I googled on the card and found this:
http://enthusiast.hardocp.com/article.h ... h1c2lhc3Q=
This new card seems not even capable of the 8800GTS 640mb...
just look at the setting which had to be choosen in Oblivion and Stalker!
Lower resolution and shadow options in Stalker and lower Grass Settings in Oblivion to achieve an equal performance...
On top of that it doesn't support 3d Stereo
It's weaknesses might be the 512mb of ram, but at least it 'has a 512 MB of GDDR3 on a 512-bit', whereas the 8800GTX 'just' has Ram on 384-bit. This might give Ati's card an advantage with big streaming formats (extreme HD)^^.
In the end is to mention it needs an awful lot of power, althoug it is based on the new 65nm technology...
Luke