If we have to make a conclusion right now based on the information we got during testing for this article, ATI really have a solid offering in Crossfire. NVIDIA should be worried. Even with quite a slow card and a limited system, a pair of Radeon X1600XT in Crossfire scale beautifully in performance. In most cases you'll see a definite increase in performance, both at default and with AA / AF enabled. The increase does vary, mostly depending on your processor and the chosen graphics cards vertex shader performance. In pixel shader limited situations, the gains can be very impressive - 70 to 100 percent. At it's worst, you'll get a minimal impact in performance, mostly on the upper limit (SW: KOTOR) so it's virtually penalty free.