Hi friends, I have a question about the newest rMBP 15" upgrades, particularly the processor. I know the higher end model comes with a 2.3 ghz CPU and a dGPU. The base 15" has a 2.0 ghz CPU and integrated graphics. If I choose the base model online but upgrade just the processor to the 2.3 ghz version, does that mean I also get the dGPU? Or do I only get the dGPU if I choose the full high end model (w/ upgraded ram and ssd space)?