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Chapter 2: Hardware informationChapter 2: Hardware information
Chapter 2: Hardware informationChapter 2: Hardware information
Chapter 2: Hardware information
2.4 System memory
2.4.12.4.1
2.4.12.4.1
2.4.1
OverviewOverview
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
ChannelChannel
Channel
SocketsSockets
SocketsSockets
Sockets
Channel AChannel A
Channel AChannel A
Channel A
DIMM_A1 and DIMM_A2DIMM_A1 and DIMM_A2
DIMM_A1 and DIMM_A2DIMM_A1 and DIMM_A2
DIMM_A1 and DIMM_A2
Channel BChannel B
Channel BChannel B
Channel B
DIMM_B1 and DIMM_B2DIMM_B1 and DIMM_B2
DIMM_B1 and DIMM_B2DIMM_B1 and DIMM_B2
DIMM_B1 and DIMM_B2
2.4.22.4.2
2.4.22.4.2
2.4.2
Memory configurationsMemory configurations
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.
P5W64 WS PRO
®
P5W64 WS PRO 240-pin DDR2 DIMM sockets
DIMM_A2
DIMM_A1
DIMM_B2
DIMM_B1
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General
Weight and Dimensions
