Intel Socket 478 AIMB-744 - Manual (Page 29)

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The AIMB-744 does not support ECC (error checking and correction).
Memory modules with 9 SDRAM chips/side support ECC; modules with
8 chips/side do not support ECC.
1.9.2 Dual channel configuration
The four DIMM sockets are arranged in two channels: DIMM1 &
DIMM2 in channel A; DIMM3 & DIMM4 in channel B. To enable dual
channel operation, please install a matched pair of DIMMs in DIMM1 &
DIMM3 (green sockets). If additional memory is to be used, another
matched pair of DIMMs have to be installed in DIMM2 & DIMM4 (pur-
ple sockets).
"Matched pair of DIMMs" means: same in speed (DDR266, DDR333,
DDR400), same in size (128MB, 256MB, 512MB or 1GB), same in chip
density (128 Mb, 256Mb or 512Mb and same in CSA latency. Any other
memory configuration will result in single channel memory operation.
1.10 Memory Installation Procedures
To install DIMMs, first make sure the two handles of the DIMM socket
are in the "open" position. i.e. The handles lean outward. Slowly slide the
DIMM module along the plastic guides on both ends of the socket. Then
press the DIMM module right down into the socket, until you hear a
click. This is when the two handles have automatically locked the mem-
ory module into the correct position of the DIMM socket. To remove the
memory module, just push both handles outward, and the memory mod-
ule will be ejected by the mechanism in the socket.
Memory
Speed Processor FSB frequency Memory speed Outcome
DDR400 Pentium 4 800 MHz 400 MHz
DDR333 Pentium 4 800 MHz 320 MHz
Pentium 4 533MHz 333 MHz
Pentium 4
or Celeron 400 MHz 266 MHz
DDR266 Pentium 4 533 or 400 MHz 266 MHz
Celeron 400 MHz 266 MHz