Asus P4SGL-VM P4SGL-VM User Manual - Page 32

System memory

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2.5 System memory 2.5.1 Overview The motherboard comes with two Double Data Rate (DDR) Dual Inline Memory Module (DIMM) sockets. These sockets support up to 2GB system memory using 184-pin unbuffered non-ECC PC2100/1600 DIMMs. P4SGL-VM ® P4SGL-VM 184-Pin DDR DIMM Sockets 104 Pins 80 Pins A DDR DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into a socket to avoid damaging the DIMM. The DDR SDRAM technology evolved from the mainstream PC66, PC100, PC133 memory known as Single Data Rate (SDR) SDRAM. DDR memory however, has the ability to perform two data operations in one clock cycle, thus providing twice the throughput of SDR memory. DDR Data Transfer Rate 266MHz 200MHz DDR Base Frequency 133MHz 100MHz A DDR DIMM has the same physical dimensions as an SDR DIMM, but it has a 184-pin footprint compared to the 168-pin of the SDR DIMM. Also, a DDR DIMM is single notched while an SDR DIMM is double notched. Therefore, a DDR DIMM is not backward compatible with SDR, and should be installed only in a socket specially designed for DDR DIMMs. 2-10 Chapter 2: Hardware information

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2-10
Chapter 2: Hardware information
2.5
System memory
2.5.1
Overview
The motherboard comes with two Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets. These sockets support up to 2GB
system memory using 184-pin unbuffered non-ECC PC2100/1600 DIMMs.
A DDR DIMM is
keyed with a notch so that it fits in only one direction.
DO NOT force a DIMM into a socket to avoid damaging the DIMM.
The DDR SDRAM technology evolved from the mainstream PC66, PC100,
PC133 memory known as Single Data Rate (SDR) SDRAM. DDR memory
however, has the ability to perform two data operations in one clock cycle,
thus providing twice the throughput of SDR memory.
P4SGL-VM
P4SGL-VM 184-Pin DDR DIMM Sockets
80 Pins
104 Pins
A DDR DIMM has the same physical dimensions as an SDR DIMM, but it
has a 184-pin footprint compared to the 168-pin of the SDR DIMM. Also, a
DDR DIMM is single notched while an SDR DIMM is double notched.
Therefore, a DDR DIMM is not backward compatible with SDR, and should
be installed only in a socket specially designed for DDR DIMMs.
DDR Data Transfer Rate
DDR Base Frequency
266MHz
133MHz
200MHz
100MHz