2.5System 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 2GB system memory using 184-pin unbuffered non-ECC PC2700/PC2100/ PC1600 DDR DIMMs.

80 Pins

P4GE-V

104 Pins

P4GE-V 184-Pin DDR DIMM Sockets

This motherboard supports different memory frequencies depending on the CPU FSB (Front Side Bus) and the type of DDR DIMM.

CPU FSB

DDR DIMM Type

Memory Frequency

 

 

 

533 MHz

PC2700

333 MHz

 

PC2100

266 MHz

 

 

 

400 MHz

PC2100

266 MHz

 

PC1600

200 MHz

 

 

 

Notes on DDR technology

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.

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.

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Chapter 2: Hardware information