> I’ve played with PBO2 adjustment as I said, but it should be possible to reduce the voltage at the expense of a bit of performance.<p>Undervolting with PBO2 should not decrease peformance unless you have done something very wrong.<p>Ryzen CPUs have limit, max temperature, frequency, power, and voltage. The voltage curve follows a frequency curve so higher clock speed requires a higher voltage. A negative offset in PBO reduces the voltage required for a given frequency. It shifts down the voltage curve. Lower voltage typically means less heat and power draw so you can achive a higher clock speed without hitting temperature, power, or voltage maximums.<p>If your system is stable when undervolting you don't see a loss in performance, generally it improves because you are able to reach higher clock speeds before running into voltage or power limits. The exception is if you induce a rare issue called clock skew at extreme cases that i'm not even sure you can do with PBO2.