Eni HPC2 is a large GPU cluster operated by Eni, located in Italy, in the private sector. It came online around November 2014. At that moment it ranked number 5 among known clusters.
It is built on 3,000 NVIDIA Tesla K20X. That amounts to about 5.97 H100e of AI compute. The cluster draws roughly 1.41 MW. Its hardware is estimated at $45M.
Epoch AI rates the certainty of this record as confirmed.