umm im pretty sure every strategy game is more demanding than any other game...and the thing with metro is , its great (big fan, books and games) but its not as demanding as coh2 cuz its mostly going on in dark tunnels and in dimmed lighting which and it doesnt requre much frames there
btw im running not very good rig
e5400 2.6g , 3gb ram and Ati HD5670 with 30-25 frames on high (AA low) and is nicely playable
+30 frames is very fluid, damn it consoles run everything on 30frames and no1 complans after they get used to it
