Asus P4SDX P4SDX English Manual Version E1215 - Page 23

• 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. 1.9.3.1 SiS® Dual channel memory controller configuration A. 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 1 Channel 0 DIMM_A1 DIMM_B1 Same size, different type DIMM_A1 B. 3 DIMMs population: 1. 2 x 64 Bit Mode: DIMMs populated on different Channels Channel 1 Channel 0 Channel 0 DIMM_B1 DIMM_A2 DIMM_A2 DIMM_A1 Channel 1 DIMM_B1 Channel 1 DIMM_B1 Different size DIMM_A1 Channel 0 DIMM_A2 DIMM_A1 Channel 1 DIMM_B1 Channel 0 DIMM_A2 DIMM_A1 Channel 1 DIMM_B1 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 DIMM_A1 Channel 1 Channel 1 DIMM_A2 DIMM_B2 DIMM_B2 DIMM_B1 DIMM_A1 DIMM_B1 DIMM_A1 Channel 1 DIMM_B2 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