HP ProLiant DL388e HP ProLiant DL388e Gen8 Server User Guide - Page 58
HP SmartMemory, Supported DIMM specifications, Capacity, Native speed, Voltage
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Depending on the processor model, the number of DIMMs installed, and whether LRDIMMs, UDIMMs, or RDIMMs are installed, the memory clock speed can be reduced to 1333 or 1066 MT/s. Clock speed can also be reduced when using low-voltage DIMMs. Supported DIMM specifications Type RDIMM RDIMM RDIMM RDIMM LRDIMM UDIMM UDIMM UDIMM UDIMM Rank Single Dual Single Dual Quad Single Single Dual Dual Capacity 4 GB, 8 GB 8 GB,16 GB 4 GB 8 GB, 16 GB 32 GB 2 GB 2 GB 4 GB, 8 GB 4 GB Native speed 1600 MT/s 1600 MT/s 1333 MT/s 1333 MT/s 1333 MT/s 1333 MT/s 1600 MT/s 1333 MT/s 1600 MT/s Voltage STD STD LV LV LV LV STD LV STD Populated DIMM speed (MT/s) Type Rank 1 DIMM per channel 2 DIMMs per channel RDIMM RDIMM RDIMM LRDIMM UDIMM Single (8 GB) Dual (8 GB) Dual (16 GB) Quad (32 GB) Dual (8 GB) 1600 MT/s 1600 MT/s 1600 MT/s 1333 MT/s** 1600 MT/s 1600 MT/s 1600 MT/s 1600 MT/s 1333 MT/s** 1600 MT/s ** LRDIMM enables 2 DPC. HP SmartMemory supports up to 2 DPC at 1333 MT/s at 1.35 V. Third-party memory supports only 1.5 V. HP SmartMemory HP SmartMemory, introduced for Gen8 servers, authenticates and unlocks certain features available only on HP Qualified memory and verifies whether installed memory has passed HP qualification and test processes. Qualified memory is performance-tuned for HP ProLiant and BladeSystem servers and provides future enhanced support through HP Active Health and manageability software. Certain performance features are unique with HP SmartMemory. HP SmartMemory 1.35V DDR3-1333 Registered memory is engineered to achieve the same performance level as 1.5V memory. For example, while the industry supports DDR3-1333 RDIMM at 1.5V, this Gen8 server supports DDR3-1333 RDIMM up to 3 DIMMs per channel at 1066 MT/s running at 1.35V. This equates to up to 20% less power at the DIMM level with no performance penalty. In addition, the industry supports UDIMM at 2 DIMMs per channel at 1066 MT/s. HP SmartMemory supports 2 DIMMs per channel at 1333 MT/s, or 25% greater bandwidth. Hardware options installation 58