Graphics card problem related to PSU? 16 replies

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#1 8 years ago

Hey forum, around 2 years ago my EVGA GTX 260 failed. I later got a 9800 GTX+ that failed in the same way. Both graphics cards would randomly shut down my whole system (no BSOD, no CTD the system literally turned off.) I have been using my cousins old 8600 GT (no PSU direct power cord.) I am now able to get a new graphics card, I'm thinking about the GTX 460, but I am worried the problem with my previous graphics cards originates with my PSU.

Any help?




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Faktrl is Best Pony

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#2 8 years ago

It does sound quite fishy though when a GPU that requires a PCI-e cord shuts off but an independent one doesn't. If it is indeed a PSU problem, I'd think they would both stop working completely, although there could be a bad connection somewhere in the PCI-e cables causing a ground. Not exactly sure what to make of that one. Did you try all the usual methods, driver sweep, update, etc?


"I'd shush her zephyr." ~ Zephyr.



MrFancypants Forum Admin

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#3 8 years ago

Posting what kind of PSU you have and how old it is would be good. If it is old (older than 3 years) or from a low quality company it is probably a good idea to buy a new one anyway.




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#4 8 years ago

It would help if you told us what PSU you have. =p

Based on the symptoms, it does sound more like an insufficient or faulty power supply rather than a graphics card problem.




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#5 8 years ago

I know that the grpahics cards are shot. I've had other people put them in their computers and they have the same problem.

My PSU is a Thermaltak Toughpower 850w




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#6 8 years ago

Hmm...Thermaltake is usually a solid brand and 850W is more than plenty.




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#7 8 years ago

Could I have problems with the 12V+ rails? Or do I just have shit luck with graphics cards?




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#8 8 years ago

How much current do your 12v rails have?




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#9 8 years ago

one 12v rail has 18a, 30a, 18a and 30a




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#10 8 years ago

That as mentioned is a fairly trustworthy PSU brand and model, and has nearly 50% more amperage than is required for a 260, and nearly double what's required for the 9800. Doesn't necessarily mean it was running as it should, but if it was, it would def have enough power.

In your scenario I would suspect excessive heat or solder connection failure before the PSU. Sometimes certain Nvidia cards desolder and need to be baked to re-seat some of the connections, many have done it successfully. What case do you have and have you ever monitored your GPU temps?

It also matters how you hook components up to a multi rail PSU. It's best to have the higher draw components on their own rails, and rails that are high current. If not it's possible the PSU's MOSFETS were hard pressed to keep up with the switching required to distribute the amperage properly.




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