Asus P4S533 User's Guide download pdf (Page 29)

ASUS P4S533-E motherboard user guide

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

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Asus P4S533 User's Guide Page 29