Asus PR-DLS533/Rack Manual PDF file for PR-DLS533 - Page 35
Memory Configurations
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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 533 MHz 400 MHz DDR DIMM Type PC2100 PC1600 Memory Frequency 266 MHz 200 MHz Make sure that the memory frequency matches the CPU FSB (Front Side Bus). ASUS PR-DLS533 motherboard user guide 2-9