Asus V2-P5G33 User Manual - Page 27

ASUS V-Series P5G33

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• 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 highersized 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. • 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® XP/Vista 32-bit operation system which does not support Physical Address Extension (PAE). • If you install Windows® XP/Vista 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 8 GB on the operating systems listed below. You may install a maximum of 2 GB DIMMs on each slot. 64-bit Windows® XP Professional x64 Edition Windows® Vista x64 Edition • Some old-version DDR2-800/667 DIMMs may not match Intel®'s On‑Die‑Termination (ODT) requirement and will automatically downgrade to run at DDR2-533. 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. • Due to chipset limitation, DDR2-667 with CL=3 will be downgraded to run at DDR2-533 by default setting. If you want to operate with lower latency, adjust the memory timing manually. ASUS V-Series P5G33 2-

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2-9
ASUS V-Series P5G33
•
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.
•
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
®
XP/Vista
32-bit operation system which does not support Physical Address
Extension (PAE).
•
If you install Windows
®
XP/Vista 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.
64-bit
Windows
®
XP Professional x64 Edition
Windows
®
Vista x64 Edition
Notes on memory limitations
•
Due to chipset limitation, this motherboard can only support up to
8 GB on the operating systems listed below. You may install a
maximum of 2 GB DIMMs on each slot.
•
Some old-version DDR2-800/667 DIMMs may not match Intel
®
’s
On-Die-Termination (ODT) requirement and will automatically
downgrade to run at DDR2-533. 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.
•
Due to chipset limitation, DDR2-667 with CL=3 will be downgraded
to run at DDR2-533 by default setting. If you want to operate with
lower latency, adjust the memory timing manually.