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 Post subject: What is UDMA?
PostPosted: Wed Dec 31, 2008 1:28 pm 
From my understanding UDMA means that the card has a very fast write speed, but I could be wrong. Can anyone please provide an explaination, or tell me if i'm wrong.


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PostPosted: Wed Dec 31, 2008 1:50 pm 
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That's my understanding as well (What is the difference between a UDMA CF card and a standard CF cards?). Only cameras designed to work with the UDMA standard can take advantage of the extra speed, though.

Bob.

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 Post subject:
PostPosted: Wed Dec 31, 2008 1:52 pm 
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CF cards use the same signalling interface as the older parallel ATA hard disks. With a mechanical adapter you can use it in place of a hard disk in a PC. As the interface evolved through the years, they kept adding new modes for ever increasing speeds. UDMA (Ultra Direct Memory Access) is one of the transfer modes the fastest of which can peak at 133 MB/s. I don't know what modes CF cards actually use though.

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