>Apple has had GPU switching for quite a while (my 2010 MacBook Pro has it, and I don't think it was the first). So clearly MS didn't invent that.
Adding to this: Nvidia has also been advertising GPU switching for quite a while now, under the Optimus brand. I don't think it's a coincidence that MS went with Nvidia over AMD for the SB.
Adding to this: Nvidia has also been advertising GPU switching for quite a while now, under the Optimus brand. I don't think it's a coincidence that MS went with Nvidia over AMD for the SB.