Nvidia is no longer selling just expansion cards. They are selling full cluster solutions with Infiniband networking (Mellanox acquisition) and even CPUs (Grace

Nvidia is no longer selling just expansion cards. They are selling full cluster solutions with Infiniband networking (Mellanox acquisition) and even CPUs (Grace). I wouldn't be surprised if they put most of their GPGPU chip production in these. And they are much better than the competition, too. AFAIK, only Google and Microsoft have anything competitive in terms of full architecture (but internal).