Asus H61M-G Specifications download pdf (Page 15)

1.4 System memory

1.4.1 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

H61M-G

H61M-G 240-pin DDR3 DIMM sockets

DIMM_A1

DIMM_B1

1.4.2 Memory congurations

You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM

sockets.

• You may install varying memory sizes in Channel A and Channel B. The system maps

the total size of the lower-sized channel for the dual-channel conguration. Any excess

memory from the higher-sized channel is then mapped for single-channel operation.

• Due to Intel

chipset limitation, DDR3 1600MHz and higher memory modules on XMP

mode will run at the maximum transfer rate of DDR3 1600MHz.

• Always install DIMMs with the same CAS latency. For optimal compatibility, we

recommend that you install memory modules of the same version or date code (D/C)

from the same vendor. Check with the retailer to get the correct memory modules.

• Due to the memory address limitation on 32-bit Windows

OS, when you install 4GB

or more memory on the motherboard, the actual usable memory for the OS can be

about 3GB or less. For effective use of memory, we recommend that you do any of the

following:

- Use a maximum of 3GB system memory if you are using a 32-bit WindowsUse a maximum of 3GB system memory if you are using a 32-bit Windows

OS.

- Install a 64-bit WindowsWindows

OS if you want to install 4GB or more on the

motherboard.

• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.

ASUS H61M-G

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Asus H61M-G Specifications Page 15