Asus P5N72-T Computer Hardware User Manual


 
ASUS P5N72-T Premium 2-15
2.4.2 Memory congurations
You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered non-ECC DDR2
DIMMs into the DIMM sockets.
Recommended Memory Congurations
 


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.
 
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.
Mode
Sockets
DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
Single-Channel
Populated
Populated
Dual-channel (1)
Populated Populated
Dual-channel (2)
Populated Populated Populated Populated
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 DIMMs may not match Intel
®
’s
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.