chexmixx23 :
How many watts do I need for a gaming computer with a nvidia gtx 660, an i5 3470 and an ASRock
B75M R2.0 motherboard?
Hi - yes a quality 450w unit will have the necessary +12v amps to
run a system with a reference gtx660.
You have a non-reference model using 2 pcie connectors as opposed to
1 connector in the reference model.
This implies it will draw more current, and I believe it would be prudent to
get something a little beefier (500-520w with2 pcie connectors) in your situation.
What is your budget & where are you located?