You should not look at that Tomshardware chart. It's just plain bad. Look at how 8800gts sli far outperforming 4870 cf, or single gtx260 far outperforming 9800gx2. I don't know how they get results like that, but it's BS.
Haven't really played any games that test it yet. Sorry for the poor quality images, but you can see that is a pretty substantial leap in performance on 3dmark.
Synthetic Benchmarks mean nothing. That card does not even have that great a factory overclock, and the stock cooler is about as good as that one...
My cousin's 8800 GTS 512 when I just tested one scored higher than that set at 810/2180 with the fan at 72%, which is not very audible. That card is overpriced, but I am not a fan of factory OC'd cards to begin with, its easy enough to do it yourself. That said you got a great card, just not the best for your money. I do recommend booting up Rivatuner or ATI Tools and doing some overclocking though.
Cooling. Have another look at all the manufacturers cards, and tell me Asus' cooling solution doesn't look better than the rest. It works, too. Coolest running card I've ever had. It will be stupid easy to clean, also.
So, a year down the road and a little dust, and those stock cooled, factory O/Ced cards are going to bake. This thing will be running cool as a cucumber.
The stock cooling for the 8800 GTS 512/ 9800 GTX is a cooler made by Zalman. The cooler on the "dark knight" edition is the Arctic Cooling (or a very similar knock off) heatsink which when used with the fan kit cools almost exactly as well as the stock Zalman cooler. You realize that it is very easy to remove dust, it is called compressed air.