Asus M2N68 SE User Manual - Page 21

Memory configurations - mb

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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 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 install a 64-bit Windows OS when having 4GB or more memory installed on the motherboard. • This motherboard does not support memory modules made up of 128 Mb chips. The motherboard can support 4 GB physical memory on the operating system listed below. You may install a maximum of 2 GB DIMMs on each slot. 64-bit Windows® XP Professional x64 Edition Windows® Vista x64 Edition M2N68 SE Motherboard Qualified Vendors Lists (QVL) DDR2-1066MHz capability Size 1G 1G 1G 512MB 1G Vendor Kingston Corsair Corsair ADATA ADATA Model CL KHX8500D2K2/2GN N/A CM2X1024-8500C5 N/A CM2X1024-8500C5D 5 M2OMIDG3H3160INC5Z 5 M2OMIDG314720INC5Z 5 Brand Kingston Corsair Corsair ADATA ADATA SS/DS Component SS Heat-Sink Package DS Heat-Sink Package DS Heat-Sink Package SS Heat-Sink Package DS Heat-Sink Package DIMM support A* B* • • • • • • • • • • • Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is supported per channel. When four 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. Chapter 1: Product introduction 1-11

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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 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 install a 64-bit Windows OS when having 4GB or more
memory installed on the motherboard.
•
This motherboard does not support memory modules made up of 128 Mb
chips.
The motherboard can support 4 GB physical memory on the operating system listed below.
You may install a maximum of 2 GB DIMMs on each slot.
64-bit
Windows
®
XP Professional x64 Edition
Windows
®
Vista x64 Edition
M2N68 SE Motherboard Qualified Vendors Lists (QVL)
DDR2-1066MHz capability
Size
Vendor
Model
CL
Brand
SS/DS
Component
DIMM support
A*
B*
1G
Kingston
KHX8500D2K2/2GN
N/A
Kingston
SS
Heat-Sink Package
•
•
1G
Corsair
CM2X1024-8500C5
N/A
Corsair
DS
Heat-Sink Package
•
•
1G
Corsair
CM2X1024-8500C5D
5
Corsair
DS
Heat-Sink Package
•
•
512MB
ADATA
M2OMIDG3H3160INC5Z
5
ADATA
SS
Heat-Sink Package
•
•
1G
ADATA
M2OMIDG314720INC5Z
5
ADATA
DS
Heat-Sink Package
•
•
•
Due to AM2+ CPU limitation, only one DDR2 1066 DIMM is supported per channel.
When four 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.
Chapter 1: Product introduction
1-11