This will sound incredibly stupid to most of you, so hopefully you will be able to explain this, in a simple way too. Why is the 15" rMBP offered with what appears to be a slower processor than it's 13" counterpart? In the image I have attached, Apple is offering the 13" rMBP with a max CPU speed of 3.1 GHz, and a 15" rMBP with 2.8 GHz. Shouldn't the processor for the larger, beefier Mac be the faster one? I remember reading something about how "clock speed has literally nothing to do with computer speed, it's all do to with CPU architecture" but it didn't make sense. I plan on buying a new rMBP soon, and would prefer the 15" one, however, like I said, it appears to be slower (I'll be likely to buy flash storage, which I know helps speed things up a lot), however I use my MBP to play GTA V on BootCamp, but that has a MINIMUM required CPU of 2.6 GHz (I think, off the top of my head). TL; DR: which one of these will be able to play GTA V faster, and can you possibly explain why? And also explain how this "Turbo Boost" thing works... I am prepared to pay as much as necessary for this machine, as I will be using for a very long time (I hope!).