Working on a friend's computer, K62/450 on a PC Chips M599LMR board. Cpu temp in the bios: 73C

Cpu config in the bios was set to auto, which set the Vcore at 2.4V, for a 2.2V cpu. Heatsink is installed with no thermal compound and appears, from the marks on the bottom, to be very slightly dished so that it's contacting mostly near the edges of the cpu. No case fan; 150 watt psu has the smallest, most restrictive exhaust grille, not even circular but a series of offset linear slots. Most of the cables are right above the HSF, almost touching the fan.