HP ProLiant SL4545 HP ProLiant SL4545 G7 Server Node User Guide - Page 34

DIMM identification, Memory configurations, Description, Definition

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DIMM identification To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and table. Item Description 1 Size 2 Rank 3 Data width 4 Voltage rating 5 Memory speed 6 DIMM type Definition - 1R = Single-rank 2R = Dual-rank 3R = Three-rank 4R = Quad-rank x4 = 4-bit x8 = 8-bit L = Low voltage (1.35V) U = Ultra low voltage (1.25V) Blank or omitted = Standard 12800 = 1600-MT/s 10600 = 1333-MT/s 8500 = 1066-MT/s R = RDIMM (registered) E = UDIMM (unbuffered with ECC) L = LRDIMM (load reduced) For the latest supported memory information, see the QuickSpecs on the HP website (http://h18000.www1.hp.com/products/quickspecs/ProductBulletin.html). At the website, choose the geographic region, and then locate the product by name or product category. Memory configurations To optimize node availability, the node supports Advanced ECC, which provides up to 4-bit error correction. This mode is the default option for this node. Hardware options installation 34

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Hardware options installation 34
DIMM identification
To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and
table.
Item
Description
Definition
1
Size
—
2
Rank
1R = Single-rank
2R = Dual-rank
3R = Three-rank
4R = Quad-rank
3
Data width
x4 = 4-bit
x8 = 8-bit
4
Voltage rating
L = Low voltage (1.35V)
U = Ultra low voltage (1.25V)
Blank or omitted = Standard
5
Memory speed
12800 = 1600-MT/s
10600 = 1333-MT/s
8500 = 1066-MT/s
6
DIMM type
R = RDIMM (registered)
E = UDIMM (unbuffered with ECC)
L = LRDIMM (load reduced)
For the latest supported memory information, see the QuickSpecs on the HP website
(
). At the website, choose the
geographic region, and then locate the product by name or product category.
Memory configurations
To optimize node availability, the node supports Advanced ECC, which provides up to 4-bit error correction.
This mode is the default option for this node.