dude ;( just wait for the offical reviews... these are just numbers without any screenshots... also 3D mark don't really mean crap 🙁 i like to see IQ test.
i will break it down for you "technoob" :
SLI vs crossfire
ATI X1900XT + ATi X1900 XT 512MB CrossFire = 13,501 3DMarks for $1098
2x NVIDIA GeForce 7900 512MB SLI = 13,000 3DMarks or its not SLI 🙁 if its not sli then this card would kill aTi alone unless nvidia wants to play the 7800GTX 512MB game again...
card by themself
ATi RADEON X1900 XTX 512MB = 11,149 3DMarks for $649
ATi RADEON X1900 XT 512MB = 10,000 3DMarks for $549
i think these score are made up and we should wait for offical review and then wait a month more than price would come to down to normal levels 🙂