Asus P9D-X User Guide - Page 34

System memory, Memory Configurations

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2.4 System memory 2.4.1 Overview The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules (DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption. The figure illustrates the location of the DDR3 DIMM sockets: 2.4.2 Memory Configurations You may install 2 GB, 4 GB, and 8 GB Unbuffered with ECC DDR3 DIMMs into the DIMM sockets using the memory configurations in this section. DIMM Slot Per DIMM Populated Channel per Channel UDIMM DIMM Type 2 1 Unbuffered DDR3 2 2 Unbuffered DDR3 Speed Rank per DIMM 1333/1600 Single Rank, Dual Rank 1333/1600 Single Rank, Dual Rank • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Start installing the DIMMs in slots A2 and B2 (Blue). 2-14 Chapter 2: Hardware information

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2-14
Chapter 2: Hardware information
2.4
System memory
2.4.1
Overview
The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The figure illustrates the location of the DDR3 DIMM sockets:
2.4.2
Memory Configurations
You may install 2 GB, 4 GB, and 8 GB Unbuffered with ECC DDR3 DIMMs into the DIMM
sockets using the memory configurations in this section.
UDIMM
DIMM Slot Per
Channel
DIMM Populated
per Channel
DIMM Type
Speed
Rank per DIMM
2
1
Unbuffered DDR3
1333/1600
Single Rank, Dual Rank
2
2
Unbuffered DDR3
1333/1600
Single Rank, Dual Rank
•
Always install DIMMs with the same CAS latency. For optimum compatibility, it is
recommended that you obtain memory modules from the same vendor.
•
Start installing the DIMMs in slots A2 and B2 (Blue).