Asus RAMPAGE III EXTREME Specifications download pdf (Page 44)

2-14 Chapter 2: Hardware information

• 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

conguration. Any excess memory from the higher-sized channel is then

mapped for single-channel operation.

• Always install DIMMs with the same CAS latency. For optimum

compatibility, it is recommended that you obtain memory modules from the

same vendor.

• If you install four 1 GB memory modules, the system may only recognize

less than 3GB because the address space is reserved for other critical

functions. This limitation appears on Windows

XP/Vista 32-bit operation

system which does not support Physical Address Extension (PAE).

• If you install Windows

XP/Vista 32-bit operation system, a total memory of

less than 3GB is recommended.

• Due to chipset limitation, this motherboard can only support up to 8 GB on

the operating systems listed below. You may install a maximum of 2 GB

DIMMs on each slot.

• 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. To operate at the vendor-

marked or at a higher frequency, see section

3.3 Extreme Tweaker menu

for manual memory frequency adjustment.

• The memory modules may require a better cooling system to work stably

under full loading (4 DIMMs) or overclocking setting.

64-bit

Windows

XP Professional x64 Edition

Windows

Vista x64 Edition

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Asus RAMPAGE III EXTREME Specifications Page 44