There are some who claim Intel is trying to kill eGPUs (external GPUs) and dGPUs (discrete GPUs) [1]. You're actually spot-on with the one killer use case of a

There are some who claim Intel is trying to kill eGPUs (external GPUs) and dGPUs (discrete GPUs) [1]. You're actually spot-on with the one killer use case of a thunderbolt connector. It's the same question dock connectors have also answered -- what's the need for a dock connector? A better GPU. Thunderbolt is simply Intel's way of killing a good idea before it gains enough traction to threaten their hegemony with USB. [1] http://semiaccurate.com/2012/12/17/intel-slams-the-door-on-discrete-gpus/ http://semiaccurate.com/2012/12/17/intel-slams-the-door-on-d...