I Just changed my GTX260 with a GTX295, but instead of seeing an immporvment the result was just the opposite. Games that where running perfectly on GTX260 run very slow on my new card. Then I realized that even old games like Prototype run really slowly. I updated my BIOS and reinstalled the drivers.
Of course it CAN be, and since its used it might be. Where did you get it from?
I bought it from Ebay, the seller assured me that the card works perfectly. Im thinking that my PSU is too low?
Well, it could be a couple of things. The problem you run into when buying used cards is if the card is in fact bad, you're screwed. Even with a lifetime warranty (like EVGA KR cards) only the original purchaser can submit an RMA.
I know about that risk. Anyway I dont think the problem is in the card. I will test it in another pc to be sure
I just tested the graphic card on another system. It worked perfectly running Battlefield 3 on ultra settings.