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F4-3866C18Q-32GTZR and X5950 (Zen3) on X570 Asus ROG Formula VIII

Jedimaster
Level 8
Dear all I need help and happy to get any feedback to get the problem solved.

*Changed my rig from x299 Intel to X570 with ASUS ROG Formula VIII and Ryzen 9 x5950 in december. I kept my RAM (4x8GB) from the Intel platform (which was a quad channel platform). I do well understand, that the X570 is a dual channel platform. My original RAM figures are: 3866 with CL18-19-19-39 1.35V Started with setting my RAM to 3600 with CL16-16-16-36 1.345V (worked without any problem on my X299) and FCLK1800 on the Bios firmware from Nov/Dec...mostly it started, from time to time I had a 0D failure from my MOBO. Now I upgraded the Bios to the latest version from Jan (V3022) - but the MOBO didn't start anymore - only in safemode.

So I changed my settings to 3600 CL17-18-18-38 with 1.345V and it started stable...but also getting from time to time a 0D failure. What do you recommend? I don't believe, that the timings are too agressive...and FCLK1800 should be possible I believe. Do I really need to looseing the timings to CL18-19-19-39? Or do I need to change RAM? Considered for example F4-3600C16Q-64GTZN or F4-3600C17Q-64GTZN...both are 4x16GB.

*Any advice is much appreciated. Many gthx. Best regards, JedimasterT
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2 REPLIES 2

Silent_Scone
Super Moderator
Hello,

Q-CODE 0D is memory training.

Some kits may require more voltage due to the guard band put in place by the memory vendor not being adequate for other platforms. You can try 1.4 to 1.45v VDIMM and see if this helps. VSOC may need to be tuned, also.
13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090

Silent Scone@ROG wrote:
Hello,

Q-CODE 0D is memory training.

Some kits may require more voltage due to the guard band put in place by the memory vendor not being adequate for other platforms. You can try 1.4 to 1.45v VDIMM and see if this helps. VSOC may need to be tuned, also.


Hi there, loads of people seeing this issue. I got it from time to time but lowered the SOC and it went. (1.06250). Interested to hear the difference between the memory voltage and the SOC? The memory voltage on my G skill says 1.35? So I am loath to turn this up? I am using F4-3600C18Q-128GTZR on a x570 E gaming strix MB with ryzen 3900X.

I also forced windows to do proper startups by stopping fast startup in windows, and in the bios disabling fast boot. I read that the memory training step was better and could avoid the issue at startup with the intermittent ram light. What do you think?

Thanks in advance.