Asus P5N7A-VM Hardware User Manual page 31

• 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,
it is recommended that you obtain memory modules from the same vendor.
• When installing total memory of 4GB capacity or more, Windows
operation system may only recognize less than 3GB. Hence, a total
installed memory of less than 3GB is recommended.
• This motherboard does not support memory modules made up of 128 Mb
chips.
Notes on memory limitations
• Due to chipset limitation, this motherboard can only support up to
16 GB on the operating systems listed below. You may install a maximum
of 4 GB DIMMs on each slot.
Windows
Windows
• Some old-version DDR2-800 DIMMs may not match Intel
On-Die-Termination (ODT) requirement and will automatically downgrade
to run at DDR2-667. If this happens, contact your memory vendor to check
the ODT value.
• Due to chipset limitation, DDR2-800 with CL=4 will be downgraded to run
at DDR2-667 by default setting. If you want to operate with lower latency,
adjust the memory timing manually.
P5N7A-VM Motherboard Qualified Vendors Lists (QVL)
DDR2-667MHz capability
Size Vendor Part No.
2G Kingston KVR667D2N5/2G
512MB Kingston KVR667D2N5/512
2G Kingston KVR667D2N5/2G
1G Kingston KVR667D2N5/1G
512MB Qimonda HYS64T64000EU-3S-B2
1G Qimonda HYS64T128020EU-3S-B2
1G Corsair XMS2-5400
ASUS P5N7A-VM
64-bit
XP Professional x64 Edition
®
Vista x64 Edition
®
Chip
CL
Brand
N/A Micron
N/A Kingston
N/A Elpida
N/A Kingston
5 Qimonda
5 Qimonda
4 Corsair
(continued on the next page)
SS/
Chip No.
DS
DS 7RE22 D9HNL
SS SO1237650821 SBP D6408TR
4CGL25USL074905PECNB
DS E1108ACBG-8E-E 0813A90CC
DS SO1280420822 SOP D6408TR
4CGL25USL156304PECXA
SS HYB18T512B00B2F3SFS
S28171
DS HYB18T512B00B2F3SFS
S28171
DS Heat-Sink Package
32-bit
®
's
®
DIMM support
A* B* C*
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