HP ProLiant DL385p Gen8 Server - Manual (Page 54)

Hardware options installation 54
Memory
modules
per
channel
Single-rank
or
Dual-rank
Memory module
native speed
Memory bus
speed (standard
voltage memory
module)
Memory bus
speed (low
voltage memory
module)
Memory bus
speed (ultra low
voltage memory
module)
3 3 mixed 1600 MHz
1333 MHz 1066 MHz 800 MHz 667 MHz
Populated DIMM speed (MT/s), LRDIMM
Memory
modules
per
channel
Number of
LRDIMMs
Memory module
native speed
Memory bus
speed (standard
voltage memory
module)
Memory bus
speed (low
voltage memory
module)
Memory bus
speed (ultra low
voltage memory
module)
1
1 1333 MHz — 1333 MHz 1333 MHz
2 2 1333 MHz — 1333 MHz 1066 MHz
3 3 1333 MHz — 800 MHz 667 MHz
If RDIMMs of different native voltages are installed together, you can change the DIMM voltage through the
DIMM Voltage Preference menu (under the Advanced Power Management Options menu) in RSBU (" Using
RBSU " on page 104 ). Optimized for Performance is the default setting, but choosing Optimized for Power
reduces the voltage, which may also reduce the DIMM frequency.
Populated RDIMM voltage
1.25V 1.35V 1.5V RBSU setting Output voltage
x x Performance 1.35V
x x Power 1.25V
x x Performance 1.5V
x x Power 1.35V
x x N/A Not allowed. System halts during POST.
x x x N/A Not allowed. System halts during POST.
HP SmartMemory
HP SmartMemory, introduced for Gen8 servers, authenticates HP Qualified memory and verifies whether
installed memory has passed HP qualification and test processes.