What Is This Tool?
This tool converts data transfer rates between IDE (UDMA mode 0) and IDE (UDMA mode 1), which are Ultra DMA transfer modes used in Parallel ATA (PATA/IDE) devices. It helps users compare and adjust legacy hardware data transfer speeds.
How to Use This Tool?
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Enter the data transfer value in IDE (UDMA mode 0) units
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Select the target unit IDE (UDMA mode 1)
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Click convert to see the equivalent value based on the defined conversion rate
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Use the result to compare or configure legacy PATA/IDE hardware transfer settings
Key Features
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Converts between IDE (UDMA mode 0) and IDE (UDMA mode 1) data transfer rates
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Supports legacy PATA/IDE device measurement and diagnostics
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Browser-based and easy to use without installation
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Includes example conversions for quick reference
Examples
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1 IDE (UDMA mode 0) equals 0.664 IDE (UDMA mode 1)
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5 IDE (UDMA mode 0) equals 3.32 IDE (UDMA mode 1)
Common Use Cases
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Diagnosing or specifying throughput of older PATA/IDE hard drives and optical drives
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Configuring BIOS or device drivers for proper DMA timing on vintage systems
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Comparing legacy interface limits when migrating from PATA to faster standards like SATA or USB
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Troubleshooting compatibility and performance issues related to DMA mode selection
Tips & Best Practices
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Verify compatible cable and controller hardware when using different UDMA modes
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Use the converter to confirm expected theoretical maximum transfer rates
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Apply these conversions primarily in legacy system diagnostics or repairs
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Cross-check actual system performance as it may differ from nominal values
Limitations
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Conversion reflects theoretical maximum transfer rates, not actual performance
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Results do not account for hardware wear, cable quality, or system conditions
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These UDMA modes are largely outdated and relevant mainly for legacy hardware support
Frequently Asked Questions
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What does IDE (UDMA mode 0) represent?
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It is a Parallel ATA transfer mode defining interface timing and a nominal maximum data transfer rate of about 16.7 MB/s used in legacy PATA/IDE devices.
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Why convert between IDE (UDMA mode 0) and IDE (UDMA mode 1)?
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To compare or adjust transfer speeds when diagnosing PATA hardware or configuring BIOS and drivers for better compatibility and throughput.
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Can this tool predict actual data transfer performance?
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No, it only converts nominal theoretical maximum transfer rates; actual performance depends on hardware and system conditions.
Key Terminology
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IDE (UDMA mode 0)
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An Ultra DMA transfer mode for PATA devices with a nominal maximum raw data rate of approximately 16.7 MB/s.
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IDE (UDMA mode 1)
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A faster Ultra DMA mode for PATA devices with a theoretical maximum raw data transfer rate near 25 MB/s.
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PATA (Parallel ATA)
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An interface standard for connecting storage devices in older computer systems, also known as IDE.