Hp Smartmemory - HP ProLiant ML350e Gen8 v2 Server User Manual

•
UDIMMs represent the most basic type of memory module and offer lower latency in one DIMM per
channel configurations and relatively low power consumption, but are limited in capacity.
•
RDIMMs offer larger capacities than UDIMMs and include address parity protection.
When information applies to all types of memory, the memory are referred to as DIMMs When memory is
specified as RDIMM or UDIMM, the information applies to only that type of memory. All memory installed in
the server must be the same type.
The server supports the following DIMM speeds:
•
Single-rank and dual-rank PC3-10600 (DDR3-1333) RDIMMs operating at up to 1333 MT/s
•
Single-rank and dual-rank PC3-12800 (DDR3-1600) RDIMMs operating at up to 1600 MT/s
•
Single-rank and dual-rank PC3-10600 (DDR3-1333) UDIMMs operating at up to 1333 MT/s
•
Single-rank and dual-rank PC3-12800 (DDR3-1600) UDIMMs operating at up to 1600 MT/s
Speed, voltage, and capacity
DIMM type
RDIMM
RDIMM
UDIMM
UDIMM
Depending on the processor model, the number of DIMMs installed, and whether 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.
Populated DIMM speed (MT/s)
DIMM type
—
RDIMM
UDIMM
* UDIMM is supported at 1DPC at 1600 MT/s at 1.5V using HP SmartMemory only. Third-party memory supports 1DPC
at 1333 MT/s at 1.5V.
** UDIMM is supported at 2DPC at 1333 MT/s at 1.35V using HP SmartMemory only. Third-party memory supports
2DPC at 1066 MT/s at 1.35V.
*** UDIMM is supported at 2DPC at 1600 MT/s at 1.5V using HP SmartMemory only. Third-party memory supports
2DPC at 1066 MT/s at 1.5V.

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, the ML350e server supports DDR3-1333 RDIMM up
to 2 DIMMs per channel at 1333 MT/s running at 1.35V. This equates to up to 20% less power at the DIMM
DIMM rank DIMM capacity
Dual 8 GB/16 GB
Single 4 GB/8 GB
Dual 4 GB/8 GB
Single 2 GB
1 DIMM per 1 DIMM per
channel channel
1.35V 1.5V
DDR3-1333 DDR3-1600
DDR3-1333 DDR3-1600*
Native speed (MT/s)
1333/1600
1333/1600
1333/1600
1333/1600
2 DIMMs per 2 DIMMs per channel
channel
1.35V 1.5V
DDR3-1333 DDR3-1600
DDR3-1333** DDR3-1600***
Hardware options installation 46
Voltage
LV/STD
LV/STD
LV/STD
LV/STD