Zen 4 B650 Memory Tuning

[igormp]

@aenright

That sounds VERRY promising - @igormp is that an ECC or non-ECC kit - for that matter what and where did you find a 4x64 (or is it 2x 2x64?)

4x independent CUDIMM 6400MHz sticks from kingston, non-ECC.

I left more information on the previous-linked thread:

DDR5 4 dimms on am5 -- what's working, what's not?

Sure, got 4 of those: KVR64A52BD8-64 Keep in mind that it’s a CUDIMM module and a tad more expensive than the UDIMM offerings from Crucial.

As well as in this other thread:

Where are the DDR5 Unbuffered 256GB 64GBx4 Kits?

Finally got it to run at 5200MHz! 42-42-42-82 timings on BIOS 3112 beta. Did a successful y-cruncher run, and I’m now running stressapptest on it to guarantee everything is ok.

Pictures

[image] <a class="lightbox" href="https://level1techs.us-east-1.linodeobjects.com/original/4X/b/c/c/bccb9ace582d1785f94fe7313d1ad34e2a18f464.png…

@aenright

Are you on AGESA 1.2.0.3e?

Yup

sudo agesafetch
:: Searching Reserved region #1 (5123 KiB)...
-> Found AGESA version: ComboAm5PI 1.2.0.3e

BIOS 3112 Beta on my x670e Pro Art