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I'm a GTX 660 user. It is faster that GTX 570. UNLOCK and OVERCLOCK it and it will be up to par with a 7870. Read thread here:Originally Posted by sgdude
1.) Get a CPU cooler and OC that cpu. You can get tons of help on here.
2.) If you can't afford a GTX 660, get a card from the last generation used, they will be better than a 650 TI. That's what I did.
GTX 480 & GTX 570 are about as fast as a GTX 660 (non Ti) with the GTX 470 and GTX 560 Ti approaching that level when overclocked.
And don't get a card for PhysX, that's generally a waste of money. Put that money towards a new cpu if you want.