According to John Carmack, the PS4 and Xbox One hardware is "essentially the same." This comes at an interesting time, as Microsoft has just boosted the Xbox One's GPU to keep up with the PS4's significantly (~50%) more powerful GPU. In the same keynote talk, Carmack makes two other interesting observations: Three or four years ago, he thought that Intel would make a play for the console space with its (now-DOA) Larrabee GPU -- or, alternatively, that the Xbox One and PS4 could easily have been based on "super-mobile architectures", with "16 ARM cores" and "a whole bunch of PowerVR graphics cores."