Asus A8V A8V-VM User's Manual for English Edition - Page 24

System memory - windows 7

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1.7 System memory 1.7.1 Overview The motherboard comes with four 184-pin Double Data Rate (DDR) Dual Inline Memory Module (DIMM) sockets. The following figure illustrates the location of the sockets: DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2 A8V-VM R A8V-VM 184-pin DDR DIMM Sockets Dual-channel mode Pair 1 Pair 2 Sockets DIMM_A1 and DIMM_B1 DIMM_A2 and DIMM_B2 1.7.2 Memory configurations You may install 128 MB, 256 MB, 512 MB, and 1 GB unbuffered ECC or non-ECC DDR DIMMs into the DIMM sockets using the memory configuration in this section. • If you install four 1 GB memory modules, the system may detect less than 3 GB of the total memory because of address space allocation for other critical functions. This limitation applies to Windows XP 32-bit version operating system since it does not support Physical Address Extension(PAE). • When using one DDR DIMM module, insert it into slot DIMM_B1 only. • When using two DDR DIMM modules, insert them into DIMM_A1 and DIMM_B1 slots. • Always install DIMMs with the same CAS latency. For optimum compatibility, we recommend that you obtain memory modules from the same vendor. Refer to the DDR400 Qualified Vendors List on the next page for details. 1-12 Chapter 1: Product introduction

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1-1±
Chapter 1: Product introduction
1.7
System memory
1.².1 Overview
The motherboard comes with four 184-pin Double Data Rate (DDR) Dual
Inline Memory Module (DIMM) sockets.
The following figure illustrates the location of the sockets:
•
If you install four 1 GB memory modules, the system may detect less
than 3 GB of the total memory because of address space allocation
for other critical functions. This limitation applies to Windows XP
3±-bit version operating system since it does not support Physical
Address Extension(PAE).
•
When using one DDR DIMM module, insert it into slot DIMM_B1 only.
•
When using two DDR DIMM modules, insert them into DIMM_A1 and
DIMM_B1 slots.
•
Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from
the same vendor. Refer to the DDR400 Qualified Vendors List on the
next page for details.
1.².±
Memory configurations
You may install 1±8 MB, ±56 MB, 51± MB, and 1 GB unbuffered ECC or
non-ECC DDR DIMMs into the DIMM sockets using the memory configuration
in this section.
A8V-VM 184-pin DDR DIMM Sockets
A8V-VM
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
Dual-channel mode
Sockets
Pair 1
DIMM_A1 and DIMM_B1
Pair ±
DIMM_A± and DIMM_B±