Asus P5WDG2 WS Professional User Manual download pdf (Page 40)

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Chapter 2: Hardware informationChapter 2: Hardware information

Chapter 2: Hardware information

2.4 System memory

2.4.12.4.1

2.4.1

OverviewOverview

Overview

The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline

Memory Modules (DIMM) sockets.

A DDR2 module has the same physical dimensions as a DDR DIMM but has a

240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are

notched differently to prevent installation on a DDR DIMM socket.

The figure illustrates the location of the DDR2 DIMM sockets:

• For dual-channel configuration, the total size of memory module(s)

installed per channel must be the same (DIMM_A1 + DIMM_A2 =

DIMM_B1 + DIMM_B2).

• Always install DIMMs with the same CAS latency. For optimum

compatibility, it is recommended that you obtain memory modules

from the same vendor. Visit the ASUS website (www.asus.com) for

the latest Qualified Vendors List.

• Due to chipset resource allocation, the system may detect less than

8 GB system memory when you installed four 2 GB DDR2 memory

modules.

• This motherboard does not support memory modules made up of

128 Mb chips or double sided x16 memory modules.

ChannelChannel

Channel

SocketsSockets

Sockets

Channel AChannel A

Channel A

DIMM_A1 and DIMM_A2DIMM_A1 and DIMM_A2

DIMM_A1 and DIMM_A2

Channel BChannel B

Channel B

DIMM_B1 and DIMM_B2DIMM_B1 and DIMM_B2

DIMM_B1 and DIMM_B2

2.4.22.4.2

2.4.2

Memory configurationsMemory configurations

Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC and

non-ECC DDR2 DIMMs into the DIMM sockets.

P5WDG2-WS PRO

P5WDG2-WS PRO 240-pin DDR2 DIMM sockets

DIMM_A2

DIMM_A1

DIMM_B2

DIMM_B1

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