ASUS P5N64 WS Manual De Usuario

2-14

Chapter 2: Hardware information

•  You may install varying memory sizes in Channel A and Channel B. The 

system maps the total size of the lower-sized channel for the dual-channel 

configuration. Any excess memory from the higher-sized channel is then 

mapped for single-channel operation.

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

compatibility, it is recommended that you obtain memory modules from the 

same vendor. 

•  If you install four 1GB memory modules, the system may only recognize 

less than 3GB of total memory because of address space allocation for 

other critical functions. This limitation appears on Windows

®

 Vista 32-bit / 

Windows

®

 XP 32-bit operation systems since it does not support Physical 

Address Extension (PAE) mode. 

•  If you install Windows

®

 Vista 32-bit / Windows

®

 XP 32-bit operation system, 

a total memory of less than 3GB is recommended.

•  This motherboard does not support memory modules made up of 128 Mb 

chips or double sided x16 memory modules.

Due to OS limitation, this motherboard can only support up to 8 GB on the 

operating systems listed below. You may install a maximum of 2 GB DIMMs on 

each slot. 

 

 

 

 

Windows

®

 XP Professional x64 Edition 

Windows

® 

Vista x64 Edition

You may install 512 MB, 1 GB, and 2 GB unbuffered DDR3 DIMMs into the DIMM 

sockets.
Recommended Memory Configurations

Mode

Sockets

DIMM_A1

DIMM_A2

DIMM_B1

DIMM_B2

Single-Channel

Populated

—

—

—

—

—

Populated

—

Dual-channel (1)

Populated

—

Populated

—

Dual-channel (2)

Populated

Populated

Populated

Populated