HP ProLiant ML310e HP ProLiant ML310e Gen8 Server User Guide - Page 45
HP SmartMemory, DIMM identification - gen8 memory
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IMPORTANT: This server does not support mixing LRDIMMs, RDIMMs, or UDIMMs. Attempting to mix any combination of these DIMMs can cause the server to halt during BIOS initialization. The server supports single- and dual-rank UDIMMs operating at a speed of up to 1600 MHz. Depending on the processor model and the number of DIMMs installed, the memory clock speed might be reduced to 1333 or 1066 MHz. The server supports a maximum system memory of 32 GB, using 2-GB, 4-GB, and 8-GB UDIMMs. 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. 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. DIMM identification To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and table. Item Description 1 Size 2 Rank 3 Data width Definition - 1R = Single-rank 2R = Dual-rank 3R = Three-rank 4R = Quad-rank x4 = 4-bit x8 = 8-bit Hardware options installation 45