Memory Configurations; Qualified Vendors Lists - Asus M3A78-CM User Manual

1.7.2

Memory configurations

You may install 256MB, 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
• Always install DIMMs with the same CAS latency. For optimum compatibility, we
• Due to the memory address limitation on 32-bit Windows
• This motherboard does not support DIMMs made up of 256 megabits (Mb) or less.
The motherboard supports up to 8GB memory modules on Windows
and Vista x64 editions. You may install a maximum of 2 GB DIMMs on each slot.
M3A78-CM Motherboard Qualified Vendors Lists (QVL)
DDR2-1066MHz capability
Size Vendor
512MB Kingston
1G Kingston
1G Qimonda
1G Kingmax
1G Transcend
1G OCZ
1G GEIL
1G GEIL
• Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is supported per channel.
• The default DIMM frequency depends on its Serial Presence Detect (SPD), which is the
1-12
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.
recommend that you obtain memory modules from the same vendor.
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
- Install a 64-bit Windows
the motherboard.
Part No. CL
KVR1066D2N7/512 N/A
KHX8500D2/1G N/A
HYS64T128020EU-19F-C 6
KLED48F-A8K15 N/A
TX1066QLJ-2GK1GB 5
OCZ2N1066SR2DK N/A
GE22GB1066C5DC 5
GE24GB1066C5QC 5
When two DDR2 1066 DIMMs are installed, all DIMMs run at 800Mhz frequency by
default for system stability.
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.
OS when you want to install 4GB or more memory on
®
SS/
Chip Brand Chip No.
DS
Elpida SS E5108AJBG-1J-E
Kingston DS Heat-Sink Package
Qimonda DS HYB18T512800CF19FFSS24313
Kingmax DS KKA8FFIXF-JFS-18A
Transced DS Heat-Sink Package
OCZ DS Heat-Sink Package
GEIL DS Heat-Sink Package
GEIL DS Heat-Sink Package
OS, when you install 4GB
®
XP Professional x64
®
DIMM support
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ASUS M3A78-CM
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