Hi! I've heard about the throttling issues 15" Retina MacBook Pro owners had since 2012. I wasn't expecting anything similar, as mine is a Retina MacBook Pro 2014, i7 2.2 GHz with Iris Pro. This one has the same cooling system that the dedicated nVidia graphics versions have, and the same 85W power supply, but it only has to take care of the Core i7 -477HQ CPU, with a max TDP of 47W. However, while stress testing it with Civilization V, I noticed, that after one and a half hour the battery begins to drain, (the MagSafe chargers led turns orange). Since the total power consumption of this system is lower, as it has no dedicated GPU, I wonder if my case is common? Based on this there's no safe version of the 15" MacBook Pro for power users, as even the base models can't be run sustainably, and higher-end models add a cca. 40W GeForce chip as well.