Asus P5B Computer Hardware User Manual


 
2-14 Chapter 2: Hardware information
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 conguration.
32-bit 64-bit
Windows
®
2000 Advanced Windows
®
XP Professional x64
Server 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.