You are not correct that it is all in the drivers. The Intel GPUs just do not have the FLops to complete with the high end offerings from NVIDIA and AMD. Here

You are not correct that it is all in the drivers. The Intel GPUs just do not have the FLops to complete with the high end offerings from NVIDIA and AMD. Here is a realistic benchmark of GPUs and notice that Intel isn't even listed in the first page, that is how slow Intel's GPU is: http://gpu.userbenchmark.com/ http://gpu.userbenchmark.com/