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ASUS P4S533-E motherboard user guide
17
2.5 System memory
2.5.1 Overview
The motherboard comes with three Double Data Rate (DDR) Dual Inline
Memory Module (DIMM) sockets. These sockets support up to 3GB
system memory using 184-pin unbuffered non-ECC PC2700/2100/1600
DIMMs. (Only 4 banks of PC2700 are supported.)
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.
P4S533-E
®
P4S533-E 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
2.7 GB/s 166MHz
2.1 GB/s 133MHz
1.6 GB/s 100MHz