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By adc ·
What's the difference bet. EIDE and ULTRAATA hard disk and their usage.

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by TheChas In reply to ULTRA ATA HARD DISK

Both are IDE drives.

The IDE hard drive standard has been updated over the years to cover improvements in technology.

EIDE is 2nd or 3rd generation IDE devices. It includes the data transfer rates of UDMA33 and UDMA66

The ULTRA-ATA standard covers the newest IDE drives that have either ATA100 or ATA133 data transfer speeds.

While both drive styles are generally compatible, whenever practical, you want to use the older EIDE drives on older hardware and the ATA drives on newer hardware.

If you use an EIDE drive on a newer system, the slower data transfer rate of the drive will slow the system down.

If you use an Ultra ATA drive on an older system, you will be wasting the faster data transfer speed, and possibly some capacity.
(Although, you can get both by installing a new PCI IDE controller card.)


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