Computer automatically turns off with new GPU recently installed

magnushs

Reputable
Dec 23, 2014
7
0
4,510
I've just recently upgraded from a GTX 650 to a GTX 780 Ti OC, I can play games such as Counter-Strike: Global Offensive and Red Orchestra 2 just fine, but when I play a more "demanding" game such as Payday 2, my computer shuts off completely, no blue screen, no warning, the fan doesn't go faster, it doesn't sound like anything is wrong, but it does. I furmark'd my GPU at 1920x1080 with no Anti-Aliasing and it goes up to 86 C and stabilizes there, so I don't think my GPU is overheating. I used GeForce experience to uninstall and install the old and new drivers, so nothing should be wrong there. I even tried to manually rollback my GPU's drivers today and re-install, it didn't help.

My set-up is as follows.

OS: Windows 7
CPU: AMD FX-8120 Eight-Core Processor (8 CPUs), 3.1GHz
RAM: G-Skill Ripjaws 8GB X2
GPU: EVGA GeForce 780 Ti OC
Motherboard: Gigabyte GA-990FXA-UD3 x64
PSU: AZZA Dynamo 850W

If anyone has any suggestions please let me know.
 
Solution


I see the problem. It's a cheap quad rail PSU with it's 60 amps divided between them but you need at least 20 amps for a stock 780 and your card is much more power hungry.

it should be able to drive the card if you attach another one of the rails to it, if not, grab a couple of cables that will combine 2 rails into one and then plug them both in. Effectively putting all 4 rails worth of power into a single card.

It might just be better to get a decent 600-700w single rail psu though.

Trenchcoat

Honorable
May 7, 2013
732
0
11,160


I see the problem. It's a cheap quad rail PSU with it's 60 amps divided between them but you need at least 20 amps for a stock 780 and your card is much more power hungry.

it should be able to drive the card if you attach another one of the rails to it, if not, grab a couple of cables that will combine 2 rails into one and then plug them both in. Effectively putting all 4 rails worth of power into a single card.

It might just be better to get a decent 600-700w single rail psu though.
 
Solution