I just recently finished building my computer using an i5 2500k and a Radeon 6850, and with dozens of high-performance mods running I never experience a lag in FPS. Haven't honestly checked what my numbers are, though. After I finished it, I threw together a cheaper version of what I've got just on a whim, so here it is: http://amzn.com/w/12T2NY5F62OM3 With all of those parts (keep in mind dual 6670 in CrossFire; didn't include price for OS), the total only hovers around $950, though that can fluxuate based on Amazon's prices. You could also forgo the dual GPU for a single two-slot card like I did, or just use the HDD for boot instead of a SSD, but that's up to you. The main differences between that build and mine is that mine has: Corsair H80 Radeon 6850 Corsair M4 256GB (instead of 128) WD Caviar Green 2TB (instead of Seagate) 850w Modular PSU HAF 922 case RoseWill wifi PCI card 5-fan Controller P8P67 PRO B3 mobo You should still get similar performance, but the extra cooling options and accessories will bulk up the cost.