This is the 512 Gddr3 model, not the extended 1 gig ddr4 models.
However, those gddr4 1 gig cards are NOT XTX's, they don't offer better frequencies, and I don't think that ATI themselves have released such a revision of the HD2900 XT.
I know Sapphire and a few of the cheap makers have those, but I wouldn't count on them performing a ton better than the 512 Gddr3
Thanks Nukkus
