Thanks. I saw that one. He's overclocked the CPU a bit but the graphics cards are running stock so it's a good test. Based on some interpolation and adjustments for the OS I'm going to say that a pair of HD3870 cards in a mobile crossfire setup is going to compare roughly to a single NVidia 9800M GTX but because we're dealing with different cards and crossfire vs. single it's hard to say and performance will probably vary considerably in direct real world comparisons.