i mean gaming on osx and win 7 (bootcamp) i know the 27 imac Resolution is 2560 x 1440 pixels. does playing in 720p is as great as playing on native 720p monitor ? does playing in 1080p is as great as playing on native 1080p monitor ? and does 1440p beat all the above ? AMD Radeon HD 6970M graphics processor with 1GB of GDDR5 memory is enough for gaming in 720p and 1080p,is that right ? and the 2GB version is for 1440p, is that right ? sorry for many questions and thank you.