I get this too.
- i7 950 @ 4.2
- 6GB DDR3 1600MHz
- ATI HD6970
- 256GB SSD / 1TB HDD
- Win 7 x64
Tried switching out the PSU, ran multiple passes with memtest on each stick. Messed with GPU & CPU voltages. Ran everything stock. Nothing. Still getting random restarts.
Temps:
CPU – Idle 40c in-game ~60c
GPU – idle 45c in-game ~65c