I've seen a lot of reviews state that the intel hd4000 is not enough horsepower to drive the retina display in the new MacBook pros. This is ridiculous. For example: The iPad's gpu reportedly pushes under 25 GFLOPS. The verge in Safari is absolutely smooth on the retina display. The Intel HD4000 reportedly pushes 166-294 GFLOPS. The issue is with software scaling in OS X and will certainly be fixed eventually. I hope this will be a breath of fresh air to those worrying about their new rMBPs.