X4 955 BE/Cool'n'Quiet/Prime95 Question

JG Seven

Distinguished
Feb 18, 2010
15
0
18,510
Hello all,

Built my first rig this week (which means I'm a total noob, so please bear with me) and I've been running some stress tests on my hardware just to make sure it's all in working order. Anyway, here's my question: Why is it that I can run in-place large FFTs on prime95 for about an hour and never pass 55C with Cool'N'Quiet enabled, but when I run the same test with CnQ disabled for 5 minutes, my CPU reaches 78C?! All settings (voltages, multipliers, etc) are at default, by the way.