My dell XPS 8100 (i7 860) based PC is running with an OEM nVidia GTS240 graphics card. The PC uses a Liteon PS6351 PSU 350watt. I need to change out the graphics card as the fan is beginning to fail. I'm trying to get something a little better spec'd that can be matched with the 350Watt PSU. I really can't afford to be upgrading too many components at the moment. I've read that the Radeon HD 5750 may be an option. Does anybody have some words of wisdom?