I've always used windows since 98 and have had relatively few problems. I have ios devices and enjoy them and so I bought a new imac quad core i7 2.93ghz. It has 1tb, 1 gb 5750 gddr5 gpu, 27" screen. Its gorgeous. However, my wife likes to play Sims 3 with all the expansion packs, and use the architectural design aspects of it. My Dell xps 8100 handles the game like melted butter-smooth and easy. The imac which is a similar to the i7 860 dell, having a 2.93 i7 plays it not nearly as well. I have to run resolution down to 1080p from its higher native, and put most settings on medium without a.a. It still is a bit choppier than the Dell which cost half as much. This is not COD MW2 or CRYSIS, its Sims 3 with all 4 expansion packs. I have a few more days to take back my imac and wondering if ther is a setting I can adjust or just realize this is par for the course in apple land? Any suggestions. I shouldnt have to put Sims three on medium settings on a high end 2.93 i7 quad core. THat is sad.