1-16 Chapter 1: Product introduction
1.7 System memory
1.7.1 Overview
The motherboard comes with four 184-pin Double Data Rate (DDR) Dual
Inline Memory Modules (DIMM) sockets.
The following gure illustrates the location of the sockets:
• If you installed four 1 GB memory modules, the system may detect
less than 3 GB of 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)
• Installing DDR DIMMs other than the recommended congurations
may cause memory sizing error or system boot failure. Use any of
the recommended congurations in Table 1.
• In dual‑channel congurations, install only identical (the same type
and size) DDR DIMM pairs for each channel.
• Always install DIMMs with the same CAS latency. For optimum
compatability, it is recommended that you obtain memory modules
from the same vendor.
• DIMMs installed into any three sockets will function in single-channel
mode.
1.7.2 Memory configurations
You may install 64MB,128 MB, 256 MB, 512 MB, and 1 GB DDR DIMMs into
the DIMM sockets using the memory conguration in this section.
P5P800-VM 184-pin DDR DIMM sockets
P5P800-VM
DIMM_A2
DIMM_A1
DIMM_B2
DIMM_B1