Asus M2R-FVM - Manual (Page 27)

ASUS M2R-FVM 1-15
1.7.2 Memory configurations
You may install 256 MB, 512 MB, and 1 GB unbuffered ECC/non-ECC DDR2
DIMMs into the DIMM sockets.
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
• For dual-channel configuration, the total size of memory module(s)
installed per channel must be the same (DIMM_A1 + DIMM_A2 =
DIMM_B1 + DIMM_B2).
• Always install DIMMs with the same CAS latency. 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.
• When using only one DDR DIMM module, install it into slot DIMM_B2
only.
• For single-channel memory configuration, start installing the DDR2
DIMMs from slot DIMM_B1 or DIMM_B2.
• For dual-channel memory configuration, install the DIMMs in slots
DIMM_B2 and DIMM_A2 (black); install another pair of DIMMs in slots
DIMM_B1 and DIMM_A1 (yellow).