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Crucial PC1600 / PC2100 DDR Memory Review

Crucial PC1600 / PC2100 DDR Memory Review - PCSTATS
Abstract: In layman terms, DDR is basically the result of designing the data to be processed on both the upward and downward signal slopes, whereas SDR is just a single process per signal slope.
 87% Rating:   
Filed under: Memory Published:  Author: 
External Mfg. Website: Crucial.com Jun 21 2001   Ivan Woo  
Home > Reviews > Memory > Crucial.com PC2100 DDR

DDR Enters the Spotlight:

DDR SDRAM (Double Data Ram) evolved from SDRAM when an alternative was sought.

DDR SDRAM is the internal pipelined Double Data Rate (DDR) which occurs when there are two data accesses per clock cycle, as opposed to the Single Data access per clock cycle (SD) during the process of information in system memory.

In layman terms, DDR is basically the result of designing the data to be processed on both the upward and downward signal slopes, whereas SDR is just a single process per signal slope. Imagine an oscilloscope which displays a series of curves which goes up and down. So DDR is sort of a 2-for 1 deal, (faster) if you will.

Currently, the JDEC standards available for DDR-SDRAM are PC1600, PC2100, and PC2700. This new labeling refers to the total bandwidth of the memory, as opposed to the old standard which listed the speed rating (in MHz) of the SDRAM memory, in this case, the PC66, PC100, and the PC133.

Another telltale difference between SDRAM and DDRAM is the amount of pins used. SDRAM consists of only 168 pins, whereas DDRAM has 184 pins. The two types of memory are not interchangeable, and the change in pin numbers ensures memory is not inserted in boards which do not support it.

One of the largest major memory manufacturers in the world is Micron. They were one of the first to announce the availability and prices for DDRAM (through their online store Crucial.com ) when little else was known about this newly adopted type of memory platform.

Initially the first crop of chipsets which support DDR memory would outperform the venerable SDRAM PC100/ PC133 in most applications and benchmarks by up about 10+ percent. Now a days, with the release of DDR333 supporting chipsets everywhere, the performance gap is substantially higher.  

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Contents of Article: Crucial.com PC2100 DDR
 Pg 1.  Crucial PC1600 / PC2100 DDR Memory Review
 Pg 2.  Behind DDR
 Pg 3.  — DDR Enters the Spotlight:
 Pg 4.  Testing Crucial DDR Memory
 Pg 5.  SiSoft Sandra 2001 Professional: CPU Benchmark
 Pg 6.  SiSoft Sandra 2001 Professional: Multimedia
 Pg 7.  SiSoft Sandra 2001 Professional: Memory
 Pg 8.  Quake 3 Arena Benchmarks

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