**64GB RDIMM and 128GB LRDIMM can ONLY be used on 2nd Generation Xeon Scalable x2xx Series (Cascade Lake-SP) processors!**
Faster memory will clock down to run at optimal speed depending on processor model installed.
This system supports Registered RDIMM and Load Reduced LRDIMM memory modules. Modules of different memory types CANNOT be mixed within the same system.
If only one processor is installed, only 12 DIMM sockets can be populated. With four processors, all 48 DIMM sockets can be populated.