Theoretically, if AMD can get HSA working universally with all programs then they may see the kind of speed increase when paired with Discrete GPUs that would let them catch or surpass Intel in certain scenarios. This means they don't need the FX series anymore. A lot of games use repetitive calculations (particles, physics, etc) that are perfect for HSA offloading to the integrated GPU and freeing up cycles on the general computing cores. Good things are coming if this works out.