If you have a 24" or larger LCD, go for DDR2 and the 780i SLI FTW if you REALLY want SLI. Otherwise, go with a single vidcard instead along with an Intel chipset... you'll have less problems and waste less money. DDR3 is still expensive and not worth the price for the current Core2 platform. When Core i7 comes out, then consider DDR3 -- until then, latencies are too high, speeds aren't fast enough, and prices aren't low enough.