HP ProLiant BL465c Gen8 Server Blade - Manual (Page 35)

Hardware options installation 35
IMPORTANT: This server blade does not support mixing LRDIMMs or RDIMMs. Attempting to mix
any combination of these DIMMs can cause the server to halt during BIOS initialization.
The memory subsystem in this server blade can support LRDIMMs or RDIMMs:
• RDIMMs offer lower latency in one DIMM per channel configurations and (relatively) low power
consumption. They include address parity protection.
• LRDIMMs support higher densities than single- and dual-rank RDIMMs, and higher speeds than
quad-rank RDIMMs. This support enables you to install more high capacity DIMMs, resulting in higher
system capacities and higher bandwidth.
All types are referred to as DIMMs when the information applies to all types. When specified as LRDIMM or
RDIMM, the information applies to that type only. All memory installed in the server blade must be the same
type.
The server supports the following DIMM speeds:
• Single- and dual-rank PC3-10600 (DDR-1333) RDIMMs operating at up to 1333 MT/s
• Single- and dual-rank PC3-12800 (DDR-1600) RDIMMs operating at up to 1600 MT/s
• Quad-rank PC3L-10600 (DDR3-1333) LRDIMMs operating at up to 1333 MT/s
Speed, voltage, and capacity
DIMM type DIMM rank DIMM capacity Native speed (MT/s) Voltage
RDIMM
Single-rank 4 GB 1333 LV/ULV
RDIMM Single-rank 4 GB 1600 STD
RDIMM Dual-rank 8 GB 1333 LV/ULV
RDIMM Single-rank 8 GB 1600 STD
RDIMM Dual-rank 16 GB 1333 LV/ULV
RDIMM Dual-rank 16 GB 1600 STD
LRDIMM Quad-rank 32 GB 1333 LV/ULV
Memory operating data rate is dependent on processor capability, DIMM capability, operating voltage, and
the number of DIMMs installed in a channel.
Populated DIMM speed (MT/s)
DIMM type DIMM rank 1 DIMM per channel 2 DIMMs per channel
RDIMM (LV/ULV) Single-rank (4 GB) 1333 1333
RDIMM (STD) Single-rank (4 GB) 1600 1600
RDIMM (LV/ULV) Dual-rank (8 GB) 1333 1333/1066*
RDIMM (STD) Single-rank (8 GB) 1600 1600
RDIMM (LV/ULV) Dual-rank (16 GB) 1333 1333/1066*
RDIMM (STD) Dual-rank (16 GB) 1600 1600
LRDIMM (LV) Quad-rank (32 GB) 1333 1333
*Ultra low voltage 8 GB and 16 GB dual-rank DIMMs operate at 1066 MT/s in a two DIMMs per channel configuration.
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.