that MSI listed as QVL'ed for four sticks. (MSI x670-P Pro Wifi)
Yeah, it seems like 4 stick combinations are much easier with 16gb rather than 32. Glad its working out for you! Not sure how 2x32 compares to 4x16 tho
Be sure to reference the DDR5 spec when talking about this. Section 10 talks about the speed bins and what you should be seeing, all the way up to DDR5-8400.
There’s a typo on your hoodie. It should say “…your computer, Linus.”
I had an issue, which I think is a memory issue, running 4x16 @ 6000 with G.Skill Z5N Neo even though the kit is listed for the motherboard as compatible. With 2x16, it seems stable. With 4x16 it was stable for a while, then because BSOD chaos @6000. I never had an issue running DDR4 @3600 with 4x16 and an R9 5900X.
Great video! Quick question. I'm currently running AM4(R53600)+4x8GB DDR4 @3200, and I'm going to platform upgrade (GPU, PSU, MOBO, RAM, CPU) later this year to AM5(R77700X)+4x16GB DDR5 @6000 (F5-6000J3038F16GX2-TZ5NR). Do you think I would be able to run those 64GB (4x16) at 5200? Motherboard will be GIGABYTE B650 Gaming X AX. I'll also be building a PC for my girlfriend, same memory and CPU, different motherboard: GIGABYTE B650M AORUS Elite AX as she wants a smaller tower, so, I'm getting small form factor and small case
Was wondering about these DDR5 memory stuff, which is the best value Z690/Z790 motherboard to overclock RAM and also run high-end 32GB (16X2) DDR5 7600 CL36 and above kits?
So will this be solved by motherboard revisions, BIOS updates or new kits of DIMMs or a combination of all of these?
One reason that I've Always held the sticks down After the click and manually pushed the clips into place. I've had so many instances of sticks going in slightly off and not wanting to click.
I would suggest enabling spread spectrum if you end up with dual-rank memory side-by-side to help stability.
How does this help though? The same clock to both modules gets modulated.
@@chrisbradley9607 By somewhat blurring the signal of the modules, the read and write cycles can be written to each chip without having to worry about directly affecting the chip on the next board next to it by writing at a similar frequency. Think of it like being slightly off-key from the wine glass so it doesn't break, only electronic.
@@erickcoutsii9499 I understand how SSM works. However, what I don't understand is how it makes any difference since the same PLL generating the modulated signal is fed to both modules. They are both fed the same modulated signals so there is no difference. Doing SSM on a per module basis would create intermodulation beat frequencies. Also, SSM is typically not for signal integrity but reducing quasi-peak emissions.
I wish you would provide a 'link' to your printed text story when you cite them. Thank you for this informative video...🇺🇸 😎👍☕
Flashback to the X370 days when dual rank vs single rank memory sticks was a hot topic.
Has any changed regarding this matter? Has there been a bios update that makes it possible? Is there a new mem controller on the 9000 series that make 128 GB at 6000MHZ possible?
It’s probably due to physical signaling that DDR5 doesn’t clock as high when you have two DIMMs per channel. On the server side, for similar reasons, you have to use registered (buffered) DIMMs when you put multiple DIMMs per the channel to reduce the physical load on the memory controller.
Using more than 4 ranks was a problem in any RAM generation since SDR. That's why you should avoid dual rank RAM if you want to add more later.
I'm really hoping my memory issues get sorted. I can't even enable expo without my system just not booting on the g.skill 6000 Samsung kit.. do you have the Asus x670e-e? Please do some tests for me with 32gb 6000 lol.
Could you please address the same issue with Intel? The situation doesn’t appear to be any better over there 😢
High speed links like memory and PCIe really seem to be making life hell for platform engineers, lately. DIP-socket SRAM and ISA, SIMMs and PCI, DIMMs and PCIe. Every time they start hitting a wall, they change up the form factor. I wonder what comes next.
Flush mount sockets rather than slots help. This is Dell’s DDR5 laptop standard, and nvidia’s gpu socket.
After that it’s cables.
8:00 "It was clocking faster on Ryzen 1000 and 2000 series..."
Nope, you are mistaking on that. I owned a 1700x and never was able to clock my memory above 2900MHz on the first AGESA BIOS update. It was fixed after around a years. Same thing will happens as AGESA update are going to drop.
