Hey everyone, I recently built a PC and updated all my drivers and BIOS, then optimized things a bit. My setup runs pretty cool, with my CPU hitting a max of 85°C during stress tests. I've been exploring undervolting and was able to boot into Windows 11 without issues while testing various PBO settings down to -10. However, I've noticed that at -30 PBO, my system crashes about half the time when loading 3DMark or logging into Windows. This instability persists even when I adjust PBO settings up to -10, although everything runs fine at stock settings. I also undervolted my GPU and it runs stable, but the crashing rate remains. Why can't I run -10 PBO like most others seem to? Has anyone faced similar issues when undervolting their Ryzen 9600x?
2 Answers
Welcome to the world of the silicon lottery! Every CPU behaves differently, and even something as small as -10 can make a difference for specific chips. If you're curious, you could try bumping it up to -8 and decrease incrementally from there. It might help you find a sweet spot without the crashing!
It sounds like you're experiencing some instability due to how undervolting affects the voltage-frequency curve. Even though -10 PBO is considered safe by many, your chip might just not play along due to variation in silicon quality. You could try a method called curve shaping to add a bit of voltage in specific areas where it seems unstable, especially during lighter loads. And if you're still having issues, running at stock settings may not be such a bad idea to maintain stability.
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