Asus PP-DLW 2.5.2 Memory Configurations, Important notes on memory configurations, Table, Table 2 Memory frequency/CPU FSB synchronization, Mode, DDR1, DDR4, DDR2, DDR3

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			DDR1	Sockets		DDR4
					DDR2	DDR3
	Single-channel		(1)	Module A	—	—	—
			(2)	—	—	Module A	—
			(3)	Module A	—	Module A	—
			(4)	Module A	—	Module B	—
	Dual-channel		(1)	Module A	Module A	—	—
			(2)	—	—	Module A	Module A
			(3)	Module A	Module A	Module A	Module A
			(4)	Module A	Module A	Module B	Module B

Table 2 Memory frequency/CPU FSB synchronization

CPU FSB	DDR DIMM Type	Memory Frequency
533 MHz	PC2100	266 MHz
400 MHz	PC1600	200 MHz

ASUS PP-DLW motherboard user guide 2-9