SberCloud Christofari is a large GPU cluster operated by SberCloud, located in Russia, in the private sector. It came online around November 2019. At that moment it ranked number 21 among known clusters.
It is built on 1,200 NVIDIA V100. That amounts to about 75.8 H100e of AI compute. The cluster draws roughly 0.8 MW. Its hardware is estimated at $23M.
Epoch AI rates the certainty of this record as confirmed. SberCloud, which owns this supercomputer, was originally owned by Sber, but was sold off to Noviye Vozmozhnosti in March 2022 Sberbank is majority owned by the Russian Government.