Logically there shouldn't be any reason why NVIDIA wouldn't be on par sooner or later. I would suggest this is a resource element at the moment - with ATI having DX9 integrated graphics for sometime they obviously felt this would be worthwhile for them now as integrated cycle times at the OEM's are often much longer, so getting good support for Vista now is an active selling point because solutions may SKU's sold now may still be sold when Vista is actually released; now that 6100 is here I expect NVIDIA will be paying more attention to it, especially so when their Intel integrated graphics comes around.