High CPU Temps. After SSD Install

Discussion in 'MacBook Pro' started by vbrad26, Jul 12, 2013.

  1. vbrad26 macrumors member

    Jul 4, 2010
    Hey all,

    I did a quick search (google and MacRumors) about this but did not really come up with anything.

    I just replaced my failing hard drive in my late 2011 15" 2.2 MacBook Pro with a Samsung 840 256gb.
    Before I put in the SSD I was getting temps of around 100 deg. F or so.
    Now with the SSD in there the temp readings (from iStat pro) are anywhere between 120-165 deg. F.
    Fans are not acting up or anything. They seem to be at normal speeds.
    Currently I'm at 153deg. F and fans are just a click under 3k RPM

    Whats up with that?

    But everything else is great. The SSD was a HUGE improvement!
  2. Doward macrumors 6502a

    Feb 21, 2013
    Interesting - there's no good reason for it. Did you perhaps dislodge some dust and block a fan while in there? Maybe accidently disconnect a fan?

    Verify that BOTH fans are spinning in iStat Pro.
  3. CarreraGuy macrumors regular


    Jan 15, 2013
    Have there been any changes to your system besides the ssd upgrade? SW upgrade, OS, etc..?

    You should check running processes via some utility like Activity Monitor and check activity.
  4. thundersteele macrumors 68030

    Oct 19, 2011
    It is probably spotlight that is regenerating the index. Can take a few days to complete. You should see a process called "mds" or "mds_worker" or something like that using some % of your CPU.
  5. vbrad26 thread starter macrumors member

    Jul 4, 2010
    Thanks for the replies!

    Definitely no dust in the fans...in fact, I actually cleaned everything up!
    both fans seem to be working properly.

    No other upgrades aside from the SSD.
    Nothing in Activity Monitor looks out of place either and that's why I'm sort of stumped.

    Maybe iStat is just acting up...
  6. vbrad26 thread starter macrumors member

    Jul 4, 2010
    Still having this issue!
    Any other suggestions?
    I even went out and bought one of those cooling pads but it seems like it does nothing.
  7. fenjen macrumors 6502


    Nov 9, 2012
    Try resetting SMC: http://support.apple.com/kb/ht3964
  8. vbrad26 thread starter macrumors member

    Jul 4, 2010
    Alright going to try that now.


    Nope lol.
    Right now at 160deg. F
  9. MacModMachine macrumors 68020


    Apr 3, 2009
    check your activity monitor , most likely mdworker running at a highload , when you insert a new drive spotlight reindexes everything.
  10. vbrad26 thread starter macrumors member

    Jul 4, 2010
    I always have Activity Monitor up and running.
    I have had the HD for almost a month now.
    mdworker is not currently running.
  11. ciarabelle macrumors newbie

    Feb 12, 2009
    VA, USA
    this is happening to me too - any other hints?
  12. chibisukee macrumors newbie

    Jun 23, 2012
    Is something actually using your CPU? Maybe the quicker response from the SSD allows the CPU to wait on the hard drive less - allowing it to do more work and heating it up in the process.
  13. luffytubby macrumors 6502a


    Jan 22, 2008
    someone else had this problem, but it was because their system was indexing. since they came for a fresh OSX install indexing was running. but you said nothing was wrong in activity monitor, so???:confused:

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