I'm shocked its working, but I'm running a 2x16GB kit of G.Skill DDR5-6000 CL30 in the A channel and a 2x16GB kit of G.Skill DDR5-6000 CL32 in the B channel with a 7900x. With EXPO set its actually running all 4 DIMMS at 6000 CL30. Its passed the stress tests I've tried and I've been using it for almost a week now without any problems.
Check your actual bandwidth, though. I've got four sticks of 2x32GB-5800 running stable at 6000, but the actual bandwidth isn't much better than running them at 4000, which is probably because the fabric downclocks to relieve the memory controller. Worse, because of whatever is happening in the background, my cache performance also suffers. Depending on your workload you may not actually benefit from running the memory at those speeds.
4x16GB presents similar strain to the IMC as 2x32GB, so your achievement is no better than Wendel's here.
Not sure If this relates: I have a lenovo legion 5, 4800h laptop with 64gb of ram (i know not the same as am5 at all but stick with me). For the longest time I thought my sticks were bad because I would get memory corruption. It was actually something to do with the IGPU and switching between Linux and windows. Something was not getting reset! If I went from Linux to windows I would get BSoD.....then memtest would show issues too. My theory is that between boots the igpu was still holding onto some of the system memory....it wasn't being properly released. Enabling/disabling the igpu....different Linux distros....different ways of rebooting (doing an actual power off vs rebooting) all yielded different results in memory stability.
And before you ask.....this memory could go through an entire 24hrs of memtest and not have problems. It was 100% not the sticks themselves.
Which board was most flexible / successful with the memory?
Ill be trying the 64GB (2x32GB) of Trident Z5 6000mhz CL30 on a 7700 system shortly. Really happy they launched with non RGB variants.
oh they did? I couldn’t find a retail kit recently
@@ChatGTA345 yeah just got it during Black Friday for a build so glad I don't have to get RGB I can't turn off
@@profosist Haha nice! I'm building one now also, but wanted to get non-RGB perhaps cheaper because I'll put it under water
Any updates to this?
I wonder if the instability occurs at certain temperatures.
I stayed DDR4 for 12th gen intel (12700KF), and once the sticks are around 43-43C, I have weird "exits". I say "exits" because Windows NEVER crashes, it is apps just turning off, often times with not even an error caught. Games, tests, even the log-in window just dies and you cannot log-in.
Much better with 2 sticks, but also, colder with 2 sticks (more space and flow).
My work machine is a 3850X. Same modules, 4x 16GB, stable with linux 24/7. Gaming PC with Intel is sketchy :( ...
also on intel case...its the best for any memory it supported ...it can run 2 or 4 lanes ...due to awesome quad memory controllers ...but i think they put each one per dim slot to maxmise the bandwidth and reduce latency as well when each dimm have its owned controller that tend to need 4 VRMS vs amd only 2
No, both amd and intel have 128bit ddr bus, no difference in wiring
There is 1 memory controller on either AMD’s or Intel’s CPUs.
I have been running 4xdimm on 1700x with asus strix-f x370 @3200 with CL 14 .. and with was working like a camp ;) will you do update with new bios ?
I think the problem lies in these areas Power Available, Heat produced that builds up in the Chiplet package and bandwidth and timings that the memory/board(Build Quality&Chipset) & CPU can successfully communicate in. No point AMD running 4 DIMs to the max if your getting errors then having to repeat cycle or worst crashed system.
Disappointing given the presume potential of a 7950x rig to replace those people with a Threadripper 2950x at a "decent price point". Yes the DDR5 RAM is crazy expensive as are the highest end motherboards. In time prices might fall, UEFI might mature and imorove on these current and future AM5 motherboards?
I bought my x670e (asus) back before 32 GB expo dimms were available so I'm running 4x16 GB gskill 6000 MT with 30 latency and it is actually stable if I use the built in EXPO profile fully (not EXPO 1 where asus overrides some settings), although I want to switch to 2 DIMMs at some point since I think it would be better performance?
With the latest Bios Update for my Asus ROG X670E-E and a 7950X, I am running 4 Dimms for 64GBs at 6200 MHZ without any issues (Corsair Dominator)
What ram do you have ???
Janitor right? That's how you refer to your role? The Keymaker feels more suitable :-) Many key questions answered in one go, for other channels it would be at least a dozen separate videos, for each motherboard, for each set of memry sticks and so on. Thnx.