- 42 -
3.3 System Memory Configuration
The AN51R mainboard has three 184-pin DIMM slots that allow you to
install from 64MB up to 3GB of system memory. Each 184-pin DIMM (Dual
In-line Memory Module) slot can accommdate 64MB, 128MB, 256MB,
512MB, and 1GB compliant 2.5V/2.6V single or double side 64-bit wide
data path with or without ECC DDR-SDRAM modules. You do not need to
set any jumper to configure memory since the BIOS utility can detect the
system memory automatically. You can check the total system memory value
in the BIOS Standard CMOS Setup menu. As started previously, all DIMMs
must operate at the same frequency. The default frequency is the lowest of all
the DIMMs populated.
Note: The total installed memory does not exceed 3GB.
1. Memory Configurations:
Install memory in any or all of the banks. The combination shown as follows.
No.of dimms
DIMM1
1,3
DIMM2
2,3
DIMM3
2
MAX
SPEED
1
x8 single rank or x16
empty
empty
DDR 400
1
empty
x8 single rank or x16
empty
DDR 400
1
empty
empty
x8 single rank or x16
DDR 400
1
x8 duoble rank
empty
empty
DDR 400
1
empty
x8 duoble rank
empty
DDR 400
1
empty
empty
x8 duoble rank
DDR 400
2
x8 single rank or x16
x8 single rank or x16
empty
DDR 400
2
x8 single rank or x16
x8 duoble rank
empty
DDR 400
2
x8 single rank or x16
empty
x8 single rank or x16
DDR 400
2
x8 single rank or x16
empty
x8 duoble rank
DDR 400
2
x8 duoble rank
x8 single rank or x16
empty
DDR 400
2
x8 duoble rank
x8 duoble rank
empty
DDR 400
2
x8 duoble rank
empty
x8 single rank or x16
DDR 400
2
empty
x8 single rank or x16
x8 single rank or x16
DDR 333
2
empty
x8 single rank or x16
x8 duoble rank
DDR 200
2
empty
x8 duoble rank
x8 single rank or x16
DDR 200
2
empty
x8 duoble rank
x8 duoble rank
DDR 200
2
x8 duoble rank
empty
x8 duoble rank
DDR 400
