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  1. #1
    New Lounger
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    Have noticed this on 2 different home built rigs since switching to win 7 pro on both. One has an AMD chipset and the other is Intel so I guess the issue is not chipset or driver related.

    What I notice is basically 2 different speeds when transferring large files (300 MB to 2 Gig) to Patriot xporter 8gig flash drives.

    Most transfers show 9 MB/sec., but about one third of the time these files will transfer at 19 MB/sec. The files are mostly avi's and a few iso's.

    Rigs are idle during these transfers. Once a transfer starts at either of these speeds it does not change during that transfer.

    My question is: Can I make this transfer speed "lock" at the 19MB/sec.?

  2. #2
    Super Moderator bbearren's Avatar
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    Are you getting this behavior from all USB ports, or are you using the same port (on each machine) every time? In your BIOS, how do you have your USB properties set?
    Create a fresh drive image before making system changes, in case you need to start over!

    "The problem is not the problem. The problem is your attitude about the problem. Savvy?"—Captain Jack Sparrow "When you're troubleshooting, start with the simple and proceed to the complex."—M.O. Johns "Experience is what you get when you're looking for something else."—Sir Thomas Robert Deware.
    Unleash Windows

  3. #3
    Super Moderator CLiNT's Avatar
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    My question is: Can I make this transfer speed "lock" at the 19MB/sec.?
    No, you cannot lock the speed in at a specific rate. You'll have a burst of speed in the begining, then it will peter down somewhat. It will also depend on what else you or the os is doing at the time, overtly or covertly.
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  4. #4
    4 Star Lounger
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    What you are probably seeing is a difference in the file types themselves. How well an avi file is 'compressed' depends on the application it was created on and the output settings.

    Terry

  5. #5
    New Lounger
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    bbearran-all ports same behaviour.
    have tweaked all bios options with no change.

    clint-speeds start out about 2 MB/s slower than peak. Meaning a 9 starts at 7 and a 19 starts at 17. Then climbs to 9 or 19. Usually 9.

    Terry-You may have it on the head. Next time I get a 19 MB speed I will try mutiple transfers with it to see if speed changes.

    Thanks all!

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