Asus P5KPL-AM User Manual - Page 28

Memory configurations - in gb

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1.7.2 Memory configurations You may install 256 MB, 512 MB, 1 GB and 2 GB unbuffered 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, it is recommended that you obtain memory modules from the same vendor. • When installing total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended. • If you install Windows® XP 32-bit operation system, a total 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 4 GB on the operating systems listed below. You may install a maximum of 2 GB DIMMs on each slot, but only DDR2-800 and DDR2-667 2 GB density modules are available for this configuration. 32-bit Windows® XP Windows® Vista 64-bit Windows® XP x 64 Edition Windows® Vista x 64 Edition • Some old-version DDR2-800 DIMMs may not match Intel® On-Die-Termination (ODT) requirement and will automatically downgrade to run at DDR-667. If this heppens, contact your memory vendor to check to ODT value. 1-16 Chapter 1: Product introduction

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1-16
Chapter 1: Product introduction
1.7.2
Memory configurations
You may install 256 MB, 512 MB, 1 GB and 2 GB unbuffered 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,
it is recommended that you obtain memory modules from the same vendor.
•
When installing total memory of 4GB capacity or more, Windows 32-bit
operation system may only recognize less than 3GB. Hence, a total installed
memory of less than 3GB is recommended.
•
If you install Windows
®
XP 32-bit operation system, a total 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
4 GB on the operating systems listed below. You may install a maximum
of 2 GB DIMMs on each slot, but only DDR2-800 and DDR2-667 2 GB
density modules are available for this configuration.
•
Some old-version DDR2-800 DIMMs may not match Intel
®
On-Die-Termination (ODT) requirement and will automatically downgrade
to run at DDR-667. If this heppens, contact your memory vendor to check
to ODT value.
32-bit
64-bit
Windows
®
XP
Windows
®
XP x 64 Edition
Windows
®
Vista
Windows
®
Vista x 64 Edition