Asus P4PE 2.5.2 Memory configurations, DDR DIMM1, DDR DIMM2, DDR DIMM3, None, SS/DS, SS/DS, (Rows 0&1), (Rows 2&3), (Rows 3&2)

2.5.2 Memory configurations

You may install any DDR DIMMs with 64MB, 128MB, 256MB, 512MB, and 1GB densities into the DIMM sockets.

Use only the following combinations to install DDR DIMMs. Otherwise, the system may not boot up.

DDR DIMM1	DDR DIMM2	DDR DIMM3
(Rows 0&1)	(Rows 2&3)	(Rows 3&2)
SS/DS	DS	None
SS/DS	SS	SS

*SS - Single-sided DIMM DS - Double-sided DIMM

1.DDR DIMM sockets 2 and 3 share the same rows, so if you install a double-sided DIMM into DIMM2 socket, you must leave DIMM3 socket empty.

2.You may install single-sided DIMMs into DIMM2 and DIMM3 sockets at the same time but neither one can be x16 DDR module.

3.Double-sided x16 DDR DIMMs are not supported on this motherboard.

ASUS P4PE motherboard user guide 2-11