21" 2012 iMac, being super slow, please help

Discussion in 'iMac' started by GadgetGeek407, Oct 17, 2016.

  1. GadgetGeek407 macrumors 6502a

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    florida
    #1
    I have 8gb 1tb. I recently upgraded to Sierra and also have vmware fusion installed with windows 7. I noticed once I upgrade everything got VERY slow, I found a few posts talking about how the the icloud backup desktop feature could be causing it, I disabled it, still was slow. I then called Apple Care, they tried all kinds of steps and nothing worked.

    I then deleted my entire hard drive and did a fresh install of Sierra and it was noticeably faster but I notice once again it got super slow again. What is causing this slowness? Is there anything I can do to find out? If I even click on chrome or safari it literally takes forever to even open. Same thing when I print anything or open anything. Please help...
     
  2. GadgetGeek407 thread starter macrumors 6502a

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    #3
  3. tubeexperience macrumors 68040

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    #4
    ~$100 for 480 GB

    ~$200 for 960 GB

    ~$500 for 2 TB
     
  4. GadgetGeek407 thread starter macrumors 6502a

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    #5
    can you point me in the right direction for purchase
     
  5. tubeexperience macrumors 68040

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    #6
    Which size do you want?
     
  6. GadgetGeek407 thread starter macrumors 6502a

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    #7
    more than likely the 480gb maybe the 960
     
  7. tubeexperience, Oct 17, 2016
    Last edited: Oct 17, 2016

    tubeexperience macrumors 68040

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    #8
    Here are some of SSDs that you should look at:

    Toshiba OCZ Trion 150

    Mushkin Enhanced Reactor

    ADATA Premier SP550

    SSD prices have went up in the last three months due to NAND shortage, so you'll need to shop around.

    For 480 GB, you should be able to get any of those for $100 or less.

    For 960 GB, you should be able to get any of those for $200 or less.
     
  8. JustMartin macrumors 6502a

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    Feb 28, 2012
    Location:
    UK
    #9
    I have the same model iMac as you and have not experienced any slowing down or other issues. Have you tried running hardware check? Also worth taking a look at activity monitor and seeing whether anything is sucking up your CPU or memory.
     
  9. Fishrrman macrumors G5

    Fishrrman

    Joined:
    Feb 20, 2009
    #10
    OP:

    Since you have a 2012 model with USB3, you could save yourself A LOT of potential trouble by NOT opening the iMac, and using an EXTERNAL SSD in a USB3 enclosure to boot and run the iMac.

    It will be faster, easier, won't cost much more, AND you eliminate all the risks of fooling around inside the iMac. This board gets repeated posts from folks who thought they could open an iMac up, add a drive, and then.... broke something inside.
    Are you sure -- SURE -- that you can open the iMac and do the drive swap without problems?

    An SSD mounted in the proper USB3 enclosure will run nearly as fast as if it were installed on the internal SATA bus. Speeds should be up around 85% of what you'd get from an internal, or even better. Nothing you could notice "in real life" usage.

    You might consider a drive like this:
    http://www.amazon.com/exec/obidos/ASIN/B00ZTRY532?tag=delt-20

    Pretty much just
    - plug it in
    - initialize with Disk Utility
    - install the OS
    - set startup disk pref pane to the external SSD, and then...
    - reboot

    And when the time comes when you get something new, just UNplug the SSD and "take it with you"....
     
  10. tubeexperience macrumors 68040

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    #11
    Using an external SSD doesn't provide as much speed and reliability as an internal SSD.
     
  11. Fishrrman macrumors G5

    Fishrrman

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    #12
    tube wrote:
    "Using an external SSD doesn't provide as much speed and reliability as an internal SSD."

    Your post, regarding "reliability" is simply nonsense, and nothing more.

    I write this post as a result of almost 4 years of booting and running a late-2012 Mac Mini using an SSD sitting in a USB3/SATA docking station. It boots and runs beautifully and almost never crashes. (Aside: it WILL crash if I do something in software that I know in advance will crash it, but in regular use... never.)

    I realize it's "not quite as fast" as if I'd mounted the SSD internally, but the read speeds I get (431mbps) are nearly what I'd get if internally-mounted (isn't the theoretical max for SATA3 around 500mpbs?).
    The differences are measurable using apps that measure such things, but the "real world perception" between the two is barely noticeable, or simply un-noticeable.

    A Mac doesn't care from which device it's booted, so long as the connection is solid.
    Consider all those who for years ran Mac Plus'es, SE's, SE30's, etc. from external SCSI drives (I did).
    All you need is a good copy of the OS and a connection that's speedy.
     
  12. GadgetGeek407 thread starter macrumors 6502a

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    #13
    hmmm interesting this just gave me a lot to think about....
     
  13. GadgetGeek407 thread starter macrumors 6502a

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    #14
    Interestingly enough I once again went into disk utility, erased the 1tb drive then put a clean install of OS Sierra. I couldn't even open two DMG at the same time and still slow. Once I shutdown the system is keeps hanging on a black screen with the mouse showing. The drive in hardware test as well as disk utility tests find nothing wrong. Is it possible the drive is slowly going bad and that's why it's slowing down?

    This machine I use for internet purposes and have VMware with Windows 10 solely for the purpose of running car dealership software.
     
  14. GadgetGeek407 thread starter macrumors 6502a

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    #15
    Looking at the 525gb crucial. I don't need too much cause have plenty externals but figured good to have a decent size for resale.

    If I open it to install wouldn't that void my extended Apple Care?

    I have another iMac where the hard drive went bad it's under warranty I asked if I can pay and they install SSD they said no so what does one do?
     
  15. Taz Mangus macrumors 68040

    Taz Mangus

    Joined:
    Mar 10, 2011
    #16
    There is potential to damage something if you open the iMac to work on it. Not everyone wants to tear apart an iMac to install parts inside it. The idea for a external SSD is the best option. Besides if you needed to use AppleCare Apple could remove the SSD and replace with an Apple authorized HD. The USB3 interface (5Gb/s) is more than fast enough to support the max 600Mb/s speed of the SATA SSD. You could use the external SSD as the boot HD and use the internal HD for user accounts.
     

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