Triple Monitor Gaming- PC Shuts DOWN after 5-10 Mins Radeon R9 390- GPU PROB OR PSU OR CPU?

zaneusb

Honorable
Nov 1, 2012
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10,680
Hi,
I just bought a gaming PC off a friend that is pretty new. It has an

R9 390 MSI card and a
Corsair CX750M PSU
16 GB Corsair Vengeacnce 1600 RAM
AMD A10 5800 APU
ASROCK FM2A75 Pro4 Mobo
and 3 1080p monitors.

I know the CPU and mobo are garbage, and I hope to buy an intel 4690k and compatible mobo, but I am wondering why the PC is shutting off so suddenly when Eyefinity gaming?

I was monitoring the temps, and the CPU temp reached 29C max, the GPU temp reached 85, The mobo 45C and I was monitoring the Voltages as well.


Using Hardware monitor-
CPU Vcore max 1.304V
AVCC max 3.360 V
3VCC max 3.360V
3VSB 3.456 V max

I tried it in single monitor gaming and it seemed to be running fine. The power to the computer just cuts out, and I have to reset the switch on the PSU to turn it back on. The only game I have installed right now and what Im playing is Far Cry 4. I tried it on all settings with the same result. What issue could this be due to?
 
Solution
I was actually referring to the CPU :)

because the computer cutting power could be indicative of CPU overheat.

I don't suppose you have another PSU on hand to try powering the card with?

zaneusb

Honorable
Nov 1, 2012
143
0
10,680
Sorry I accidently clicked that. :p
Anywho I believe that the CPU did increase in temp slightly from 39-42, but I changed coolers to an aftermarket air cooler and still its the same issue. Ok this might sound stupid, but do you think it could be the outlet? How do we know that its not an GPU issue?