Asus P5W User Manual - Page 41

Important notice on installing Windows® XP 32-bit version If you install Windows® XP 32-bit version Operating System (OS), the limitation of this OS version is that it may reserve a certain amount of memory space for system devices. We recommend that you install less than 3 GB system memory if you would like to work under Windows® XP 32-bit version OS. The excess memory installation will not cause any usage problem, but it will not give users the benefit of manipulating this excess memory space. Visit the ASUS FAQ site for further explanation: http://support.asus.com/faq/faq. aspx?SLanguage=en-us Under General Search, make the selections as shown, then click Search. Click the article titled "4GB memory installed but less memory size detected." You also may check the URLs below for third party comments on this issue: http://dlsvr01.asus.com/pub/ASUS/mb/4GB_Rev1.pdf http://www.intel.com/support/motherboards/server/sb/cs-016594.htm 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. 32-bit Windows® 2000 Advanced Server Windows® Server 2003 Enterprise Edition 64-bit Windows® Server 2003 Standard x64 Edition Windows® XP Professional x64 Enterprise Edition Windows® Server 2003 Enterprise x64 Edition • Some old-version DDR2-667 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, DDR2-667 with CL=4 will be downgraded to run at DDR2-533 by default setting. If you want to operate with lower latency, adjust the memory timing manually. • Due to chipset limitation, DDR2-533 with CL=3 will be downgraded to run at DDR2-400 by default setting. If you want to operate with lower latency, adjust the memory timing manually. ASUS P5W 2-15