What does IDE (UDMA mode 2) represent?

IDE (UDMA mode 2) is an Ultra DMA transfer mode for Parallel ATA interfaces offering about 33.3 MB/s maximum transfer rate, commonly known as ATA/33.

How does IDE (PIO mode 4) differ from UDMA modes?

IDE (PIO mode 4) is a CPU-driven transfer mode characterized by different timing and handshaking, with a lower maximum throughput of roughly 16.7 MB/s.

Why convert between these two modes?

Converting helps compare transfer rates, troubleshoot legacy hardware issues, and configure system BIOS or drivers using older ATA timing standards.

How to Convert from IDE (UDMA mode 2) to IDE (PIO mode 4)?

Convert data transfer rates from IDE (UDMA mode 2) to IDE (PIO mode 4) using a reliable unit converter designed for legacy ATA/IDE timing modes and transfer speeds.

IDE (UDMA mode 2)

IDE (PIO mode 4)

Please check your input. It must be a valid numeric value.

IDE (UDMA mode 2) to IDE (PIO mode 4) Conversion Table

IDE (UDMA mode 2)	IDE (PIO mode 4)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

IDE (UDMA mode 2) to IDE (PIO mode 4) Conversion Table
IDE (UDMA mode 2)	IDE (PIO mode 4)

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What Is This Tool?

This tool converts data transfer rates between two legacy IDE timing modes: IDE (UDMA mode 2) and IDE (PIO mode 4). It helps users compare and understand the differences in transfer speeds for ATA/IDE interfaces commonly used in older hardware systems.

How to Use This Tool?

Enter the value in IDE (UDMA mode 2) you wish to convert.
Select IDE (PIO mode 4) as the target unit for conversion.
Run the calculation to see the equivalent transfer rate in IDE (PIO mode 4).
Interpret results to compare legacy ATA timing modes effectively.

Key Features

Convert between IDE (UDMA mode 2) and IDE (PIO mode 4) transfer rates accurately.
Useful for legacy PC hardware configurations and troubleshooting.
Provides conversion based on theoretical maximum throughput values.
Supports benchmarking and performance comparisons of older storage devices.
Browser-based and easy to use without any installations.

Examples

1 IDE (UDMA mode 2) equals approximately 1.9879518072 IDE (PIO mode 4).
5 IDE (UDMA mode 2) converts to about 9.939759036 IDE (PIO mode 4).

Common Use Cases

Configuring older PC BIOS or drive-controller settings for legacy ATA devices.
Benchmarking and comparing legacy storage device performances.
Troubleshooting compatibility issues on systems using ATA timing modes.
Supporting embedded systems or industrial applications relying on PATA interfaces.
Analyzing retro-computing hardware based on historical transfer modes.

Tips & Best Practices

Verify device mode compatibility before applying conversion results.
Use the tool for theoretical comparisons rather than actual throughput guarantees.
Consider context such as firmware and hardware conditions when interpreting results.
Apply conversions carefully in legacy system maintenance and diagnostics.

Limitations

Conversion is based on theoretical maximum transfer speeds, not real-world sustained rates.
Results apply only to legacy PATA/IDE technologies, not modern SATA or NVMe devices.
Accuracy assumes devices strictly use the specified timing modes without additional modifications.

Frequently Asked Questions

What does IDE (UDMA mode 2) represent?: IDE (UDMA mode 2) is an Ultra DMA transfer mode for Parallel ATA interfaces offering about 33.3 MB/s maximum transfer rate, commonly known as ATA/33.
How does IDE (PIO mode 4) differ from UDMA modes?: IDE (PIO mode 4) is a CPU-driven transfer mode characterized by different timing and handshaking, with a lower maximum throughput of roughly 16.7 MB/s.
Why convert between these two modes?: Converting helps compare transfer rates, troubleshoot legacy hardware issues, and configure system BIOS or drivers using older ATA timing standards.

Key Terminology

IDE (UDMA mode 2): An Ultra DMA transfer mode for legacy Parallel ATA interfaces providing a theoretical maximum of about 33.3 MB/s data transfer.
IDE (PIO mode 4): A CPU-controlled Programmed Input/Output mode for IDE storage devices with a theoretical throughput near 16.7 MB/s.
ATA/IDE: An older interface standard for connecting storage devices, including Parallel ATA and IDE drives in legacy computing systems.

Quick Knowledge Check

What is the approximate maximum transfer rate of IDE (UDMA mode 2)?

16.7 MB/s

33.3 MB/s

50 MB/s

Which mode is CPU-driven in data transfer?

IDE (PIO mode 4)

IDE (UDMA mode 2)

SATA mode

What does this conversion tool mainly assist with?

Modern NVMe device benchmarking

Comparing legacy ATA transfer rates

Calculating SATA throughput

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