What does IDE (UDMA-66) mean?

IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA transfer mode with a maximum theoretical raw data rate of 66.7 megabytes per second for legacy PATA storage devices.

What is Fast Ethernet?

Fast Ethernet refers to IEEE 802.3 standards providing a nominal data rate of 100 megabits per second, typically using 100BASE-TX or 100BASE-FX for local-area network connections.

Why is the conversion ratio 1 IDE (UDMA-66) to 5.28 Ethernet (fast)?

This ratio reflects the comparison of IDE (UDMA-66) data rates in megabytes per second to Fast Ethernet speeds in megabits per second, converting storage burst throughput to networking data rates.

How to Convert from IDE (UDMA-66) to Ethernet (fast)?

Learn how to convert data transfer rates from IDE (UDMA-66) to Fast Ethernet (100 Mbps) with this easy-to-use online unit converter. Understand the difference between legacy storage device speeds and networking standards for accurate performance comparisons.

IDE (UDMA-66)

Ethernet (fast)

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

IDE (UDMA-66) to Ethernet (fast) Conversion Table

IDE (UDMA-66)	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-66) to Ethernet (fast) Conversion Table
IDE (UDMA-66)	Ethernet (fast)

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What Is This Tool?

This tool converts data transfer rates from IDE (UDMA-66), a legacy PATA storage interface, to Fast Ethernet, a common networking standard with rates of 100 megabits per second. It enables users to compare burst/transfer speeds of older storage devices with typical local-area network speeds.

How to Use This Tool?

Enter the value in IDE (UDMA-66) units you want to convert
Select the source unit as IDE (UDMA-66)
Choose the target unit as Ethernet (fast)
Submit to view the equivalent data rate in Fast Ethernet units
Use results to analyze or compare data transfer capabilities

Key Features

Converts from IDE (UDMA-66) transfer mode to Fast Ethernet speed
Supports comparisons between legacy storage and modern network rates
Browser-based and easy to use with straightforward interface
Provides clear output of equivalent data transfer rates
Helps correlate storage device throughput with network performance

Examples

1 IDE (UDMA-66) equals 5.28 Ethernet (fast)
2 IDE (UDMA-66) equals 10.56 Ethernet (fast)

Common Use Cases

Evaluating maximum burst throughput of older PATA hard drives
Configuring drive transfer modes in BIOS or legacy systems
Analyzing transfer speeds in legacy IDE environments
Comparing legacy storage device speeds with network data rates
Setting up small office or industrial network components

Tips & Best Practices

Remember that IDE (UDMA-66) rates are in megabytes per second, while Fast Ethernet rates are in megabits per second
Use this tool for theoretical maximum values rather than real-world performance
Correlate results with actual system capabilities for accurate assessments
Consider protocol and network overhead when interpreting conversions
Verify device compatibility when configuring legacy hardware

Limitations

Conversion reflects theoretical maximum data rates only
Does not account for network congestion or device-specific limits
IDE (UDMA-66) data rates are in megabytes per second, Fast Ethernet in megabits per second, requiring careful unit consideration
Real-world transfer speeds may differ due to protocol overhead and hardware constraints

Frequently Asked Questions

What does IDE (UDMA-66) mean?: IDE (UDMA-66), also known as Ultra DMA Mode 4 or ATA-66, is a Parallel ATA transfer mode with a maximum theoretical raw data rate of 66.7 megabytes per second for legacy PATA storage devices.
What is Fast Ethernet?: Fast Ethernet refers to IEEE 802.3 standards providing a nominal data rate of 100 megabits per second, typically using 100BASE-TX or 100BASE-FX for local-area network connections.
Why is the conversion ratio 1 IDE (UDMA-66) to 5.28 Ethernet (fast)?: This ratio reflects the comparison of IDE (UDMA-66) data rates in megabytes per second to Fast Ethernet speeds in megabits per second, converting storage burst throughput to networking data rates.

Key Terminology

IDE (UDMA-66): A Parallel ATA transfer mode with a theoretical maximum data rate of 66.7 megabytes per second, used for legacy PATA storage devices.
Fast Ethernet: An Ethernet standard under IEEE 802.3 delivering 100 megabits per second data rate over twisted-pair or fiber cables for local-area networking.
Conversion Rate: The factor used to convert data transfer speeds between IDE (UDMA-66) and Fast Ethernet, here 1 IDE (UDMA-66) equals 5.28 Ethernet (fast).

Quick Knowledge Check

What is the maximum theoretical data rate of IDE (UDMA-66)?

100 megabits per second

66.7 megabytes per second

5.28 megabytes per second

Fast Ethernet typically operates at what nominal speed?

100 megabits per second

66.7 megabytes per second

1 gigabit per second

Which unit does IDE (UDMA-66) data rate use?

Megabits per second

Megabytes per second

Kilobytes per second

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