58Figure 15. Installing a processor/DIMM blank1. processor or DIMM blank 2. heat sink retention socket (4)3. standoff (4)Next stepFollow the procedure listed in the After working inside your system section.Related linksSafety instructionsInstalling a processorRemoving a processor or DIMM blankBefore working inside your systemAfter working inside your systemSystem memoryYour system supports DDR4 registered DIMMs (RDIMMs) and load reduced DIMMs (LRDIMMs). It supports DDR4 voltagespecifications.NOTE: MT/s indicates DIMM speed in MegaTransfers per second.Memory bus operating frequency can be 2400 MT/s, 2133 MT/s, or 1866 MT/s depending on:• Number of DIMMs populated per channel• System profile selected (for example, Performance Optimized, Custom, or Dense Configuration Optimized)• Maximum supported DIMM frequency of the processorsThe system contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-socket set is organized intofour channels. In each channel, the release levers of the first socket are marked white, the second socket black, and the third socketgreen.NOTE: DIMMs in sockets A1 to A12 are assigned to processor 1 and DIMMs in sockets B1 to B12 are assigned to processor2.The following table shows the memory populations and operating frequencies for the supported configurations.
