I was going to build a PC and get parts from newegg but, my dad doesn't trust this and won't let me. Can this computer play BF3 on high (don't care to much about ultra)? http://www.bestbuy.ca/en-CA/product/ibuypower-ibuypower-gamer-extreme-desktop-computer-featuring-intel-i7-2700k-processor-bb970sl-english-ibuypowergamebb970sl/10195370.aspx?lang=en-CA&pcname=&sku=10195370&path=be8cd8f45e366d563060629029c601b0en02. I was thinking of replacing the dual 6850 with a single GTX 580 SC or a GTX 680, would this boost preformance?