well, i havent really given much thought to SLI, as i was pretty sold on P35; but im reconsidering it- what is the best performance wise/overclocking wise board for SLI? in the same price range or a little bit more than the GA-p35-DS3R?
I would not recommend any Nvidia chips since they get very hot but that would rule out SLI and only allow Crossfire.
I would recommend highly a X58 and maybe a Core I7 920 to start, since it also supports SLI and Crossfire!
Otherwise if its money your trying to save then you may not even want to do SLI or Crossfire so you can get any G31/P31 or better and a single high performance Gforce or ATI card that your budget can afford.