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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 0011:  System Memory
      9  VI  Other Types of Memory

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Fast Page Memory
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Burst Extended Data Out DRAM
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Extended Data Out DRAM

Extended Data Out, or EDO DRAM, is the most common type of asynchronous DRAM used in PCs. A simple way to think of how EDO DRAM is faster than conventional DRAM is that it allows a memory access to begin before the last one has completed. EDO memory has about a 3-5% performance increase over FPM DRAM memory and about 10% increase over standard asynchronous DRAM.

EDO RAM

EDO
DRAM is about 10% faster than asynchronous DRAM.


EDO memory was quickly replaced because EDO memory is really not suitable for system buses above 75MHz. Be mindful when buying EDO RAM for an older PC. Many motherboards, old and new, will not support EDO RAM. Some motherboards are "EDO tolerant" in that they will treat EDO as FPM memory and you will lose any performance gains from the EDO memory module.


Previous Topic/Section
Fast Page Memory
Previous Page
Pages in Current Topic/Section
1
Next Page
Burst Extended Data Out DRAM
Next Topic/Section

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