Dell PowerEdge R760XA Installation and Service Manual - Page 96

Table 70. Memory channels Processor Channel Channel A B Processor 1 Slots A1 Slots A7 and A9 and A15 Processor Slots B1 Slots B7 2 and B9 and B15 Channel C Channel D Channel E Channel F Channel G Slots A3 and A11 Slots B3 and B11 Slots A5 and A13 Slots B5 and B13 Slots A4 and Slots A6 A12 and A14 Slots B4 and Slots B6 B12 and B14 Slots A2 and A10 Slots B2 and B10 Channel H Slots A8 and A16 Slots B8 and B16 Table 71. Supported memory matrix DIMM type Rank Capacity RDIMM 1 R 2 R 4 R 8 R 16 GB 32 GB, 64 GB 128 GB 256 GB DIMM rated voltage and speed Operating Speed 1 DIMM per channel (DPC) DDR5 (1.1 V), 4800 4800 MT/s MT/s DDR5 (1.1 V), 4800 4800 MT/s MT/s DDR5 (1.1 V), 4800 4800 MT/s MT/s DDR5 (1.1 V), 4800 4800 MT/s MT/s 2 DIMMs per channel (DPC) 4400 MT/s 4400 MT/s 4400 MT/s 4400 MT/s General memory module installation guidelines To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory. If your system's memory configuration fails to observe these guidelines, your system might not boot, stop responding during memory configuration, or operate with reduced memory. The memory bus may operate at speeds of 4800 MT/s, 4400 MT/s or 4000 MT/s depending on the following factors: ● System profile selected (for example, Performance, Performance Per Watt Optimized (OS), or Custom [can be run at high speed or lower]) ● Maximum supported DIMM speed of the processors ● Maximum supported speed of the DIMMs NOTE: MT/s indicates DIMM speed in MegaTransfers per second. NOTE: Fault Resilient Memory supports only eight and sixteen DIMMs per processor. ● All DIMMs must be DDR5. ● Memory mixing is not supported for: ○ Different DIMM capacities ○ X4 and X8 DRAM memory modules ○ 3DS and non-3DS RDIMMs NOTE: 3DS is a DRAM technology used to manufacture the highest capacity DIMMs. Refer to your DIMM documentation for additional details. ● If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory module(s). ● Populate memory module sockets only if a processor is installed. ○ For single-processor systems, sockets A1 to A16 are available. ○ For dual-processor systems, sockets A1 to A16 and sockets B1 to B16 are available. ○ A minimum of 1 DIMM must be populated for each installed processor. ● In Optimizer Mode, the DRAM controllers operate independently in the 64-bit mode and provide optimized memory performance. 96 Installing and removing system components