But dude seriously, you probly wont even need that much power at that resolution. I have one GTX 260 (not core 216) with a stock speed 2500k and I get highest settings minus filtering and vsync in almost all games at 1080p. If money is such a big deal for you, I dont think you should go overboard for a 1360 x 768 setup.
Just my opinion. Of course, SLIing two 260 216s would be awesome, but you would also need a very powerful PSU, plus later you have the problem of selling 2 old cards, instead of one not so old one.
EDIT: I was too stupid to read that the choice was already made, but oh well, I wasnt advocating buying the SLI setup anyway. :-) Good choice!
yeah.the 200 series still kicks ass in almost all games.My gtx 275 plays crysis 1,metro 2033 and crysis 2 maxed.goes to show what the pc is capable of.