I recently upgraded from a 8800gt to a 5850 and must say that I'm a little dissapointed. The leap isn't nearly what I had expected, so I hope somebody out there can maybe give me advice on something I have done wrong or maybe just expeting too much.
The only thing I could think would cause this was that my motherboard only does PCIe 1.1a, but some articles I have read suggested that the biggest differance from 1.1a 2.0 was bigger voltages.
In the heaven 1.0 demo my scores have jumped from 445(8800gt) to 552(5850) on:
Mode: 1680x1050 4xAA fullscreen
I have a:
Intel C2D 8200 @ 3GHz
2gig ram @ 800MHz DFI Bloodiron MB w. P35 & ICH (PCIe 1.1a)