Asus P4SDX A. 2 DIMMs population:, B. 3 DIMMs population:, C. 4 DIMMs population:, ASUS P4SDX motherboard user guide

•Use only the following combinations to install DDR DIMMs. Otherwise, the system may not work properly.

•DIMM modules are limited only to a total combination of 18 chip devices.

•PC1600 DDR is only supported in 400MHz FSB.

•Stacked memory DIMM models are not supported by this motherboard.

1.9.3.1SiS® Dual channel memory controller configurationA. 2 DIMMs population:

1. 128 Bit Mode: Exactly the same size and type DIMMs on Channels 0 and 1.

Channel 0 Channel 1

DIMM_A1 DIMM_B1

2. 2 x 64 Bit Mode: DIMMs installed on different Channels.

Channel 0 Channel 1Channel 0

DIMM_A1	DIMM_B1	Same size,	DIMM_A1	Channel 1	Different
		different type		DIMM_B1	size

B. 3 DIMMs population:

1. 2 x 64 Bit Mode: DIMMs populated on different Channels

Channel 1

Channel 0 DIMM_B1

DIMM_A2

DIMM_A1

Channel 0 Channel 1

DIMM_A2 DIMM_B1

DIMM_A1

Channel 0

DIMM_A2

DIMM_A1 Channel 1

DIMM_B1

Channel 0

DIMM_A2 Channel 1

DIMM_B1

DIMM_A1

C. 4 DIMMs population:

1. 2 x 64 Bit Mode: DIMMs populated on different Channels

Channel 0		Channel 0
DIMM_A2		DIMM_A2		Channel 0	Channel 1
DIMM_A1	Channel 1		Channel 1	DIMM_A2	DIMM_B2
	DIMM_B2
			DIMM_B2
	DIMM_B1	DIMM_A1	DIMM_B1	DIMM_A1
					DIMM_B1

2. 128 Bit Mode: Exactly the same size and type DIMMs on Channels 0 and 1.

Channel 0	Channel 1	Channel 0	Channel 1	Channel 0	Channel 1
DIMM_A2	DIMM_B2	DIMM_A2	DIMM_B2	DIMM_A2	DIMM_B2
DIMM_A1	DIMM_B1	DIMM_A1	DIMM_B1	DIMM_A1
					DIMM_B1

Refer to section “2.4.1 Chip Configuration” for BIOS setup details.

ASUS P4SDX motherboard user guide 1-13