Well, the awesome Company of Heroes is also just as great on the 24" iMac at 1920x1200 resolution with all details set to high (AA was off). It's not completely silky smooth, but plays very nicely. I imagine you could turn a couple of things down if you wanted, but I had everything at high or ultra and it was very playable with only minor slowdowns here and there. This was in XP btw. And this game is VERY taxing on any computer. Recommended specs are a 3ghz P4, 1gb RAM, 256mb Geforce 6800.