I just read the following review: <A HREF="http://graphics.tomshardware.com/graphic/20041119/index.html" target="_new"> NVIDIA GeForce 6600 GT: AGP Has Not Been Forgotten </A> and on one of the pages is the quote: "Even with 4x FSAA and 8x anisotropic filtering, the GeForce 6600 GT is convincing. But at 1600x1200, the limits of its relatively paltry 128 MB memory become evident once again. " This quote indicates that perhaps the other cards had more memory than 128 MB. However, the amount of memory used on other cards is not listed anywhere. Can anyone help me? It appears that the 6800 Ultra comes solely w/ 256 MB of memory, but the Radeon 9800 Pro and the 6800 GT can have either 128 MB or 256 MB of memory.