Buried in John Siracusa’s excellent review of OS X Mavericks is this little gem:
Modern Macs with integrated GPUs get some nice improvements in Mavericks. Any Mac with Intel’s HD4000 graphics or better can now run OpenCL on the integrated GPU in addition to the CPU and any discrete GPU.
It’s that little bold bit that makes it special! With OpenCL increasingly taking up the load of general computer processes previously forced on the CPU, the more we can take advantage of the GPU power already installed.