Defective Power Supply Causing GPU-related problems?

[failblox]

Specs

•  PSU: Corsair TX650M
• GPU: EVGA GeForce GTX 760 SC w/ ACX
• Mobo: ASUS P8Z77-V Pro
• CPU: i5 3570K
• RAM: 16GB Corsair Vengeance 1600MHz
• Storage: Samsung 850 Evo 500GB (OS), WD Black 4TB
• Operating System: Windows 10 Pro

Recently I've been getting graphical-related issues such as artifacting in-game, game crashes, and black screens that result in the graphics card's fans spinning up insanely fast. I just got off the phone with EVGA's technical support (the manufacturer of my card) and the person I talked to mentioned that the issue might be related to my power supply. His reasoning behind that was due to the fact that the 12V rail was fluctuating between 12.192V and 12.288V.

 

I've tried reinstalling NVIDIA drivers, reinstalling Windows (multiple times - and I've tried testing it in Windows 8.1 AND Windows 10), and swapping out the card for another one. I tested out a 6870 I had lying around that I know works, and everything seems to be fine. No game crashes, no artifacting, no black screens.

 

I've had this rig for over 3 years now and the GPU for a little over 2 years. I've never experienced any issues like this with this card until recently. My question is whether or not the issue could really be related to the power supply or whether it really is the GPU. If it's GPU related then I'll do an RMA since the card is still under warranty. If not, then I'll try claiming the warranty for my PSU because I think the warranty for that is 5 years.

 

Sorry for all the text, and thanks to those who stuck around the read all of that. This issue is really puzzling me and I'd really like to get it fixed before school starts and things become busy. Any replies would be greatly appreciated!

[W-L]

-SNIP-

 

I would probe it with a multimeter to double check those voltages those are with ATX specs it's not normal to have it go that high. Can you test the GPU in another system or use another PSU to see if that's the problem.

[failblox]

I would probe it with a multimeter to double check those voltages those are with ATX specs it's not normal to have it go that high. Can you test the GPU in another system or use another PSU to see if that's the problem.

Unfortunately I don't have a multimeter to double check the voltages or another system PSU/system to test the GPU in.

[W-L]

Unfortunately I don't have a multimeter to double check the voltages or another system PSU/system to test the GPU in.

 

The best thing to do is try to test in another system to see if it's a GPU problem say with your buddy's system or something. The only other thing I can think of it causing to artifact or crash is either the temps are too high or if your overclocking and it's not stable.

[failblox]

The best thing to do is try to test in another system to see if it's a GPU problem say with your buddy's system or something. The only other thing I can think of it causing to artifact or crash is either the temps are too high or if your overclocking and it's not stable.

The temps are fine (around the mid 70s when under load) and I haven't overclocked it. I'll see if I can try and get a multimeter or a different system to test it in but it's probably going to take a while :\