e8400 cpu @3.6ghz
4870x2 duel gpu card
8 gigs memory
win7 64bit sp1
Russian version of game.
After patching game would not launch properly so had steam validate game cache and re applied patch.
Game started fine after second attempt.
GPU clocked up from 2D clock speeds to 3D on both cores!
Loaded channel mission 15 and as soon as mission was fully loaded GPU went back to 2D core settings

I have duplicated this several times, you guys are close!
Still doing testing on fps and stutters but seems a little bit better in both regards but hard to tell, need to test more.
Trees on very low and buildings on low all lese high or medium with grass, shadows and roads turned on and 8x AA.