Asus P5QL Manual page 22

1.7.2 Memory configurations
You may install 512MB, 1GB, 2GB, and 4GB unbuffered non-ECC DDR2 DIMMs into the
DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
• Due to the memory address limitation on 32-bit Windows
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
This motherboard supports up to 16GB on Windows
Vista x64 editions. You may install a maximum of 4GB DIMM on each slot.
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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 the single-channel operation.
recommended that you obtain memory modules from the same vendor.
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 either of the
following:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows
OS.
- Use a 64-bit Windows
the motherboard.
OS if you want to install 4GB or more memory on
®
XP Professional x64 and Windows
®
OS, when you install 4GB or
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Chapter 1: Product introduction
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