Just got my 2.6Ghz Haswell RMBP today and the first thing I did was run the Heaven benchmark to determine how much faster the 750M is than my old 2.3 Ghz RMBP with the 650M. Long story short - it's not. At 1440x900/Medium quality, the 650M got 22.2 FPS, and the 750M got 23FPS for a measly increase of 3.6%. Update: At 1920x1200/High Quality, the 650M got 12.8 FPS and the 750M 13.4 FPS, a 4.6% increase. Second benchmark (1920x1200, High settings) - 650M 12.8 FPS, 750M 13.4 FPS: Other thoughts: I got a "yellow screen", which at first is a bit off putting but not a big deal to me though. Oddly in some ways it seems more crisp and comfortable on the eyes. Battery life also appears to be ho-hum, perhaps even worse than my old system, but I'll need to do more testing to determine that. Doing more Heavenly tests now to test different resolutions.