Asus Motherboard M2S-X - Manual (Page 25)

ASUS M2S-X 1-13
* For dual-channel memory configuration (2), you may:
• install identical DIMMs in all four sockets OR
• install an identical DIMM pair in DIMM_A1 and DIMM_B1 (yellow
sockets) and another identical DIMM pair in DIMM_A2 and
DIMM_B2 (black sockets)
* Always use identical DDR2 DIMM pairs for dual-channel model. For
optimum compatibility, we recommend that you obtain memory
modules from the same vendor. Visit the ASUS website (www.asus.
com) for the latest Qualified Vendors List.
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
Due to chipset limitation, this motherboard can only support up to
3 GB on the 64-bit operating systems.