Emergency Help for Selecting the best Card 7900GS vs. 8600GT

[krush]

I will buy a card tomorrow and need an emergency help about buying 7900gs or 8600gt...
The difference of DX 10 şs too important or not??
Which one needs more power (watt) ??
which one can play current simulator and car games(coz i don't play so much action games)??:rolleyes::rolleyes:

Thanks everyone for important comments and suggestions...

[Mike]

The 8600 GT sucks much less power and is probably faster in most circumstances.