Yep, no difference at all, was still @ 1024x768, all on low and still 30-35 FPS.
I couldn't afford a 7800GS, those things are upwards of £50 more than I paid for the 6800 (£160 inc VAT). And i kinda knew already that most games don't use 512MB, but seeing as the card was so cheap.....
Now I've got it installed, I'm getting 10000 points less on Aquamark than I was with the 9800!! FFS!
I've tried both the latest drivers and the ones that came with it (80.xx) and both are as bad as each other.
Any ideas?