Is This A Graphics Card OR Power Supply Fault?

veracior

Prominent
Oct 29, 2017
3
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Short Story
I have a Coolermaster V750 Semi-Modular PSU and a Sapphire R9 390X 8G. The graphics card shorted out, I used my old HD7850 while waiting for repair. In the end it was replaced under warranty after being checked over by the manufacturer.

I have had the R9 390X back in my rig for a little over a month and since then upgraded to Ryzen (new motherboard, new cpu and new DDR4 memory).

Two weeks after the Ryzen upgrade my R9 390X just shorted out again, being a new replacement card from the manufacturer i'm not sure if it was a fault with the card or actually with my power supply. I once again have the old HD7850 back in my PC and everything running fine.

Would really appreciate any advice or thoughts, everything is still under warranty, nothing has ever been overclocked.

Long Story/More Details
In both instances of the graphics card "shorting" I was playing a game and my computer randomly shut off, I tried to turn it on and nothing. After switching the power supply on and off it made a ticking noise, so I unplugged the graphics cards power and the computer turned on just fine.

I play many different games, the first time it happened was while I was playing Path of Exile the second time while I was playing Planet Coaster, I have never had issues while playing much more graphically intensive games (Fallout 4 / Witcher 3) and I almost always play with VSync on. My temperatures have been very respectable at around 30 degrees idle up to 60 degrees on my cpu and 55 on my gpu.

I replaced the graphics card with the HD7850 and everything was good. So I assumed the R9 390X had shorted, which the manufacturer seemed to agree with and replaced it at no cost to me.

The only constant here is the power supply, so now after it happened a second time I'm wondering if the power supply could have caused this. The retailer I buy everything from was really good about it the first time around, they tested out the graphics card and confirmed it was pretty dead and sorted out the warranty for me even without my invoice.

Once again, any advice would be amazing, even if its just about warranty because I've never had an issue like this before.

Cheers,
Drew.
 
Solution
Could be a weird fluke of a thing with the PSU. 750 watts is plenty but the 390x does take around 75 watts more of power. Reading the reviews for the power supply too makes me believe that there is a chance there is a fault.

I believe I remember reading that there can be problems with PSUs when trying to swap a GPU after the PSU was running on lower power for a long period of time.

bfcallan

Honorable
Jan 14, 2014
173
3
10,715
Could be a weird fluke of a thing with the PSU. 750 watts is plenty but the 390x does take around 75 watts more of power. Reading the reviews for the power supply too makes me believe that there is a chance there is a fault.

I believe I remember reading that there can be problems with PSUs when trying to swap a GPU after the PSU was running on lower power for a long period of time.
 
Solution