So last night I decided to run Steam and play Counter-Strike Source and HL:2. My mac runs at a cool 35c throughout the day with a couple browsers open, mail app and excel and I stay around 2000 on the right fan and 1996 on the left. I loaded up this game and after about 2 minutes I jumped to 6k on each fan, and cpu went to 88c. Which is normal. Let me say this the noise didn't bother me, this mac ran like a winner in a marathon. No complaints, it was perfect. I'd try WoW or SC2 but no desire to purchase that stuff since I have minimal time, just wanted to try the above to for a few hours each since my friend was over and gave me his info to test. Wanted to drop some good news since others always have issues, also the heat I couldn't even feel, I put my hand near the monitor (laid it on the aluminum) and I could feel the warmth but nothing painful or to hot to touch, just a normal warm feeling that never got any hotter.