I just bought 2 470 gtx to help me use second life the SIM type game and i seem to crash...is anyone having the same or similiar experience... Asus Crosshair IV extreme mobo with AMD 1100T CPU and 2 470 gtx though only running one...12 gigz G.Skill ddr3-1600 4gig X 1 timing 9-9-9-24 1.5v