D.P. said:
Maybe slightly however, several reviews show 7800 512 GTX's in SLI mode beaten, in some games, by a single X1900XT (or XT-X - not a huge difference between them ) - and where the GTX's are quicker than the single unsurprisingly a pair of XT's are quicker.
The review I just looked at (note where I say the 7800's win I mean a single X1900XT is beaten by TWO 7800GTX 512's - I'm ignoring single X1900XT vs single 7800GTX as that isn't any contest what so ever) :-
BF2 - X1900XT wins (the review didn't show a SLI for this test so suspect this is a game that doesn't support SLI - which does happen sometimes - unlike crossfire).
DoD (HL2) - Once you plug in AA dnd AF ( which most people do ) the Solo XT beats the pair of 7800 GTX's.
Farcry - loses out but the pair of X1900XT's are better than the SLI pair.
F.E.A.R - Wins again ( once some AA and AF is enabled ).
Splinter Cell - Loses out but the Crossfire pair beats SLI pair
Quake IV - Loses out but Crossfire pair wins.
Point I was making, which is very valid, is that the X1900XT is a fantastic and very good value piece of kit. NOTHING on the market comes close to it at the moment - except the double 7800GTX SLI on one hybrid card but that's silly money and probably beaten by the comparable Crossfire pairing.