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Continued on the next page) – Asus M4A78 PLUS User Manual

Page 23

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1.7.2

Memory configurations

You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR2 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 configuration. Any excess

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

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

recommend that you obtain memory modules from the same vendor.

• 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 Windows

®

OS.

-

Install a 64-bit Windows

®

OS when you want to install 4GB or more memory on

the motherboard.

• This motherboard does not support DIMMs made up of 256 megabits (Mb) or less.

The motherboard supports up to 16GB memory modules on Windows

®

XP Professional x64

and Vista x64 editions. You may install a maximum of 4GB DIMMs on each slot.

M4A78 PLUS Motherboard Qualified Vendors Lists (QVL)
DDR2-667MHz capability

Size

Vendor

Part No.

SS/

DS

CL

Chip No.

Chip

Brand

DIMM support

A*

B*

C*

2G

Kingston

KVR667D2N5/2G

DS

N/A

7RE22 D9HNL

Micron

·

·

·

512MB

Kingston

KVR667D2N5/512

SS

N/A

SO1237650821 SBP D6408TR4C

GL25USL074905PECNB

Kingston

·

·

·

2G

Kingston

KVR667D2N5/2G

DS

N/A

E1108ACBG-8E-E 0813A90CC

Elpida

·

·

·

1G

Kingston

KVR667D2N5/1G

DS

N/A

SO1280420822 SOP D6408TR4C

GL25USL156304PECXA

Kingston

·

·

·

512MB

Qimonda

HYS64T64000EU-3S-B2

SS

5

HYB18T512B00B2F3SFSS28171

Qimonda

·

·

·

1G

Qimonda

HYS64T128020EU-3S-B2

DS

5

HYB18T512B00B2F3SFSS28171

Qimonda

·

·

·

1G

Corsair

VS1GB667D2

DS

N/A

MID095D62864M8CEC

Corsair

·

·

·

1G

Corsair

XMS2-5400

DS

4

Heat-Sink Package

Corsair

·

·

·

512MB

Kingmax

KLCC28F-A8KB5

SS

N/A

KKEA88B4LAUG-29DX

Kingmax

·

·

·

1G

Kingmax

KLCD48F-A8KB5

DS

N/A

KKEA88B4LAUG-29DX

Kingmax

·

·

·

512MB

Apacer

AU512E667C5KBGC

SS

5

AM4B5708MIJS7E0627B

Apacer

·

·

·

512MB

Apacer

AU512E667C5KBGC

SS

5

AM4B5708GQJS7E06332F

Apacer

·

·

·

(continued on the next page)

Chapter 1: Product introduction

1-13