supreme commander forged alliance, if you can play the biggest map with a rasied unit count with the most cpu players to a massive experimental spam level (insted of quick rush) and not have slow down i'll be impressed.

Metro 2033? ( The obvious answer )
My rig only get's 20 - 30 fps @ 1920 x 1080 maxed settings.

Really? I'm not totally sure of the framerates but it feels really smooth and never stutters for me
Are you using any AA? Advanced DOF?
Metro or Arma 2.Yes max settings and AA.
The game is still playable however I much prefer 30+ fps and I notice the difference especially during outdoor areas.
Does the EPU engine work in connection with the Asus automatic oc software on the P8P67 PRO?
The reason I'm asking is that the Epu engine on my P45Q board could switch off all the fans in the case in energy saving mode(utter browsing heaven!) but it would only allow a tiny oc. It doesn't work with a manual oc so they have to always be spinningIf they both work together on the new p67 then it's good to know in my choice of kit when I decide to take the plunge.