To be clear, the GPGPU enabled by ACEs (massively more present on PS4 than XBone or this Steambox) will tend to be able to do compute tasks similar to how PS3's SPUs could. Late PS3 games show how that worked, with the SPUs augmenting the seemingly weaker (than Xbox360) GPU to create better graphics. The integrated memory in PS4 will just make that even easier with lower-overhead. These compute threads handled by ACEs can happen in portions of the CU's otherwise unused by shader programs so are basically 'free compute'.







