Might help if you told us exactly what you're hoping for.
What games will you play?
How many monitors?
3D setup?
etc.
All kinds of games, BF3, Deus Ex, FIFA 12, Shogun 2, RAGE when it's released.
Don't worry about the monitor, not interested in 3D.
Thanks Teaz, is it worth going for the GTX 590 instead of the 580 because it's almost a year old? The life span with cards is about 2 years max.