4 Replies Latest reply: Sep 14, 2013 2:54 PM by iHamed's iPhone
iHamed's iPhone Level 1 Level 1 (0 points)

Hello everyone


I bought MBP newly very interesting Compared with PC




I am disappoint when see download speed at Macbook Pro Compared with old PC


download speed with


SAME Download link

SAME Internet Connection



at PC (windows 8) is 150KB/S but download speed with MBP ( OSX 10.8.2) isn't more 12KB/S !!


why ?


( system directly to modem by an Ethernet cable )


I search my Problem and see many MAC user have my issue


Please Google "Slow Download Speed Mac "


see this discussion




Slow Download Speed on macbook pro





Why Apple Support don't refer any solution ?



what do I must do ?



Use PC for download ?!!

MacBook Pro, OS X Mountain Lion (10.8.3)
  • Camelot Level 8 Level 8 (46,450 points)

    Are you measuring this against wall-clock (i.e. duration) time, or just going by what you see on screen?


    For example, does any given download take, say, 5 minutes on the Windows machine, and 50 minutes on the Mac (which is what your statement implies)? Or do they take about the same amount of time.


    The reason I ask is that for the longest time (and maybe still), Windows reports downloads in kiloBITS per second whereas Mac OS apps typically report kiloBYTES per second. Since there are 8 bits per byte the Windows figures are inflated. Measuring against real-world time (using a clock, watch or other timer) is a far better way to gauge relative download speeds (and should be tested against a decent-sized download, not just a 10KB file).

  • iHamed's iPhone Level 1 Level 1 (0 points)

    Dear Camelot


    I know BYTE=8 bits !


    I converted download speed at windows to  kiloBYTES/Second


    at my PC : 150 kiloBYTES/Second


    at my Mac : 12 kiloBYTES/Second


    I download same file at Win 5 Min  but at Mac maybe 1 houre

  • Linc Davis Level 10 Level 10 (173,800 points)

    Please read this whole message before doing anything.

    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.


    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and  Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.

    The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.


    Test while in safe mode. Same problem?


    After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

  • iHamed's iPhone Level 1 Level 1 (0 points)

    Thanks for response



    after upgrade to OS X v10.8.4 my problem resolved now