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2.4.2
Memory configurations
You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered non-ECC DDR2
DIMMs into the DIMM sockets.
Recommended Memory Configurations
Mode
Single-Channel
Dual-channel (1)
Dual-channel (2)
•
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
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.
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.
Windows
Windows
•
Some old-version DDR2-800 DIMMs may not match Intel
On-Die-Termination (ODT) requirement and will automatically downgrade
to run at DDR2-667. 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.
ASUS Blitz Formula
DIMM_A1
DIMM_A2
–
–
Populated
–
Populated
–
Populated
Populated
XP/Vista 32-bit operation system, a total memory of
®
64-bit
XP Professional x64 Edition
®
Vista x64 Edition
®
Sockets
DIMM_B1
Populated
–
Populated
Populated
XP/Vista 32-bit operation system which
®
DIMM_B2
–
–
–
Populated
's
®
2-19
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