I am just wondering, is it safe to put that graphics card in under that 550W Widetech power supply? Because I was reconsidering getting a better one. But will the graphics card meet it's requirements under that PSU?
My Dad currently has a GTX 560 Gigabyte (Natural OC, he has it OC'd more) in a 550W OCZ Fatal1ty, it works perfect with his Dual Core 6800 (I think it was a 6800, or close to it), I would say post your other PC specs, like CPU as those all count to main wattage in your system, a 550W can run the 560 but I would say to make fully sure, give us all of your specs or just the main power ones like the CPU and such
It puts out an amazingly low 25 amps on the 12v rail ( the 12v rail is what powers most components like the CPU and GPU ) making it a real 350w power supply.
Nvidia recommends a 520w power supply for a GTX 560. That assumes a generic brand so a quality 500w model will handle that card just fine. Even a quality 450w unit would probably be fine depending on the 12v rail amps as that is more important than watts.