ASUS PR-DLS533 motherboard user guide
2-9
2.5.2 Memory Configurations
The motherboard supports system memory of up to 12GB in a two-way
interleaved configuration. As a rule, this configuration requires that you
install identical DDR DIMMs (exactly the same type and size) in pairs. For
example, if you installed a 512MB module into DDRA1, you must install
the same type of 512MB module into DDRA2. The same rule applies to
pairs DDRB1/DDRB2 and DDRC1/DDRC2.
The only exception to the above rule allows you to install one DIMM into
DDRA1 socket (the socket closest to the ATX power connector). Installing
a single DIMM into any other socket would not work.
The following table lists the DIMM socket pairs and the memory modules
that you can install.
Memory configuration table
DIMM Socket
184-pin ECC DDR DIMM
Total Memory
DDRA1
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
DDRA2
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
DDRB1
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
DDRB2
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
DDRC1
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
DDRC2
SDRAM 128MB, 256MB, 512MB, 1GB, 2GB
x1
Total System Memory (Max. 12GB)
=
The system chipset only supports PC2100/1600 registered ECC
DIMMs. Make sure to use only the specified DIMM types for stable
system operation.
Memory frequency/CPU FSB synchronization
CPU FSB
DDR DIMM Type
Memory Frequency
533 MHz
PC2100
266 MHz
400 MHz
PC1600
200 MHz
Make sure that the memory frequency matches the CPU FSB (Front
Side Bus).
