XtremeComputing has posted a review on the Club3D 7800GT 256mb pci-e video card

Overclocking this card was a great success. I was able to get the GPU up to 450MHz for a 12% speed boost, and the memory went straight to 1200MHz! That's the same speed as the 7800GTX memory, which is a nice bonus. Of course this is no guarantee that every 7800GT will overclock like this, but from what I have seen, most should and bearing in mind the quality of the components used the Club3d cards look like all being excellent clockers

Club3D 7800GT 256mb pci-e Review