Asus P5KC User Manual
Page 40
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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
configuration. 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.
• This motherboard does not support memory modules made up of 128 Mb
chips or double sided x16 memory modules.
Recommended Memory Configurations (DDR3)
Mode
Sockets
DDR3_DIMM_A1
DDR3_DIMM_B1
Single-Channel
Populated
-
-
Populated
Dual-channel
Populated
Populated
64-bit
Windows XP Professional x64 Edition
Windows Vista x64 Edition
For DDR2 DIMMs:
• For DDR2 DIMMs, due to chipset resource allocation, the system may
detect less than 8 GB system memory when you installed four 2 GB DDR2
memory modules.
• If you install four 1 GB memory modules, the system may detect less than
3 GB of total memory because of address space allocation for other critical
functions. This limitation applies to Windows Vista 32-bit/Windows XP 32-bit
version operating system since it does not support PAE (Physical Address
Extention) mode.
• If you install Windows Vista 32-bit/Windows XP 32-bit version operating
system, we recommend that you install less than 3GB of total memory.
Notes on memory limitations
• 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.