New to this site, and have been reading over builds for a few days now. The thing is, I'm still very confused about what will give me the best bang for my buck. As stated in the subject, my budget is about $600-$800 (a little more is fine if its worth it, and not including the monitor), and I'm trying to build a gaming PC to run games like Starcraft 2 on ultra, Battlefield 3 when it comes out, and Shogun Total War 2 when it comes out as well. I would like to be able to run these games at pretty high settings. Would it be worth it to get SLI/Crossfire compatible cards? I know this is a pretty wide open discussion, but any recommendations would be great.