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This does bring up that the increasing similarities of both MS/Sony consoles and PC gaming WILL certainly bring reciprocal benefits for all. At least Sony's API for hardware access seems to functionally be a superset of Mantle, meaning all Mantle optimizations will be easily portable to PS4 and at least some optimization for PS4 will be portable the other way. Xbone's APIs don't seem to have been as advanced as PS4's, but the underlying building blocks of the GPU is same (GCN 1.1) so it likewise should have broad similarities in optimization techniques. So there should be lots of collective learning that raises the water level for everybody. Of course, PS4's ACEs with 64 threads allows even more unique power, taking advantage of unused portions of shader hardware... and that itself is also somewhat similar, being on par with AMD's current top of the line GPU (though I expect PS4 to still offer more detailed control over that aspect, as well as it's interactions with the entire CPU/GPU/memory architecture).