I have an iMac and sometimes I use it to play games, graphics are amazing when playing on native resolution, but if I lower it to 1152p/1080p it gets blurry, not as good. I plan on buying a rMBP and was wondering if I'd get block/soft graphics while playing games on non native resolution. I ask because non retina display games look bad on my new iPad Air, and since it uses the same math (4x pixel density over non retina), it might be the same on rMBP. I also want to know if rMBP gets hot and noisy when gaming. Thanks.