Memory Configurations - Intel AX965Q User Manual

1.5.2

Memory Configurations

You may install 256 MB, 512 MB, 1 GB and 2GB unbuffered non‑ECC DDR2 DIMMs into
the DIMM sockets using the memory configurations in this section.
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.
Due to chipset resource allocation, the system may detect less
than 4 GB system memory when you installed four 1 GB DDR2
memory modules. This limitation appears on Windows® XP
32-bit operation system which does not support Physical Address
Extension (PAE).
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 or double-sided x16 memory modules.
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, but only DDR2-533 and
DDR2-667 2 GB density modules are available for this
configuration.
32-bit
Windows 2000 Advanced Server
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.
The total memory may has 8MB reduction under Single Channel
mode, and 16MB reduction under Dual Channel mode because
the address space is reserved for the Intel® vPro™ Technology
and the Intel® Quiet System Technology.
64-bit
Windows XP Professional x64 Ed.
ATX Main board
User's Manual
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