Postulating on an assumption here. For the purposes of this post lets assume for 2014 Apple will spec bump the entire line and add "iMac with retina display". Assuming that all specs are equal between the two models, what kind of performance difference can i expect between the two, working mainly in PS, FPX, and LR? (i.e. how will the retina display affect performance) I seem to remember that a lot of graphics pros were opting not to go with the retina display when it debuted in the macbook pro.