The main thing to compare here today is the performance of the 9800GX2 against the HD 3870 X2 from AMD. We’ve also thrown in the 8800GT, as the specifications on a single core of a 9800GX2 is only slightly above that of an 8800GT, this should mean that if a game doesn’t take advantage of SLI then the performance should only be just above the single 8800GT.
Check it out at TweakTown. The reviewer says the card was a let down in Windows Vista but performed pretty well in Windows XP, I expect this problem will probably be resolved by new drivers.