Advantech PCE-5124, User Manual

Page: 32 / 138

PCE-5124 User Manual 18
1.9 System Memory
The PCE-5124 has four sockets for 240-pin dual inline memory modules
(DIMMs) in two memory channels.
All these sockets use 1.8 V unbuffered double data rate synchronous
DRAMs (DDR SDRAM). They are available in capacities of 256 MB,
512 MB, 1024 MB and 2 GB. The sockets can be filled in any combina-
tion with DIMMs of any size, giving a total memory size between 256
MB and 8 GB.
The PCE-5124 can accept DDR2 SDRAM memory chips without parity.
Also note that the PCE-5124 accepts DDR2 667/800 MHz SDRAM, and
DDR2 SDRAM. The PCE-5124 does NOT support ECC (error checking
and correction).
Note:
Because PCE-5124 supports Intel® Active
Management Technology 3.0 (iAMT 3.0) func-
tion, some capacity of system memory will be
taken for iAMT 3.0 usage. Please see detailed
description below.
• If both channels are occupied in the sys-
tem are of the same size
(DIMMB1 =
DIMMB2) then Intel AMT takes 32MB.
• If ch0 not equal ch1 (DIMMB1
≠
DIMMB2) then memory is
configured in intestacked mode
and Intel AMT takes only 16MB from
CH0.
• If no ch0 memory is used, then Intel AMT
would not function, then it does not
occupy any memory size.
Beside iAMT 3.0, due to PC architecture limita-
tion, the memory capacity recognized by the
BIOS may be different from that is physically
installed in the DIMM slots.