Best Buy 15" MacBook Pro doesn't have NVIDIA video processor?
Total lies? What would… oh, do some companies do that? Does Dell only give Best Buy certain models or something?
It's bull honkey. Best Buy has nothing the Apple Store doesn't. The dedicated GPU comes on if you're doing something graphical with the computer. Under light loads, the dedicated GPU is turned off and the integrated one takes over.
About This Mac, More Information, System Report, Graphics/Displays. It'll show you both GPUs.