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Is the X670E HERO able to do more than 3600MT/s with 4x32GB?

realies
Level 7

I've read a few posts that state 6000MT/s+ is possible in X670E with 4x32GB and 4x48GB kits.

https://www.reddit.com/r/Amd/comments/159xoao/stable_128gb4x32gb_ddr56000_cl30_on_agesa_1007b/

https://www.youtube.com/watch?v=NtMIppL9UC4

There was also a couple of comments saying the X670E HERO can't get stable above 3600 MT/s with 4x32GB.

It appears that I have the same case with a X670E HERO + 4x32GB KF556C40BBK4-128.

Is there anyone with a HERO board who has been able to run high capacity configurations at speeds higher than 3600MT/s?

Wondering if the limitation we're seeing is because of memory traces design or BIOS that is not optimised enough to allow for successful memory training. I have spent more than a week trying to optimise voltages, timings and impedances but the best it can do is 3800MT/s.

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realies
Level 7

I've seen other threads about this here: https://rog-forum.asus.com/t5/amd-600-series/x670e-with-4x32gb-where-to-start-to-resolve-random-rese...

And here: https://www.reddit.com/r/ASUS/comments/16nclnx/rog_crosshair_x670e_hero_anyone_running_128gb/

How can we get ASUS engineers to look into this more seriously and not use the customer support team to deflect these questions with 'not supported' while other brands appear to be doing much better in this regard?


@realies wrote:

I've seen other threads about this here: https://rog-forum.asus.com/t5/amd-600-series/x670e-with-4x32gb-where-to-start-to-resolve-random-rese...

And here: https://www.reddit.com/r/ASUS/comments/16nclnx/rog_crosshair_x670e_hero_anyone_running_128gb/

How can we get ASUS engineers to look into this more seriously and not use the customer support team to deflect these questions with 'not supported' while other brands appear to be doing much better in this regard?


What is your basis for "much better", though? A few posts? The video linked doesn't show any real stability testing, are we to assume the overclock is not conditional?

ASUS was one of the first vendors to show 192GB working (@ 5200MT).

Correct me if I'm wrong, but the MSI flagship doesn't appear to have any 4 DIMM kits on its QVL, if it was that obtainable you'd think there would be at least a few.

https://www.msi.com/Motherboard/MEG-X670E-GODLIKE/support#mem

Not sure what you mean by deflection and "not supported", but ASUS has validated at least one kit in this density.

Silent_Scone_0-1709559929501.png

If these things were fairly obtainable, memory vendors would bin kits and validate them themselves for the platform, but they don't.

Silent_Scone_1-1709560059536.png

The reality is that AM5 doesn't favour this number of ranks / DIMMs, and requires a reasonable IMC. It's also important to evaluate performance. Once we need to change MRC setting to the point to allow the system to POST, we may have been better off at a lower frequency. Sometimes the landscape isn't always as it seems.

 

Remember, this much memory is a niche capacity, and then we need to evaluate just how many CPUs can achieve a certain frequency. If it were anywhere near enough, memory vendors would be binning kits for AM5.

13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Thanks for the reply, super mod!

To me, much better in this context means the things observed in the first Reddit post and youtube video I've linked to. 

In the Reddit post, from which the video is inspired, we see u/andymetzen being able to boot at 6000MT/s and eventually 6400MT/s with 4x32GB on a Ryzen 7950X + ASRock X670E Pro RS system. They follow this up with a memory benchmark in Aida64, and successful stress tests with LinpackXtreme, and y-cruncher with various workload types (from very CPU, to mixed, to very memory heavy).

In the meantime, the reports for a X670E HERO are they are most often unable to get stable above 3800MT/s, which feels too low for what the IMC is capable of on most chips. I understand that running 4x32GB or 4x48GB is a niche configuration, but I think it does not have to be. With newer AGESA revisions, AMD optimises the way their current IMC performs, improving its initially gauged capabilities, and the upcoming refresh will have a significant focus on an improved IMC.

I think it's worth investigating if there's anything specific to the X670E HERO board or its BIOS preventing it to achieve similar speeds to other motherboards, using the same CPU and memory parts. I hope I'm wrong, but I think there might be something there.