What does IDE (UDMA mode 4) mean?

IDE (UDMA mode 4), also known as Ultra DMA/66, is a Parallel ATA transfer mode that allows data transfer at a theoretical maximum of about 66.7 megabytes per second using an 80-conductor cable.

What is Fast Ethernet?

Fast Ethernet refers to IEEE 802.3 standards providing network data rates of 100 megabits per second, commonly implemented as 100BASE-TX or 100BASE-FX for local-area networking.

Why convert IDE (UDMA mode 4) speeds to Ethernet (fast)?

Converting these speeds helps users compare or integrate legacy IDE data rates with modern network transfer speeds, useful in benchmarking older storage devices alongside networked systems.

How to Convert from IDE (UDMA mode 4) to Ethernet (fast)?

Convert data transfer rates from IDE (UDMA mode 4) to Fast Ethernet easily using this online tool. Ideal for comparing legacy storage speeds with network performance.

IDE (UDMA mode 4)

Ethernet (fast)

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

IDE (UDMA mode 4) to Ethernet (fast) Conversion Table

IDE (UDMA mode 4)	Ethernet (fast)

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 4) to Ethernet (fast) Conversion Table
IDE (UDMA mode 4)	Ethernet (fast)

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What Is This Tool?

This unit converter helps translate data transfer speeds from IDE (UDMA mode 4) devices to Fast Ethernet rates. It is designed for users needing to compare or understand transfer capabilities between older storage hardware and modern network equipment.

How to Use This Tool?

Enter the value in IDE (UDMA mode 4) units you want to convert.
Select IDE (UDMA mode 4) as the input and Fast Ethernet (100 Mbps) as the output units.
Click the convert button to view the equivalent Ethernet (fast) value.
Use the result to compare or integrate legacy IDE device speeds with networking standards.

Key Features

Converts transfer speeds from IDE (UDMA mode 4) to Fast Ethernet values.
Based on theoretical maximum throughput rates for accurate comparisons.
Browser-based and easy to use with instant conversion results.
Supports benchmarking and legacy hardware maintenance tasks.
Provides clear, practical examples of conversions.

Examples

1 IDE (UDMA mode 4) = 5.28 Ethernet (fast)
2 IDE (UDMA mode 4) = 10.56 Ethernet (fast)

Common Use Cases

Connecting older PATA/IDE drives in legacy computer systems supporting ATA-66.
Benchmarking or troubleshooting storage devices in embedded or desktop BIOS/firmware.
Converting legacy IDE data rates to network equivalents during hardware integration.
Setting up or maintaining small office/home LANs with 100 Mbps Ethernet.
Comparing legacy storage throughput with modern networking equipment performance.

Tips & Best Practices

Verify device specifications to ensure compatibility with ATA-66 or Fast Ethernet standards.
Account for real-world factors like protocol overhead and hardware limitations.
Use conversions as a guideline rather than exact performance measurement.
Keep your system firmware or BIOS up to date when configuring legacy modes.
Utilize this tool to assist in data recovery or storage system benchmarking.

Limitations

Conversion is theoretical and based on maximum throughput and ideal conditions.
Actual transfer speeds may differ due to hardware, encoding, and network overhead.
IDE (UDMA mode 4) rates are measured in megabytes per second, while Fast Ethernet uses megabits per second.
Assumes no protocol or physical layer overhead affecting effective speed.
Not intended for precise or real-time speed measurement in production environments.

Frequently Asked Questions

What does IDE (UDMA mode 4) mean?: IDE (UDMA mode 4), also known as Ultra DMA/66, is a Parallel ATA transfer mode that allows data transfer at a theoretical maximum of about 66.7 megabytes per second using an 80-conductor cable.
What is Fast Ethernet?: Fast Ethernet refers to IEEE 802.3 standards providing network data rates of 100 megabits per second, commonly implemented as 100BASE-TX or 100BASE-FX for local-area networking.
Why convert IDE (UDMA mode 4) speeds to Ethernet (fast)?: Converting these speeds helps users compare or integrate legacy IDE data rates with modern network transfer speeds, useful in benchmarking older storage devices alongside networked systems.

Key Terminology

IDE (UDMA mode 4): A Parallel ATA transfer mode also known as Ultra DMA/66, providing up to about 66.7 megabytes per second data transfer with an 80-conductor cable.
Fast Ethernet: IEEE 802.3 Ethernet standards with a nominal rate of 100 megabits per second, commonly used for local-area networking.
Throughput: The rate at which data is successfully transferred from one place to another, often measured in megabytes or megabits per second.

Quick Knowledge Check

What is the maximum theoretical throughput of IDE (UDMA mode 4)?

About 100 megabytes per second

About 66.7 megabytes per second

About 50 megabytes per second

Fast Ethernet has a nominal data rate of:

1000 megabits per second

100 megabits per second

66.7 megabits per second

The conversion from IDE (UDMA mode 4) to Ethernet (fast) is based on:

Measured real-world speeds with protocol overhead included

Theoretical maximum throughput without encoding overhead

Average network traffic conditions

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