Was my video card DOA or is this my power supplies fault?

KyRiEiSaVaGe

Commendable
Sep 18, 2016
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1,630
I recently fixed crashes I was getting in gta 5 by underclocking my evga gtx 750ti by -300 for the core clock and -300 for the memory clock. I tested it for around 1.5 hours and no crashing occured. My power supply is a stock 300w fsp power supply that came with the psu. A possibility is that my power supply can't handle my gpu at full power and causes the display to crash which gives me a black screen or a ctd. Can someone help me by telling me if this is my graphics card or my power supply. My system is an i5-4460, a gtx 750ti, 8gb of ram and a 1tb hdd.

http://www.outletpc.com/fr6224.html thats a link to some of the power supplies specs.
 
Solution
More like a 150W power supply, which is pretty terrible. (12V @ 13Amps = 156W)

i5-4460 can take up to 84W, and the 750Ti should have a rated maximum of 75W (159W). So already in trouble before adding anything else in the system. Admittedly worst case, but still, long term gaming is going to increase the temperature which lowers the power supplies efficiency further, which is already an abysmal 65%.

If underclocking has solved it, you are right on the cusp of overloading that thing. Best to replace it before it blows up and takes something with it.

Eximo

Titan
Ambassador
More like a 150W power supply, which is pretty terrible. (12V @ 13Amps = 156W)

i5-4460 can take up to 84W, and the 750Ti should have a rated maximum of 75W (159W). So already in trouble before adding anything else in the system. Admittedly worst case, but still, long term gaming is going to increase the temperature which lowers the power supplies efficiency further, which is already an abysmal 65%.

If underclocking has solved it, you are right on the cusp of overloading that thing. Best to replace it before it blows up and takes something with it.
 
Solution

KyRiEiSaVaGe

Commendable
Sep 18, 2016
65
0
1,630