Asus P5W DH 2.4.1Overview, 2.4.2Memory configurations, 2.4System memory, Channel, Sockets, P5W DH DELUXE 240-pinDDR2 DIMM sockets

2.4System memory

2.4.1Overview

The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets.

A DDR2 module has the same physical dimensions as a DDR DIMM but has a

240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to prevent installation on a DDR DIMM socket.

The figure illustrates the location of the DDR2 DIMM sockets:

P5W DH DELUXE

DIMM A1 DIMM A2 DIMM B1 DIMM B2

P5W DH DELUXE 240-pin DDR2 DIMM sockets

Channel	Sockets
Channel A	DIMM_A1 and DIMM_A2
Channel B	DIMM_B1 and DIMM_B2

2.4.2Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC/non-ECC DDR2 DIMMs into the DIMM sockets.

•For dual-channel configuration, the total size of memory module(s) installed per channel must be the same (DIMM_A1 + DIMM_A2 = DIMM_B1 + DIMM_B2).

•Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Visit the ASUS website (www.asus.com) for the latest

Qualified Vendors List.

•For dual-channel memory configuration, install the DIMMs in slots DIMM_B1 and DIMM_A1 (orange slots); install another pair of DIMMs in slots DIMM_B2 and DIMM_A2 (black slots).

2-14 Chapter 2: Hardware information