Asus P5B-VM DO 1.7.1Overview, 1.7.2Memory configurations, 1.7System memory, P5B-VMDO 240-pinDDR2 DIMM socket

1.7System memory

1.7.1Overview

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:

P5B-VM DO	112 Pins	DIMM A1	DIMM A2	DIMM B1	DIMM B2
	128 Pins

P5B-VM DO 240-pin DDR2 DIMM socket

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

Install at least a memory module in DIMM_A1 or DIMM_A2 slot to support the Intel® Quiet System Technology and for optimum performance. Otherwise, system will halt.

1.7.2Memory configurations

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

1-18 Chapter 1: Product introduction