So I just ordered the RiMac and have been reading a lot about the GPU's ability to power the display during gaming. It seems people have no issue running at non retina resolution with 4x anti aliasing. My limited understanding of 4xAA is that each pixel is calculated four times in slightly different positions and an average is taken. Would I get the same gaming performance if I turn off AA and run at retina resolution? Has anyone tried this? Does it work and does it result in a better overall image?