![](http://pdfasset.owneriq.net/7/08/7085a0ef-888c-4c6b-961f-fe5ca20146d9/7085a0ef-888c-4c6b-961f-fe5ca20146d9-bg17.png)
1.5 System memory
1.5.1 Overview
This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched
differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for
better performance with less power consumption.
The gure illustrates the location of the DDR3 DIMM sockets:
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1
A85XM-A
A85XM-A 240-pin DDR3 DIMM sockets
DIMM_A1
DIMM_B1
ASUS A85XM-A
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