HPE has made available 128GB (1x128GB) Octal Rank x4 DDR4-2400 CAS-20-18-18 Load Reduced Memory Kit (HPE info page). The price as of writing this (13.07.2016) is quite high – 9499 USD.
The 128GB RAM module open up possibilities to build single socket systems with up to 1,5TB of RAM.
Example HP ProLiant DL380 Gen9 config:
- 1 x Intel Xeon E5-2699v4 (2.2GHz/22-core/55MB/145W)
- 12 x HPE 128GB (1x128GB) Octal Rank x4 DDR4-2400 CAS-20-18-18 Load Reduced Memory Kit
Reducing the number of sockets could lower the amount of software licenses needed – eg VMWare.