When I up CPU voltage my pc crashes?

Nandi98

Honorable
Feb 10, 2014
1
0
10,510
I have FX 8320 CPU + Scythe Mugen 4 and ASUS M5A97 EVO R2.0 motherboard.
I overclocked the cpu to 4.3Ghz with 1.260V and it's stable! But when I up the voltage to 1.35V, the PC crashes during Prime95.
What's the problem? The CPU is not burn.