Memory Configurations - Asus P5Q-VM - Motherboard - Micro ATX User Manual

1.7.2

Memory configurations

You may install 512 MB, 1 GB, 2 GB, and 4 GB non-ECC, unbuffered, DDR2
DIMMs into the DIMM sockets.
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Due to chipset behavior, to obtain memory frequency higher than DDR2
800, you can manually adjust DRAM Frequency in BIOS settings. Refer to
2.4 Ai Tweaker menu for details.
For DRAM Frequency configuration options in relation to FSB Frequency
settings, see page 2-19 for details.
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.
It is recommended to install the memory modules from the yellow slots for
better overclocking capability.
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 3 GB is recommended.
This motherboard does not support memory modules made up of 256 Mb
chips.
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.
64-bit
Windows ® XP Professional x64 Edition
Vista x64 Edition
Windows
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The default memory operation frequency is dependent on its SPD. Under
the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor-
marked or at a higher frequency, see section 2.4 Ai Tweaker menu for
manual memory frequency adjustment.
The memory modules may require a better cooling system to work stably
under full loading (4 DIMMs) or overclocking setting.
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Chapter 1: Product introduction
32-bit