What Is This Tool?
This converter helps translate data transfer values from IDE (UDMA-33) mode to IDE (UDMA mode 1). Both are legacy Parallel ATA data transfer standards used in older computer hardware. It provides an easy way to understand and compare theoretical maximum transfer rates between these two PATA modes.
How to Use This Tool?
-
Enter the data transfer value in IDE (UDMA-33) units.
-
Select IDE (UDMA mode 1) as the target unit.
-
Initiate the conversion to see the equivalent value based on the defined rate.
-
Use the result to compare or configure older PATA hardware performance.
Key Features
-
Converts data transfer rates between IDE (UDMA-33) and IDE (UDMA mode 1).
-
Based on the theoretical maximum burst transfer rates for legacy PATA interfaces.
-
Useful for benchmarking, configuring, and troubleshooting older IDE drives.
-
Browser-based and easy to use without installation.
Examples
-
1 IDE (UDMA-33) equals 1.32 IDE (UDMA mode 1).
-
5 IDE (UDMA-33) equals 6.6 IDE (UDMA mode 1), calculated as 5 × 1.32 = 6.6.
Common Use Cases
-
Benchmarking throughput of legacy PATA hard drives and optical drives.
-
Configuring BIOS or controller transfer modes on older computers.
-
Comparing legacy PATA performance when upgrading or replacing older drives.
-
Troubleshooting cable or controller compatibility and data errors.
Tips & Best Practices
-
Use the tool to ensure proper configuration of legacy IDE/PATA drives.
-
Verify cable and controller compatibility for selected UDMA modes.
-
Reference theoretical transfer rates to guide hardware diagnostics.
-
Remember actual transfer speeds may vary due to hardware quality and setup.
Limitations
-
Conversion is theoretical and reflects maximum burst transfer rates only.
-
Actual speeds depend on hardware, cables, and other factors in legacy systems.
-
Applicable only to older Parallel ATA interfaces, not modern SATA or NVMe devices.
Frequently Asked Questions
-
What does IDE (UDMA-33) mean?
-
IDE (UDMA-33) is a Parallel ATA data transfer mode using DMA with a maximum theoretical burst rate of 33.3 MB/s, designed for legacy PATA drives.
-
Why convert from IDE (UDMA-33) to IDE (UDMA mode 1)?
-
Converting helps compare performance metrics and configure or troubleshoot older PATA devices and BIOS/controller settings.
-
Does this conversion reflect actual transfer speeds?
-
No, the conversion is theoretical and actual speeds vary depending on hardware quality, cables, controllers, and environment.
Key Terminology
-
IDE (UDMA-33)
-
A Parallel ATA data transfer mode using Ultra DMA mode 4 with a maximum burst rate of about 33.3 MB/s in legacy PATA interfaces.
-
IDE (UDMA mode 1)
-
An Ultra DMA transfer mode in Parallel ATA interfaces with a theoretical maximum transfer rate of around 25 MB/s used in older PATA devices.
-
DMA (Direct Memory Access)
-
A data transfer method allowing hardware subsystems to access main memory independently of the CPU to increase throughput.
-
PATA (Parallel ATA)
-
An older standard for connecting storage devices such as hard drives and optical drives in computers.