Hy ppl, I'd like some advice here.

I'm trying to get stable on air (TR Ultra 120 Extreme lapped and the Q6600 lapped too) above 3.6GHz.

With 3.7GHz (463x8) I can Prime almost 2 hours then system reboots. With 3.8GHz (425x9) it instantaneously reboots when Prime starts.

Temps on the Q6600 @ 3.7GHz are ~75ºC @ load so I think it's not the problem. I'm almost sure it's my psu (Enemax 535W) but can someone else confirm what else could be and what other advanced adjustments I should use?

For 3.7 I'm using about 1.4750 vcore and 1.5250 vcore for 3.8 (both set on bios) with very little vdroop.