The reason is because when i plug my DVI-D Single Link cable into the card DVI-D Dual Link Connector. My comp will auto shutdown when gaming but when i switched to plug my DVI-D Single Link cable into the card DVI-I Dual Link and its working fine. So I wonder it would be the card faulty or what..
Oh no...i thought it will fine when using DVI-I connector..after some time gaming my computer auto shut down again..so its regardless i plug into DVI-D or DVI-I connector, my computer auto shut down when playing all max setting in game. I tried lower down the screen resolution(in game setting) says like 1440x900 then it wont auto shut down..
I was actually looking for the wattage as well. But I think you mean this one Silverstone Strider 560w ST56F ATX PSU and your graphics card need a minimum of 500W so you should be fine but I always prefer a little more leeway.
I cannot see why you should not be able to run your games at high spec with that GPU. It could be a faulty GPU or PSU which is failing under load causing your PC to shut down. I suspect that it is more likely to be the power supply rather then the graphics card.