andrewcarr :
I'd personally rather have two 670's but why not one of the best card you can afford? Single GPU card not dual.
This is an old mantra that needs to die out. It just doesn't hold up to logic anymore.
The frame latency for SLI is so close to a single card it's unnoticeable.
People argue that buying a single stronger card give you an upgrade path later. That doesn't make any sense either.
Say you spend $400 on a 770, and two years from now, buy a second one for $200. You've spent $600 in total.
I buy a pair of 760's now for $500 and enjoy much better gaming performance for those two years. After two years, I sell the 760's for $250 total, and buy two 770's for $400. I've spent $650, and for that extra $50 I've had much better gaming performance than the 770 solution for
two years, and I match it now.
Course, you don't even
really need to upgrade the second build....2 760's aren't far behind 2 770's.