Originally Posted by darkling
First up, you don't need two video cards in SLI to run things at 1080p. I run things just fine at 1080p and have a 200 dollar mid-range gaming card
Second, $2000 could provide you with 3 good PC's or 2 great ones.
Get an Intel i5 or i7 processor (200 vs 300), a Nvidia 660 or 660 Ti (200 vs 300), 8 or 16 GB of ram, a motherboard and a case+PSU and you'll be set.
It is very unlikely you'll need a sound card at all. This isn't 15 years ago. Unless you find your sound options lacking from your motherboard, you shouldn't bother. It's totally a wait and see thing. Check review sites to see what you're getting.