full-paper:
Stockfish and Elmo used 44 central processing unit (CPU) cores.
AlphaZero and AlphaGo Zero used a single machine with four first-generation TPUs and 44 CPU cores

Xeon E5 2699 v4:
https://ark.intel.com/ja/products/91317/Intel-Xeon-Processor-E5-2699-v4-55M-Cache-2-20-GHz-

http://www.atmarkit.co.jp/ait/articles/1807/06/news108.html
TPU v1 : 40W