Asus P4RD1-MX Motherboard DIY Troubleshooting Guide - Page 24

Memory Configurations

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1.7.2 Memory Configurations You may install 64MB, 128MB, 256 MB, 512 MB and 1 GB unbuffered non-ECC DDR DIMMs into the DIMM sockets using the memory configurations in this section. • For dual channel configuration, the total size of memory module(s) installed per channel must be the same (DIMM A1=DIMM B1). • Installing DDR DIMMs other than the recommended configurations may cause memory sizing error or system boot failure. Use any of the recommended configurations in Table 1. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Due to chipset limitation, DIMM modules with double-sided x16 memory chips are not supported in this motherboard. • Visit the ASUS website for the latest DDR 400 MHz (FSB 800/533) Qualified Vendors Lists. Table 1 Recommended memory configurations For dual-channel configuration, the total size of memory module(s) installed per channel must be the same to ensure optimum performance. Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 1-12 Chapter 1: Product introduction

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1-12
Chapter 1: Product introduction
1.7.2
Memory Configurations
You may install 64MB, 128MB, 256 MB, 512 MB and 1 GB unbuffered
non-ECC DDR DIMMs into the DIMM sockets using the memory configurations
in this section.
For dual channel configuration, the total size of memory module(s)
installed per channel must be the same (DIMM A1=DIMM B1).
Installing DDR DIMMs other than the recommended configurations
may cause memory sizing error or system boot failure. Use any of
the recommended configurations in Table 1.
Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules
from the same vendor.
Due to chipset limitation, DIMM modules with double-sided x16
memory chips are not supported in this motherboard.
Visit the ASUS website for the latest DDR 400 MHz (FSB 800/533)
Qualified Vendors Lists.
Table 1 Recommended memory configurations
For dual-channel configuration, the total size of memory module(s) installed
per channel must be the same to ensure optimum performance.
Channel
Sockets
Channel A
DIMM_A1
Channel B
DIMM_B1