Techpowerup, is one very crappy internet site. Their reviews don't cost a penny, just take a look at the frame rates of the other GPU's.
3870х2 review Е6550
9800 GTX review Е8400 @ 3,6
If you anyone could explain what is going on with those reviews, and with all reviews from TPU, I'm listening.

If you want some serious tests go to Techreport.