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 speed depending on processor model and number of modules installed.
Kingston offers both Registered RDIMM and Load Reduced LRDIMM memory modules. Registered and Load Reduced modules CANNOT be mixed within the same system.