Asus P5QC User Manual download pdf (Page 37)

ASUS P5QC 2-11

2.4 System memory

2.4.1 Overview

The motherboard comes with two Double Data Rate 3 (DDR3) and four Double

Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets.

A DDR3 module has the same physical dimensions as a DDR2/DDR DIMM but

is notched differently to prevent installation on a DDR2/DDR DIMM socket, while

a DDR3/DDR2 module has a 240-pin footprint compared to the 184-pin DDR

DIMM. DDR3 modules are developed for better performance with less power

consumption. The gure illustrates the location of the DDR3/DDR2 DIMM sockets:

Channel Sockets

Channel A DIMM_A1 and DIMM_A2

Channel B DIMM_B1 and DIMM_B2

DDR3 module installation

DDR2 module installation

• You can only install either DDR2 module(s) or DDR3 module(s) on the

motherboard; otherwise, the system will not boot up.

• DDR2 1066MHz DIMMs work only on the black slots for one DIMM per

channel. Ensure to install the DDR2 1066MHz DIMMs ONLY on the BLACK

slots!

Channel Sockets

Channel A DDR3_DIMM_A1

Channel B DDR3_DIMM_B1

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 187 188

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Asus P5QC User Manual Page 37