HP ProLiant DL160se - G6 Server Introduction Manual page 9

• RDIMM configurations can provide larger memory capacity configuration because the memory
controller only drives the address and command signals to a single register chip, thereby reducing
the electrical load on the memory controller. Users requiring large memory footprints can install
three 8-GB RDIMMs per channel for a total of 144 GB.
• For smaller memory configurations, installing only one or two DIMMs per memory channel can
potentially increase memory performance. In many instances this allows administrators to clock the
memory channel at a higher data rate.
Processor SKU determines the ability of ProLiant G6 servers to run DDR-3 memory at a top speed of
1333 MT/s. The processor SKU also dictates the range of speeds possible in different DIMM per
channel (DPC) configurations. DIMM operating speeds are also subject to memory slot configuration
and to the number of slots (4, 6, 12, 16, or 18). Table 2 displays DIMM speeds possible in 100-
series G6 servers with a Xeon X5500 (95W), W5500 (130W), or 3400 (95W) processor.
Table 2. DDR-3 memory options on 100-series G6 servers supporting Xeon 5500 or 3400 Series processors
running at 95W or 130W
Capacity
DIMM Type
(GB)
PC3-8500R RDIMM
PC3-8500R RDIMM
PC3-
RDIMM
10600R
PC3-
RDIMM
10600R
PC3-
RDIMM
10600R
PC3-
UDIMM
10600E
PC3-
UDIMM
10600E
UDIMMs will not run at 1333 MT/s data rates with two DIMMs per channel on systems that support three DIMM sockets per
*
channel. Support for 1333 MT/s data rate with two DIMMs may require a ROM upgrade.
** Applies to half-width system boards with 16 slots like the G6 DL170h
A BIOS setting on select ProLiant 100-series G6 servers allows the PC3-10600R memory modules to
run at 1333 MT/s with two DIMMs per channel. HP design and testing have produced system boards
with signal integrity that can operate at 1333 speeds in this configuration without degradation.
Only HP branded DIMMs have been fully validated to operate at this speed. Therefore, HP does not
recommend configuring the BIOS setting for 1333 MT/s data rates with two DIMMs per channel
when using third-party DIMMs, because they may not meet HP's stringent design requirements.
Operating the memory at 1333 MT/s is supported only on select 100-series G6 servers using Xeon
3400 or 5500 Series processors operating at 95W or 130W.
For help configuring DDR-3 memory in ProLiant G6 servers, use the DDR-3 Memory Configuration Tool
found at http://h18004.www1.hp.com/products/servers/options/tool/hp_memtool.html.
Rank
2 DPC in
1 DPC
4 slots
4 quad 1066 N/A
8 dual 1066 N/A
2 dual 1333 1333
4 dual 1333 1333
8 dual 1333 N/A
1 single 1333 1333
2 dual 1333 1333
Max. data rate in MT/s
DIMMs per channel (DPC)
2 DPC in
2 DPC in 3 DPC in
16** and
6 slots 6 slots
18 slots
1066 N/A 800
N/A N/A 1066
1333 800 1333
1333 800 1333
N/A N/A 1333
1333 N/A 1066
1333 N/A 1066
3 DPC in
2 DPC in
16** and
12 slots
18 slots
800 N/A
1066 800
1333 800
1333 800
1333 800
1333 * N/A
1333 * N/A
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