Hi I am planning to purchase a new iMac in the coming weeks and was all set to go for the top spec 27" version with all the upgrades but looking at the screen size in the apple store I felt it was a little too big. I think 21.5" would be enough as im used to working on my 13" Macbook Pro. My question is if I went for the fully upgraded iMac 21.5 (with the NVIDIA GeForce GT 750M with 1GB video memory), would it run the latest games well? for example X-Rebirth & Xcom enemy unknown. I plan to play these from Windows 7 bootcamp as my machine will be dual use (OSX for work/study and Windows for gaming).