BNY Mellon Supercomputer is a large GPU cluster operated by BNY Mellon, in the private sector. It came online around March 2024. At that moment it ranked number 85 among known clusters.
It is built on 500 NVIDIA H100 SXM5 80GB. That amounts to about 500 H100e of AI compute. The cluster draws roughly 0.71 MW. Its hardware is estimated at $18M.
Epoch AI rates the certainty of this record as likely. "Dozens" probably means at least 36 and less than 100. Multiply this by 8 since it's DGXs. I estimated around 500 GPUs for this