PSU or GFX card issue?

x123

Reputable
Jun 20, 2014
2
0
4,510
When running Watch Dogs or MSI Kombustor, my computer will automatically turn itself off after approximately 30 minutes. All temperatures are fine for the CPU and GPU which leads me to think it may be an issue with the power supply but I am unsure how to determine whether it is at fault. When running other less demanding games (such as League of Legends) the computer does not crash.

My specs:

Gigabyte Z77-DS3H motherboard
Intel i5 3770k
Asus GTX 670 DirectCu II
Corsair TX650

Thanks for any help!
 

x123

Reputable
Jun 20, 2014
2
0
4,510


Whilst running Kombustor all voltages except VCore stayed at the same levels. Would that suggest it's the graphics card then?