Try to upgrade to a faster CPU, maybe even go with dual core instead of qaud, and faster video card such as a single 8800ultra, or the dual 9800g series, one 640mb 8800gts is pretty fast, but will be processor limmited on the Q6600 unless you are overclocking. Quads don't like to overclock as well as a core2 duo on the 680i paltform. A dual core 6850 OC'd to 3.6GHz gets good numbers on a single 8800gts, SLI seams to drop in performance benchmarks, but over-all game play on some games is smoother with sli, even on a slower CPU clock of 2.4Ghz, but with two 8800gts's on my 680i sli rig, things start to slow down durring graphics intensive games with lots of things going on at once.