Asus M3A79-T Deluxe - Manual (Page 37)

ASUS M3A79-T Deluxe 2-11
2.4.2 Memory configurations
You may install 512 MB, 1 GB, 2 GB and 4 GB unbuffered ECC and non-ECC
DDR2 DIMMs into the DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The
system maps the total size of the lower-sized channel for the dual-channel
configuration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Due to CPU limitation, DDR2 1066 MHz is supported by AM2+ CPU for
one DIMM per channel only. For system stability, when four DIMMs are
installed, all DIMMs run at DDR2 800 MHz as the default setting.
• It is recommended to install the memory modules from the yellow slots for
better overclocking capability.
• Always install DIMMs with the same CAS latency. For optimum compatibility,
it is recommended that you obtain memory modules from the same vendor.
• When installing a total memory of 4GB capacity or more, Windows ® 32-bit
operation system may only recognize less than 3GB. Hence, a total installed
memory of less than 3GB is recommended.
• This motherboard does not support memory modules made up of 128 Mb
chips.
• Due to OS limitation, this motherboard can only support up to 16 GB on the
operating systems listed below. You may install a maximum of 4 GB DIMMs
on each slot.
64-bit
Windows ® XP Professional x64 Edition
Windows ® Vista x64 Edition
• The default memory operation frequency is dependent on its SPD. Under
the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value.