I recently upgraded my GPU to GeForce GTX 660 the min power requirements on the box calls for a 450W psu... my Dell XPS 420 only has a 375W psu. Now what is happening is as I'm playing Diablo 3 about 5- 10 minutes into the game the system shutsdown and then restarts. I used driver booster to make sure all my drivers were up to date. Also one of the two fans on the GPU is pretty much completely blocked. Do I need a new psu?
Update 1/12/14: I checked the windows event log - there were three critical system errors that coincided with the times I was playing the game. One of the reasons given for the shutdown was sudden loss of power. I think it is obvious I need to upgrade my psu - I guess the only question left is how do I get the best value for my dollar?
Power Supply:EVGA 500W 80+ Certified ATX Power Supply ($34.99 @ Microcenter) Total: $34.99 (Prices include shipping, taxes, and discounts when available.) (Generated by PCPartPicker 2014-01-21 19:41 EST-0500)