ATA vs. UDMA

Hey,

yet another question for you https://www.sharkyforums.com/images/.../2005/06/5.gif What's the difference between ATA66 and UDMA66 or ATA100 and UDMA100? thanks,

Agathron

These terms are often used interchangably. ATA is the specification, and DMA just specifies Direct Memory Access. The 66 means that a drive and/or controller is rated for operation at the 66MB/s burst transfer rate - same goes for the 100 (although none of the drives available today reach these specifications yet). Most importantly - get a 7200 RPM drive https://www.sharkyforums.com/images/.../2005/06/5.gif

Ciao!

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Chris Angelini
Editor
[email protected]

I just saw a couple of drives on pricewatch that claim to be ATA-100. Is this just marketing bs or do they actually meet the specifications?

Agathron

If they are advertised as ATA/100, then chances are they are legit - just don't expect to notice the performance increase (provided you have the controller card and the 80-conductor cable).

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Chris Angelini
Editor
[email protected]

Thanks again https://www.sharkyforums.com/images/.../2005/06/5.gif

Agathron