Only Intel Xeon x2xx Series (Cascade Lake-SP) processors can use memory modules built with 16Gb density DRAM. BIOS/firmware updates and/or specific board revisions may also be required.
Faster memory will clock down to run at optimal speeds depending on processor model installed.
Maximum memory bandwidth is achieved by upgrading in groups of six per CPU. Utilizing the additional sockets for increased capacity, also known as split-channels, will reduce aggregated memory bandwidth (GB/s).
Registered RDIMM and Load Reduced LRDIMM memory modules CANNOT be mixed within the same system.