Well i recently picked up my second GTX 660 since of the holiday bundle bundle out. However i have a 600 watt PSU at the moment and i know for a fact that isn't enough. I was looking around and i came across this PSU and was wondering if it would do the job. Please feel free to recommend any other PSU if it is better.
http://www.microcenter.com/product/406089/CX_Series_CX750M_750_Watt_ATX_Modular_Power_Supply
This was the PSU i had in mind.
600 watts is more than enough. Keep your current PSU.
I would only upgrade if you are looking for power savings. If you get a nice 750+ 80+ Plat it would last for quite some time and you could always go for more watts then 750+ for more future proofing of the PSU.
Power consumption will really only drop from here on out, so adding more wattage to your PSU will only drop your efficiency and waste you money.
That Corsair isn't a great PSU - what are you currently using?
i am currently using the corsair cx600 but i was not sure if it was enough.
i want to run my two 660 in sli but i was wondering if my 600watt psu would be enough?