I currently have a Mac Pro 2.8 with a 4870 1Gig video card that I flashed. I am really thinking of selling it and getting a new i7 iMac. For those who have played and gotten results, what kind of framerates are you seeing? I get 30 fps in Dalaran and about 15fps during 25 man boss fights. I would like to try and delay my mean time to obsolescence as best as possible. Thanks for any info.