as u can see 512bit (radeon 2900) still doesnt do the thing it is slower than 256 bit radeon 3870.
i think that 512 is nota big deal. it is not going zo be twice as much fast as 256 BIT.
I think that we can expect up to 4 cores as one chip
yes, that is sad, they could easly deploy DX11 (specs ar coming out soon) i think that something must be wery wrong at nvidia, they stuck at G80 arhitecture