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  1. #1

    mknabster's Avatar
    Member Since
    May 22, 2007
    Posts
    894
    Specs:
    15in MBP 2.5GHz Core2Duo | 1.83Ghz Dual G5 PowerMac | 2.0 GHz Dual G5 PowerMac
    Possible that a core dies?
    Is there any possibility that a core could die within a laptop? I have the 2008 MacBook Pro with the Core 2 Duo, and i have noticed that as of late, when i do video production and handbrake encodings, it takes 2x as long as what it used to months ago. Like a handbrake encode went from taking an hour to two and half, or a premiere pro encode takes 6 hours for a 1080p 30minute video. Now i did downgrade from Lion to Snow LEopard since i was having GPU issues, which i think has extended into SL now since Starcraft 3 doesn't play at High like it used to, now it can't go past Medium. So, any idea what could have caused this slowdown?
    -Matt

  2. #2

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    34,546
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Download Cinebench 11.5:

    MAXON | 3D FOR THE REAL WORLD: CINEBENCH

    ...and run the cpu test. If it shows only 1 core working...then you have a "dead core". If it shows 2 cores working at the same time...then the slow down is something else.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  3. #3

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    48,236
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    To be honest, I've never heard of one core dying but I suppose anything can happen. Run the test as suggested by Nick but I'm also thinking that your hard drive may be the bottleneck. Be sure to test it with the SMART reporter.

  4. #4

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    34,546
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    My experience with dead cores may lie more with Powermac G5's & Mac Pro's...which have multiple cpu's:

    - Powermac G5's...two cpu's (one cpu could be dead) leaving one working cpu
    - 8-core Mac Pro...two cpu's (one cpu could be dead) leaving one working cpu (4-cores)

    I agree...I don't think that I've run across a Core 2 Duo or a quad-core i5 or i7 (a single cpu setup)...that had an individual dead core.

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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