PEOPLE!! I've tested this baby for a 3 hours now and i have to say IT IS SWEET!!
1st of all a little issues, It gets hot on default cooling and it "eats" almost as much as HD2900XT (power).
Now to the performance...Well it is almost as quick as GTX280!! I mean in lower resolutions it is equal (sometimes minimal better) and in higher theres about 5-10% slower but also a lot cheaper!! Sure as always with ATI I could see some strange FPS drops in places that shouldnt be a problem for GPU but as always new drivers should fix the problem. In almost every game( not in Crysis ) card performed so good that my jaw droped under my desk
In Crysis it was not much faster than 4850 but maybe some new drivers will deliver some extra power!!
Image quality is great as on 4850 which is even little pritier than with GTX280(but someone else may like GF IQ better...)
As for earlier post I was right about 1 thing, It is slower thant 9800GX2 BUT IT IS EVEN MORE THAN 15% faster than 9800GTX!!! SWEET
HD 4870 
Still 1 GPU cards are little slower than SLI/CF 
