Dang... I just looked at Futuremark's ORB and noticed that the highest scoring X800XT PE is 4K 3Dmarks behind the highest scoring nVidias (obviously with SLI). Just imagine how far they'll go with drivers. We should have all seen this coming... Since at least as far back as the GF4s nVidia has been designing their cores to be able to run as clusters.

and once ATI gets dual core? good bye 4k nvidia lead,hello 4k ati lead

ATi hasn't been developing multi-core capable architectures, nVidia has been for 2 generations (not including current generation).