UDMA 33 vs. UDMA 66 drives...
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Thread: UDMA 33 vs. UDMA 66 drives...

  1. #1
    Join Date
    Feb 1999
    New York, NY, USA

    UDMA 33 vs. UDMA 66 drives...

    This question is for the Pioneer 16x DVD ROM drive.

    It appears that there are two versions of this drive, DVD-116 and DVD-115. Pioneer only advertises the DVD-116 but resellers have listed both drives. According to a store, the DVD-115 is UDMA 33 and has a transfer rate of 33MBps. The same store claims that the DVD-116 is UDMA 66 but it's transfer rate is also 33MBps.

    Is there a speed difference between:
    DVD-116 UDMA 66 @ 33MBps
    DVD-115 UDMA 33 @ 33MBps

    The DVD-116 is more expensive.

    Check the specs of the drives here:

    DVD-115 http://www.goroyalpc.com/DVD/550.htm
    DVD-116 http://www.goroyalpc.com/DVD/747.htm

    Intel Pentium 4 2.53GHz
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  2. #2
    Join Date
    Jan 2001
    Perth, Western Australia
    I think you may find it's totally irrelevent. The transfer rate of a DVD is no where near the rate of UDMA 66 so either will probably yield the same results.

    I'd rather be GLIDING

  3. #3
    udma 66 means transfer rate of 66mb p/s.
    its not possible to meet that standard, but only be able to transfer at 33mb p/s (it should also be able to transfer at 66). (ultra direct memory access at 66mega bytes per second)

    -in your links, it looks like a typo...
    the sustained transfer rate is 21.6 mb p/s anyway....so it wont matter much...
    don't make me send you to /dev/null!

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