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NOTE:
Memory configurations listed do not apply to "Factory Integrated Models".
Memory Population Guidelines
For detailed memory configuration rules and guidelines, please use the Online DDR3 Memory Configuration Tool:
www.hp.com/go/ddr3memory-configurator
Some DIMM installation guidelines are summarized below:
For the HP ProLiant WS460c G6 server with twelve (12) memory slots:
There are three (3) channels per processor; six (6) channels per server
There are two (2) DIMM slots for each memory channel; twelve (12) total slots.
Memory channel 1 consists of the two (2) DIMMs that are closest to the processor
Memory channel 3 consists of the two (2) DIMMs that are furthest from the processor
DIMM slots that are white should be populated first
Do not mix Unbuffered memory (UDIMMs) with Registered memory (RDIMMs).
Do not install DIMMs if the corresponding processor is not installed
If only one processor is installed in a 2CPU system, only half of the DIMM slots are available
To maximize performance, balance the total memory capacity between all installed processors
It is not required, but it is recommended to load the channels similarly if possible
You can only have up to eight (8) ranks installed per channel
You can only install two quad-rank DIMMs per channel
You can only install two UDIMMs per channel; if available, the third slot in the channel must remain empty
Populate DIMMs from heaviest load (quad-rank) to lightest load (single-rank) within a channel
Heaviest load (DIMM with most ranks) within a channel goes furthest from the chipset
For memory mirroring mode, channel 3 must be unpopulated. Channels 1 and 2 are populated identically
For lock-step mode, channel 3 must be unpopulated. DIMMs in channels 1 and 2 will be installed in pairs. The paired slots will
be 1,4; 2,5; 3;6 on a 3DPC system or 1,4; 2,5; on a 2DPC system
No mixing DIMM voltage; all DIMMs must be the same voltage
DIMM Type
Registered DIMMS (RDIMMs)
DIMM Rank
Dual Rank (2R)
Quad Rank
(4R)
DIMM Capacity
2GB 4GB 8GB 8GB 4GB
DIMM Native Speed (MHz)
1333 1333 1066 1333 1066
12 slot servers
12 12 12 12 12
24 48 96 96 48
1 DIMM Per Channel
1333 1333 1066 1333 1066
2 DIMM Per Channel
1066
*
1066
*
1066 1066
*
800
3 DIMM Per Channel
800 800 800 800
not supported
NOTES:
Mixing DIMM speeds is allowed, but the system processor speed rules always override the DIMM capabilities
If you do mix DIMM speeds, the memory bus will default to the minimum clock rate of all DIMMs in the system - even if the
slower DIMM is on the other processor
If you install 1x 1066MHz DIMM in channel 1 and 1x 1333MHz DIMM in channel 2, you still run at 1066MHz
If you install 1x 1066MHz DIMM in channel 1 and 5x 1333MHz DIMMs with 1 DIMM Per Channel (DPC) in each of the
other channels, you run at 1066MHz
If you install 3DPC in one channel (if applicable) and 1DPC in all other channels, you run at 800MHz
QuickSpecs
HP ProLiant WS460c Generation 6 (G6)
Workstation Blade
Memory
DA - 13429 Worldwide QuickSpecs — Version 3 — 2.16.2010
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