Unstable system with Corsair DDR4-3200 memory; how should I set it up in BIOS?

[Anon1024]

Hi,

 

I've built a system with these specs:

 

● Corsair Vengeance LPX 2×8 GB DDR4-3200 16-18-18-36 1.35V memory, tested fine

● ASUS Prime B550M-A (official support for CMK16GX4M2B3200C16R at 3200)

● AMD Ryzen 5 3600XT with stock cooler (official support for DDR4-3200)

● Mars Gaming MCK ATX box with 2 12" fans

● Corsair TX850W power supply (should be overkill, worked perfectly for years on my previous, more demanding system)

● ASUS nVidia GeForce GTX-960 that worked fine for years in my previous system

● Running either Debian Linux or Windows 10

 

I've enabled D.O.C.P. to Profile #1 in the BIOS, identifying my memory correctly as DDR4-3200 16-18-18-36-1.35V. I've left every timing option to auto and fan cooling on standard.

 

Running the ASUS Prime B550M-A stock BIOS version 0603, the system ran both Windows 10 and Debian Linux fine, but random processes occasionally segfaulted/crashed to desktop, happening often overnight (computer was left on doing nothing) or at random every few hours, not related to temperature or CPU stress. I've run a memory test for an hour finding no issues.

 

I tried upgrading to the latest BIOS version 1401 and reenbaled D.O.C.P., and this made the system even more unstable, with grames crashing to desktop in minutes or Linux processes segfaulting at random. The crashes seem unrelated to temperature or how long have them been running.

 

How should I configure this motherboard to work with the RAM?

 

Thanks!

[Senosse]

I have the same ram but in 16GBx4 for 64GB total with the asus strix b550 and kept running into issues like this, I ended up having to manually set the FCLK setting to 1600 in the BIOS to get it to post and run stable rather than auto. Outside of that I just enabled DOCP with stock settings. I would take a look at the Ryzen DRAM calculator and try setting everything manually based off that.

 

https://imgur.com/a/iR6YlY3 (The bios image is generic, just showing where FCLK is located for me, yours may differ)

https://www.techpowerup.com/download/ryzen-dram-calculator/

http://www.softnology.biz/files.html