Memory Configurations - Asus P5QL-E - Motherboard - ATX User Manual

2.4.2

Memory configurations

You may install 256 MB, 512 MB, 1 GB, 2 GB, and 4GB unbuffered non-ECC
DDR2 DIMMs into the DIMM sockets.
Recommended Memory Configurations
Mode
Single-Channel
Dual-channel (1)
Dual-channel (2)
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2-12
DIMM_A1
Populated
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Populated
Populated
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 module 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.
If you install four 1 GB memory modules, the system may only recognize less
than 3GB because the address space is reserved for other critical functions.
This limitation appears on Windows
does not support Physical Address Extension (PAE).
If you install Windows
less than 3GB is recommended.
This motherboard does not support memory modules made up of 128 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.
Windows ® XP Professional x64 Edition
Windows
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 4.4 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.
Sockets
DIMM_A2 DIMM_B1
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– Populated
– Populated
Populated Populated
XP/Vista 32-bit operation system which
®
® XP/Vista 32-bit operation system, a total memory of
64-bit
Vista x64 Edition
®
Chapter 2: Hardware information
DIMM_B2
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Populated