Im running an athlon 64 3400+, using a 120mm cpu fan, and 4 80mm case fans. Normally idles around 38c for my cpu temp. The past 2-3 day though it has been idling around 50-55c. Often it will jump upto about 70c underload. Anyone any clues what can be the cause??
I've checked the fans, all are working fine, and the fan speeds are still upto spec.