I just found out today that my SLI setup (dual 9800 GT) never actually worked in Fallout 3.
I changed the setting to force AFR2 (from auto) and I got a nice increase in performance.
Which means I can now use the Fallout 3 High Definition Texture Pack and the HiRes Rocks mods.
See here for an example of the difference of the HiRes rocks:
http://www.fallout3nexus.com/downloads/images/866-1-1227981588.jpg
Looks absolutely gorgeous now (I'm playing in 1920x1200 with 4x AA and 4x AF).

Which means I can now use the Fallout 3 High Definition Texture Pack and the HiRes Rocks mods.

See here for an example of the difference of the HiRes rocks:
http://www.fallout3nexus.com/downloads/images/866-1-1227981588.jpg
Looks absolutely gorgeous now (I'm playing in 1920x1200 with 4x AA and 4x AF).
