GeForce.com offers links to download new version 270.51 beta reference drivers for NVIDIA GeForce graphics cards, offering "notable performance gains in standard gaming modes, SLI gaming modes, and 3D Vision gaming modes." Here's word on the improvements: "As you can see in the chart below, we measured performance increases of 11% on the GeForce GTX 580 in our two Just Cause 2 tests, 7% in Civilization V, 6% in Far Cry 2 SLI, 5% in Civilization V SLI, 5% in Left 4 Dead 2 and Left 4 Dead 2 SLI, 4% in H.A.W.X. 2 SLI, and 4% in Mafia 2 SLI."