USB2.0 Finally Delivers its Full Speed on Mac

Discussion in 'MacBytes.com News Discussion' started by MacBytes, Oct 24, 2008.

  1. macrumors bot

    Joined:
    Jul 5, 2003
    #1
  2. macrumors 6502a

    Sayer

    Joined:
    Jan 4, 2002
    Location:
    Austin, TX
    #2
    Maybe Apple management is finally getting their people to fix existing features of Mac OS X instead of piling on more and more features that don't quite work right point release after point release.

    I am referring to features that a software developer would make use of, not high-level things like iApps or MobileMe.
     
  3. macrumors G3

    Kilamite

    Joined:
    Mar 20, 2007
    #3
    USB 2.0 going its "proper" speed on a Mac does not justify the lack of FireWire on the new MacBook.
     
  4. Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #4
    It's great that USB speeds have picked up, but...I don't really understand the methodology. I don't see anywhere in the Numerique article the size of the total transfer being done, in particular.

    I expect USB2 to have burst transfer speeds as fast or faster than FW. It's supposed to.

    I am very skeptical if they're claiming that USB2 now keeps pace in sustained transfers with FW400....
     
  5. macrumors 6502

    wpc33

    Joined:
    Jul 2, 2006
    Location:
    Vancouver, BC
    #5
    How do I know this isn't FUD by Apple's PR team?
     
  6. macrumors 603

    shadowfax

    Joined:
    Sep 6, 2002
    Location:
    Houston, TX
    #6
    Take an external hard drive to a mac store and test one.
     
  7. macrumors 68020

    mainstreetmark

    Joined:
    May 7, 2003
    Location:
    Saint Augustine, FL
    #7
    http://en.wikipedia.org/wiki/Mac_OS_X_v10.6
     
  8. macrumors member

    Joined:
    Feb 20, 2008
    Location:
    St. Louis, MO
    #8
    Well its good their doing it for the older Mac's as opposed to the new ones. It would be nice if they would enable the four-finger gestures on the previous generations MBP's (I believe I've read that the actual chip is the same in both.)
     
  9. macrumors 65816

    Luap

    Joined:
    Jul 5, 2004
    #9
    Thats like.. 5 years late!? But never mind.. Better late than never. I still prefer Firewire mind.
    Seems ironic that Apple get it sorted out just as USB 3 is knocking at the door.
     
  10. macrumors regular

    kmiahali

    Joined:
    Jul 28, 2008
    Location:
    Manhattan, NYC
    #10
    people have to stop complaining about firewire support on new macs. one day will come when apple products charge wireless. at the rate they are going , its bound to happen.:apple:
     
  11. macrumors 68000

    Joined:
    Dec 24, 2001
    Location:
    Carson City, NV
    #11
    USB 3.0 late 2009 at best, early 2010 most likely.
     
  12. macrumors 6502

    Joined:
    Jul 14, 2006
    #12
    This has nothing to do with OS X. If it did, it would mean older usb 2 Macs would now be faster too.
    This was a hardware issue.
     
  13. macrumors 6502

    Joined:
    Jul 14, 2006
    #13
    No, USB 2 is not supposed TO BE FASTER, IT'S BUS has a limit of 480mb of transfer vs 400 for FW. This has nothing to do with the actual data transfer speed which is on average 20-30mb for USB 2, 30-40 for FW400 and 80-90 for FW800.
     
  14. macrumors G3

    Kilamite

    Joined:
    Mar 20, 2007
    #14
    Don't know what you are talking about do you? It is the theoretical transfer speed.

    USB 2.0's theoretical speed is 480Mbps (read megabits per second). There is 8 bits in a byte, so 480/8=60. So, 60 megabytes per second. Obviously, USB 2.0 never reaches that in practise.

    FireWire 400 operates at up to 400Mbps. I'll let you do the maths.
     
  15. macrumors 6502a

    Joined:
    Aug 6, 2006
    Location:
    Birmingham, UK
    #15
    But you're not including overheads and lack of controller that cripples USB 2.
     

Share This Page