Single Core and Multi Core scores of undervolted Ryzen 5 7600x for anyone who wants to benchmark their system.
Pretty stable per-core undervolt applied here:
Core0: -30
Core1: -20
Core2: -15
Core3: -25
Core4: -25
Core5: -25
Package temperature peaked at 75deg Celsius.
You can go for per CCD if you want to fine tune, but this was stable for me on an MSI B650M Gaming Wifi board with OCCT CPU only tests giving zero errors (test was run for 6 hours)