Asus A8V-VM - Manual (Page 24)

1-1 Chapter 1: Product introduction
1.7 System memory
1..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.. Memory configurations
You may install 18 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
R
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