Ok so i have i7 9700k (not overclocked) being cooled by noctua nh u12s in push pull.. when i set voltage in bios to auto and run prime 95 tests. Without avx. temps go to like 90 and i checked the voltage being used by cpu in hwinfo.. it shows a max voltage of 1.224 ... But when i go into bios and put put the cpu volts from auto to 1.230v or 1.240v.. and then run p95 without avx.. it reaches 80 degree but after running for sometime it crashes and pc restarts... My question is why? How is it that in auto voltage mode in p95 without avx processor is using a max of 1.224v and reaching 90.. but when i clearly set a manual voltage more than 1.224, which is 1.230v to 1.240v and run p95.. it runs cooler and crashes.. whats the mystery/logic here? Can someone help me understand.