Asus M3A76-CM User Manual download pdf (Page 22)

1.7.2 Memory congurations

You may install 512MB, 1GB and 2GB unbuffered ECC/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 conguration. 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 8GB memory modules on Windows

XP Professional x64

and Vista x64 editions. You may install a maximum of 2 GB DIMMs on each slot.

M3A76-CM Motherboard Qualied Vendors Lists (QVL)

DDR2-1066MHz capability

• Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is supported per channel.

When two DDR2 1066 DIMMs are installed, all DIMMs run at 800Mhz frequency by

default for system stability.

• The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the

standard way of accessing information from a memory module. Under the default state,

some memory modules for overclocking may operate at a lower frequency than the

vendor-marked value.

Size Vendor Part No. CL Chip Brand

SS/

Chip No.

DIMM support

(Optional)

A* B* C*

512MB Kingston KVR1066D2N7/512 N/A Elpida SS E5108AJBG-1J-E • •

1G Kingston KHX8500D2/1G N/A Kingston DS Heat-Sink Package • •

1G Qimonda HYS64T128020EU-19F-C 6 Qimonda DS HYB18T512800CF19FFSS24313 • •

1G Kingmax KLED48F-A8K15 N/A Kingmax DS KKA8FFIXF-JFS-18A • •

1G Transcend TX1066QLJ-2GK1GB 5 Transced DS Heat-Sink Package • •

1G OCZ OCZ2N1066SR2DK N/A OCZ DS Heat-Sink Package • •

1G GEIL GE22GB1066C5DC 5 GEIL DS Heat-Sink Package • •

1G GEIL GE24GB1066C5QC 5 GEIL DS Heat-Sink Package • •

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Asus M3A76-CM User Manual Page 22

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