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imac slow downloads

352 Views 7 Replies Latest reply: Jan 16, 2013 1:52 PM by garyc0424 RSS
garyc0424 Calculating status...
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Jan 13, 2013 12:34 PM

my imac is slow to download from the internet, my isp provides download speed of 50 mbps, my imac speedtest is only 35mbps, yet my macbook will downlod at 50 mbps, I have run the speediest both hard wired and with wifi

iMac (21.5-inch Mid 2011), OS X Mountain Lion (10.8.1)
  • BDAqua Level 10 Level 10 (114,705 points)
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    Jan 13, 2013 1:45 PM (in response to garyc0424)

    Open Network Utility in Applications>Utilities>Info tab, select Ethernet & what is the Link Speed & are there any Errors/Collisions on the right?

     

    Open Network Utility in Applications>Utilities>Info tab, select Airport/Wifi & what is the Link Speed & are there any Errors/Collisions on the right?

  • a brody Level 9 Level 9 (62,010 points)
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    Jan 13, 2013 1:45 PM (in response to garyc0424)

    Every computer connected simultaneously will slow down your connection.

  • BDAqua Level 10 Level 10 (114,705 points)
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    Jan 13, 2013 7:07 PM (in response to garyc0424)

    One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...

     

    PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive

     

    Reboot, test again.

     

    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.

     

    Check the System Preferences>Other Row, for 3rd party Pref Panes.


    And in your instance it might possibly be Spotlight or Time Machine messing with you...

     

    Open Activity Monitor, Show:>All Processes, sort on CPU%, see if anything using too much CPU% when this happens, click on Memory tab, do you have many Pageouts?

     

    Open Console in Utilities & see if there are any clues or repeating messages when this happens.

  • a brody Level 9 Level 9 (62,010 points)
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    Jan 13, 2013 7:17 PM (in response to garyc0424)

    Is Printer sharing or iTunes or iPhoto sharing turned on in the iMac? If it is trying to enable Rendezvous without other devices that can still eat up bandwidth.  Turning off sharing on all applications that can share unless absolutely needed can help speed things along.

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