Definitely easier (and my current plan) just to replace the cpu.
It's a 16-core AMD 3950x. I can get a faster 16-core 5950x (which still is AM4 socket) for $340. So not so much about the value.
I just got curious about it. If any of you guys ever tried underclocking as a fix for a flaky cpu.
I was having similar issues with my Ryzen 5 5600X computer.
It started after something changed, can't remember what. Maybe windows update or a BIOS version update. Something along those lines.
Was ready to give up then started looking at various threads online by folks having similar issues.
What fixed my particular issue was 1 setting in BIOS “UCLK DIV1 MODE > UCLK==MEMCLK”.
I also changed my windows power plan from balanced to performance. Not sure if that helped.
Here's link to thread that, if you read through it, has several solutions that helped other folks.
https://forums.tomshardware.com/threads/pc-randomly-reboots-tried-a-lot-but-the-only-fix-seems-to-be-to-undervolt-ryzen-3600.3746273/From this thread here's one person's comment who had tried undervolting CPU:
"Omg, I think I fixed it! 😀 So I've found a post where someone mentioned that default bios settings are not to be trusted, especially for the CPU. So just because the bios sets the CPU voltage to "auto" by default, does not mean thats the real voltage the CPU needs to work properly. So they suggested to instead choose "voltage offset" in the bios.
So I did that, a voltage offset of 0.1v was suggested and lo and behold, I'm able to run prime95 now and the CPU is at full power! I can confirm this by doing cinebench, I'm getting the expected score for a ryzen 3600 at stock! Before that (when undervolting) I was getting 1000-2000 points less on the score, which made my 3600 into a 2600 pretty much. I'm so happy it's at full power now!
To be honest I don't fully understand how the voltage offset works, but it's working! Now let's just hope it stays that way hah. But so far that's the first time the CPU is running at full power without crashes in prime95 for example, before that it would literally crash in 1-2 seconds.
And regarding your suggestion, I do have the newest chipset drivers installed, that was one of the first things I did."
Hope this helps.