What Is This Tool?
This converter facilitates transforming data transfer rate values measured in megabyte per second based on the SI definition into the IDE (UDMA mode 4) transfer units. It helps users understand and compare the throughput of modern digital systems with legacy IDE/ATA hardware speeds.
How to Use This Tool?
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Enter the value in megabyte per second (SI def.) you want to convert.
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Select the source unit as megabyte/second (SI def.) and the target unit as IDE (UDMA mode 4).
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Click the convert button to instantly see the equivalent transfer rate in IDE (UDMA mode 4).
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Use the results to compare or analyze data rates across different transfer standards.
Key Features
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Convert data rates from megabyte/second (SI def.) to IDE (UDMA mode 4) units.
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Supports comparisons between current digital transfer speeds and older IDE interface throughput.
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Clear input and output handling for user-friendly experience.
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Browser-based with no installation needed.
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Displays examples for easy reference of conversion outcomes.
Examples
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10 megabyte/second (SI def.) converts to approximately 0.151515152 IDE (UDMA mode 4).
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50 megabyte/second (SI def.) converts to approximately 0.75757576 IDE (UDMA mode 4).
Common Use Cases
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Comparing current data transfer speeds with legacy IDE hard drive interface rates.
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Understanding limits of older storage technology versus modern throughput measures.
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Maintaining and benchmarking vintage PC hardware and PATA/IDE drives.
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Supporting data recovery and troubleshooting on legacy systems using BIOS or firmware DMA modes.
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Researching computing history and analyzing legacy storage device performance.
Tips & Best Practices
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Always verify which transfer mode and cable type (80-conductor IDE cable) applies when interpreting IDE (UDMA mode 4) rates.
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Use this tool to complement benchmarking results rather than replace direct hardware measurements.
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Consider device-specific factors like hardware overhead when comparing converted rates.
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Take note that IDE (UDMA mode 4) has a fixed maximum transfer capacity that limits comparison.
Limitations
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IDE (UDMA mode 4) throughput is capped at about 66.7 MB/s, restricting the range of realistic conversion outcomes.
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The required 80-conductor IDE cable is necessary for reliable signal transfer, making this mode obsolete in modern contexts.
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Conversion results should be treated as theoretical for comparison since actual performance varies due to hardware and overhead factors.
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Not suitable for representing transfer rates of current, faster data interfaces.
Frequently Asked Questions
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What does megabyte per second (SI definition) mean?
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It is a data transfer rate representing 1,000,000 bytes transferred each second, using decimal SI units.
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What is IDE (UDMA mode 4)?
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It is a Parallel ATA transfer mode in IDE/ATA standard providing data transfer speed up to about 66.7 MB/s, requiring an 80-conductor IDE cable.
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Why convert between megabyte/second (SI def.) and IDE (UDMA mode 4)?
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To compare modern digital transfer rates with the performance limits of older IDE storage interfaces and assist in legacy system analysis.
Key Terminology
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Megabyte/second (SI def.)
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A unit of data transfer rate equal to one million bytes transferred each second, based on decimal units.
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IDE (UDMA mode 4)
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An Ultra DMA/66 transfer mode in the IDE/ATA standard with a maximum theoretical throughput near 66.7 MB/s requiring an 80-conductor IDE cable.