2 memory configurations, Memory configurations -12 – Asus M4A78-VM User Manual
Page 22
1.7.2
Memory configurations
You may install 512MB, 1GB, 2GB, and 4GB 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 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 8GB memory modules on Windows
®
XP Professional x64
and Vista x64 editions. You may install a maximum of 4GB DIMMs on each slot.
M4A78-VM Motherboard Qualified Vendors Lists (QVL)
DDR2-1066MHz capability
Size
Vendor
Part No.
SS/
DS
CL
Chip No.
Chip
Brand
DIMM support
A*
B*
512MB
Kingston
KHX8500D2/512
SS
N/A
Heat-Sink Package
Kingston
·
·
512MB
Kingston
KVR1066D2N7/512
SS
N/A
E5108AJBG-1J-E
Elpida
·
·
512MB
Kingston
KHX8500D2K2/1GN
SS
N/A
Heat-Sink Package
Kingston
·
·
1G
Kingston
KHX8500D2K2/2GN
DS
N/A
Heat-Sink Package
Kingston
·
·
1G
Kingston
KVR1066D2N7/1G
DS
N/A
E5108AJBG-1J-E
Elpida
·
·
1G
Kingston
KHX8500D2/1G
DS
N/A
Heat-Sink Package
Kingston
·
·
1G
Qimonda
HYS64T128020EU-19F-C
DS
6
HYB18T512800CF19FFSS24313
Qimonda
·
·
1G
Kingmax
KLED48F-A8K15
DS
N/A
KKA8FFIXF-JFS-18A
Kingmax
·
·
1G
Crucial
BL12864AA1065.8FE5
SS
5-5-5-15
Heat-Sink Package
N/A
·
·
1G
Transcend
TX1066QLJ-2GK1GB
DS
5
Heat-Sink Package
Transced
·
·
2G(kit of 2)
Transcend
TX1066QLU-2GK
SS
5
Heat-Sink Package
Transced
·
·
2G
Transcend
TX1066QLU-4GK
DS
5
Heat-Sink Package
Transced
·
·
1G
OCZ
OCZ2N10662GK
DS
N/A
Heat-Sink Package
OCZ
·
1G
GEIL
GB22GB8500C5DC
SS
5
GL2L128M88BA25AB
GEIL
·
·
1G
GEIL
GB24GB8500C5QC
SS
5
GL2L128M88BA25AB
GEIL
·
·
1G
GEIL
GE22GB1066C5DC
SS
5
Heat-Sink Package
GEIL
·
·
1G
GEIL
GE24GB1066C5QC
SS
5
Heat-Sink Package
GEIL
·
·
2G(kit of 2)
G.SKILL
F2-8500CL5D-2GBPK
DS
5-5-5-15
Heat-Sink Package
N/A
·
·
1G
G.SKILL
F2-8500CL5S-1GBPK
DS
5-5-5-15
Heat-Sink Package
G.SKILL
·
·
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ASUS M4A78-VM