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