2.4.2 Memory congurations
You may install 1GB and 2GB non-ECC, unbuffered DDR3 DIMMs into the DIMM
sockets.
• You may install varying memory sizes in Channel A, Channel B and
Channel C. The system maps the total size of the lower-sized channel for
the dual-channel or triple-channel conguration. Any excess memory from
the higher-sized channel is then mapped for single-channel operation.
• Due to Intel spec denition, X.M.P. DIMMs and DDR3-1600 are supported
for one DIMM per channel only.
• According to Intel CPU spec, DIMMs with voltage requirement over 1.65V
may damage the CPU permanently. We recommend you install the DIMMs
with the voltage requirement below 1.65V.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from the
same vendor.
• Due to the memory address limitation on 32-bit Windows OS, when you
install 4GB or more memory on the motherboard, the actual usable memory
for the OS can be about 3GB or less. For effective use of memory, we
recommend that you install a 64-bit Windows OS when having 4GB or
more memory installed on the motherboard.
• This motherboard does not support memory modules made up of 128 Mb
chips.
• 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.
• For system stability, use a more efcient memory cooling system to support
a full memory load (6 DIMMs) or overclocking condition.
2-12 Chapter 2: Hardware information
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