Advantech AIMB-766 - Manual (Page 25)

13 AIMB-766 User Manual
Chapter 1
H
ardware
C
onfiguration
1.9 System Memory
The AIMB-766 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, 512 1024 and 2048 MB. The sock-
ets can be filled in any combination with DIMMs of any size, giving a total memory
size between 256 MB and 8 GB.
1.9.1 CPU FSB and memory speed
The AIMB-766 can accept DDR2 SDRAM memory chips without parity. Also note that
the AIMB-766 accepts DDR2 667/800 MHz SDRAM, and DDR2 SDRAM. The AIMB-
766 does not support ECC (error checking and correction).
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, and then press the DIMM module right
down into the socket, until you hear a click. This is when the two handles have auto-
matically locked the memory 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.
1.11 Cache Memory
The AIMB-766 supports a CPU with one of the following built-in full speed L2 caches:
6 MB for Core 2 Quad
4 MB for Core 2 Duo
1 MB for Pentium® Dual Core
512 KB for Celeron® D
The built-in second-level cache in the processor yields much higher performance
than conventional external cache memories.