OK, I currently have a 430W psu, i5 3350p quad core CPU, and a gt 640, and 2 4GB ddr3 1600 Mem sticks. Thinking of upgrading the 640 to either a 650 or 660. Problem is the site I am looking at has the 660 as a little more than $100 more expensive then the 650. My question is this, is the performance difference between the two cards so incredible, that the cheapest person on the earth could justify spending the extra $100 for the 660. Hardware wise, I should be able to use either card. If you know of better pricing differences, the card must be an evga card, and the price must be CAD, not USD.
Btw , check the HD 7870 too , it's for the same price of the GTX 660 or maby cheaper and it's better than it in overall performance .
As it turns out, since I want the 3d vision surround feature, I have to get the gtx 660. But either way, I will go with the 660, and give you the best answer. Unfortunately, seeing as I have to use 3d vision, AMD cards are out of the question. Besides, I haven't had much success with AMD products.