Asus Rampage II Extreme - Republic of Gamers Motherboard Specifications download pdf (Page 43)

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You may install 512MB, 1GB, 2GB and 4GB unbuffered and non-ECC DDR3

DIMMs into the DIMM sockets.

• The default memory operation frequency is dependent on its Serial

Presence Detect (SPD), which is the standard way of accessing information

from a memory module. Under the default state, some memory modules

for overclocking may operate at a lower frequency than the vendor-marked

value. To operate at the vendor-marked or at a higher frequency, refer

to section 3.3 Extreme Tweaker menu for manual memory frequency

adjustment.

• For system stability, use a more efficient memory cooling system to support

a full memory load (6 DIMMs) or overclocking condition.

• 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 configuration. Any excess memory from

the higher-sized channel is then mapped for single-channel operation.

• Due to Intel spec definition, 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 do any of the following:

- Use a maximum of 3GB system memory if you are using a 32-bit

Windows OS.

- Install a 64-bit Windows OS when you want to install 4GB or more on the

motherboard.

For more details, refer to the Microsoft

support site at

http://support.microsoft.com/kb/929605/en-us.

• This motherboard does not support DIMMs made up of 512 Mb (64MB)

chips or less (Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1

Megabyte/MB).

ROG Rampage III Formula 2-15

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Asus Rampage II Extreme - Republic of Gamers Motherboard Specifications Page 43