HardOCP benched the Palit GeForce 8800 GT Super+1GB graphics card and reports whether the extra memory makes any difference on the 8800 GT.
The Palit GeForce 8800 GT Super+1GB is clocked at the default, suggested clock speeds of 600 MHz core and 1.8 GHz memory. This is not an overclocked video card out of the box. The two things that make this video card unique from all the rest are the custom heatsink/fan cooling unit and the use of 1GB of GDDR3. Due to the use of 1GB of memory, the MSRP on this video card runs higher than other 8800 GTs, Palit has set a suggested price of $299 for this video card.
Check out the full review over here. The reviewer concludes that 1GB of RAM is overkill for the 8800 GT as the GPU isn't fast enough to take advantage of it.