Asus PP-DLW PP-DLW User Manual - Page 35

2.5.2 Memory Configurations You may install 64MB, 128MB, 256MB, 512MB, 1GB, or 2GB Double Data Rate (DDR) DIMMs into the four DIMM sockets using the memory configurations presented in this section. Important notes on memory configurations 1. Installing DDR DIMMs other than the recommended configurations may cause memory sizing error or system boot failure. See Table 1 for the recommended configurations. 2. Install only identical (the same type and size) DDR DIMM pairs using the recommended configurations. 3. Make sure that the memory frequency matches the CPU FSB (Front Side Bus). Refer to Table 2 below. 4. DO NOT mix unbuffered and registered DIMMs in any configuration. Table 1 Recommended memory configurations Mode Single-channel Dual-channel DDR1 (1) Module A (2) - (3) Module A (4) Module A (1) Module A (2) - (3) Module A (4) Module A Sockets DDR2 DDR3 - - - - Module A - Module A Module A - Module A Module A Module B - Module A Module A Module B DDR4 - - - - - Module A Module A Module B Table 2 Memory frequency/CPU FSB synchronization CPU FSB 533 MHz 400 MHz DDR DIMM Type PC2100 PC1600 Memory Frequency 266 MHz 200 MHz ASUS PP-DLW motherboard user guide 2-9