What Is This Tool?
This converter translates data transfer rates between IDE (UDMA mode 2) and IDE (UDMA mode 1), two Ultra DMA transfer modes for Parallel ATA interfaces. It is useful for interpreting legacy data transfer rates and configuring older hardware settings.
How to Use This Tool?
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Enter the value in IDE (UDMA mode 2) units that you want to convert
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Select IDE (UDMA mode 2) as the source unit and IDE (UDMA mode 1) as the target unit
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Click convert to see the equivalent value in IDE (UDMA mode 1)
Key Features
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Converts rates between IDE (UDMA mode 2) and IDE (UDMA mode 1)
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Supports legacy Parallel ATA (PATA) data transfer units
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Provides quick reference for vintage computer diagnostics and configurations
Examples
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1 IDE (UDMA mode 2) equals 1.32 IDE (UDMA mode 1)
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5 IDE (UDMA mode 2) equals 6.6 IDE (UDMA mode 1)
Common Use Cases
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Comparing legacy data transfer rates between different Ultra DMA modes
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Configuring BIOS or drive-controller settings for older PATA devices
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Troubleshooting compatibility and performance issues on vintage systems
Tips & Best Practices
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Always verify transfer mode settings in system BIOS for accurate performance
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Use this converter to translate benchmark results for legacy storage devices
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Consider cable and hardware condition when interpreting calculated values
Limitations
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Transfer rates are theoretical maximums and may vary with hardware and system conditions
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Applicable only to legacy PATA/IDE devices and not modern SATA or NVMe interfaces
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Does not take into account overhead or error correction delays in real-world usage
Frequently Asked Questions
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What does IDE (UDMA mode 2) represent?
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IDE (UDMA mode 2) is an Ultra DMA mode for Parallel ATA interfaces offering a theoretical maximum transfer rate of about 33.3 megabytes per second, also known as ATA/33.
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Why convert from IDE (UDMA mode 2) to IDE (UDMA mode 1)?
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This conversion helps compare or translate data transfer rates between different Ultra DMA modes on PATA systems for diagnostics, performance evaluation, or legacy hardware configuration.
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Are these conversions applicable to modern storage devices?
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No, these modes and conversions only relate to legacy PATA/IDE devices and are not relevant for modern SATA or NVMe technologies.
Key Terminology
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IDE (UDMA mode 2)
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An Ultra DMA transfer mode for Parallel ATA interfaces with a theoretical maximum transfer rate of about 33.3 MB/s, known as ATA/33.
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IDE (UDMA mode 1)
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An Ultra DMA mode for PATA devices providing a theoretical maximum raw transfer rate around 25 MB/s, used for timing and error-checking.
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PATA
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Parallel ATA, a legacy interface standard for connecting storage devices like hard drives and optical drives.