The HPE Cray Supercomputing EX is a liquid cooled blade-based, high-density clustered computer system designed from the ground up to deliver the utmost in performance, scale, and density. The basic building block of the HPE Cray Supercomputing EX is the EX4000 liquid cooled cabinet or EX2500 liquid cooled rack.  The EX4000 cabinet is a sealed unit using closed-loop cooling technology and does not exhaust heated air into the data center. The EX2500 offers the same sealed closed-loop cooling capabilities as the EX4000.  However, it also offers the ability to use part of the rack for air cooled hardware in certain configurations.  In both configurations, direct attached liquid cooled cold plates provide for efficient heat removal from high power devices including processors, GPUs, and switches via a cooling distribution unit (CDU).