Ampere Altra 80-core ARM CPU
For context this is an evolution of the Applied Micro X-gene (I believe this is the 3rd generation).  The 1st gen was the famous Mustang, one of the first Aarch64 chips generally available that ran Linux.  I still have one in my loft somewhere.Edit: I should note that if you used the X-gene 1 it was very slow, albeit a reliable workhorse for early 64-bit ARM Linux development.  These newer chips have far better performance.