P4 3.06 Ghz
1 GB DDR2 RAM
GF 7600 GT
1152x864, mostly on medium settings.
Training missions run okay, bit on the low side, Seelow mission gets unplayable when player gets reinforcements.
Just ran FRAPS and have around 20 fps, seldom more in attack and defence training missions.
I have the full Il2 series including 1946 (fan from the first day) and play that fully maxed apart from highest water setting and get extremely fluid performance.
I have not yet done everything to tweak but IMHO there is a ressource hog somewhere, maybe not even applying to every system? Looks strange when one tank and 4 soldiers are in view and I get 18 fps...
And yes, fps count doesn't really belong into tactical gaming and I'm okay as long something is fluid, but its comparatively slow on my machine measured against other simulations and games.