pc reboot after gaming or stress test

[papatalok]

my pc specs:
core2duo e8400
emtek gts 250 with 2 6pin
psu rise 600 watts generic
asus p5gc-mx/1333

i use two 6pin adapter connected in 1 4pin molex each
sometime reboots after the temp is 70-75 degree C when gaming
sometime reboots even in temp of 65 degrees when gaming
when i use furmark it reboots before the flame thing appears
my cpu temp is fine 58-63 degrees
i adjust the fan speed to 100% using evga precision x but still no use

 

[RCguitarist]

Probably your power supply is the culprit. It's a cheaply made unit that probably puts out nowhere near 600W.

 

[Matthew-san]

I've had the same problem when I overclock my CPU too high. I had my FX-8320 overclocked to 4.5 GHz but after playing a game for about two hours my computer would shut off and restart, sometimes I got a blue screen and other times my PC just shut off on it's own. I just lowered the speed to 4.0 GHz and now my computer's stable, so far lol. Oh and I also use a 600 watt PSU so I imagine you'll need a slightly larger PSU.