Please visit the new Mac-Forums Facebook page:
Join Us @ Mac-Forums Facebook Page



Page 1 of 2 12 LastLast
Results 1 to 15 of 29
  1. #1
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?
    Hi all!

    Thanks for your help and for reading this post. I’ll try to be as short as possible. I have an iMac 2010 and it’s still running like a champ today. This machine became very sluggish twice, once in 2016 when I installed Mavericks on it. So I bought some RAM, upgraded it to 14GB of RAM and then it ran like new. Last year it became very slow again but the issue went away when I emptied my 1TB HD which was almost totally full.

    This year I finally had some money to upgrade this old machine. After months searching I found a great deal, a 2017 iMac (4K retina, core i5, Radeon Pro 555 2GB, 8GB RAM, 1TB HD) for 1.250 USD (yes, that’s what we call a pretty good deal here in Brazil). I bought it. When I tested it I noticed that it was running poorly, the system was sluggish but I thought “well, I’m going to format this, install Catalina and everything will run smoothly”. I went home and did that but, oh, I was wrong. Since I formatted and installed Catalina this machine is running very poorly. Compared to my 2010 iMac it’s super annoying to use this and there were times I wished to throw it in the wall.

    I have screens freezing / unresponsive and loading icons all the time. I’m using it as a regular user for daily chores (Chrome browser with a few tabs opened and very lightweight apps opened like Spotify and Notes). I’d like to know if there’s a way to inspect the hardware via software to check if there’s some faulty component causing those issues. I already installed iStats Menu but I can’t see anything wrong judging by its stats.

    I already bought two 8GB of RAM and I have a SSD that I want to install on it. I bought a kit to open it as well. These things are coming from China and they’ll take a long time to get to my house (2 months or so). It’s my fist time doing that and I know it’s not going to be an easy task but companies here charge 250 USD just to install RAM and SSD on an iMac (if you already bought the RAM+SSD, if not they can charge you up to 500 USD or more for this job).

    I’m trying to work using this computer but it’s such a chore. I don’t have those problems with my old iMac and that bothers me. Both are running mechanical HDs so I don’t think that this machine is slow because of the HD. There are cases here in Brazil from people selling old 2013/2014 MacBook Pros that are actually 2009/2010 MacBooks. They change the About screen on the system to pass it as a newer model. So after knowing this, anything is possible, and this machine is so slow that I really doubt about its specs.

    Anyway, if anyone can help me with that I’ll be very glad and grateful!

    Thank you so much if you read all this rant. If you don’t want to waste your time just read the TL-DR.

    TL-DR: I bought an used 2017 iMac (MRT32BZ/A) last month and it’s running slow as hell. It seems very inferior compared to my iMac 2010. I have screens freezing / unresponsive and loading icons all the time. I’m using it as a regular user for daily chores (Chrome browser with a few tabs opened and very lightweight apps opened like Spotify and Notes). I’d like to know if there’s a way to inspect the hardware via software to check if there’s some faulty component causing those issues.

  2. #2
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    7,095
    Your Mac's Specs
    L2014 Mac mini macOS 15, iPhone 8+ iOS 13, 12.9" iPad Pro 1 iPadOS 13,  Pencil 1
    Rep Power
    14
    You can run Apple Diagnostics, How to use Apple Diagnostics on your Mac - Apple Support. You can also check Activity Monitor, in Applications > Utilities.

    Have you run Disk Utility > First Aid, on the hard drive?
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  3. #3
    Hi, @ferrarr! Thanks for your suggestions! I'm going to run Disk Utility - First Aid today. I was going to run a little sooner but I needed to work so I'll run it later. Judging just by the monitoring of iStats I see no issues on CPU / Memory and HDD usage. But if I had to guess... I think that the problem is with the HD.

  4. #4
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    25,243
    Your Mac's Specs
    iMac, i7 4GHz, 32GB memory, 1TB Blade, macOS Catalina,
    Rep Power
    32
    Sunds like you have a slow old platter drive in that computer. In particular the 21.5" model is slow as molasses using a 5400rpm laptop style drive.The go was to have purchased a model with a fullSSD/Blade PCI-e drive.
    Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  5. #5
    Here's one example of how slow / sluggish it is. It's like that all the time



  6. #6
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    59,334
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 7+, iPhone 8, Numerous iPods, Catalina
    Rep Power
    54
    Harry is likely spot on. The 2017 iMac 21.5" models use a slow 5400 RPM drive unless they have a Fusion drive installed instead. But even at that, they're slow.

    Also, the description he gave may indicate a failing hard drive. Removing it and replacing it with an SSD should vastly improve speed.

    Edit: Just watched the video and it's beach balling with just about every movement of the cursor. Does look like a failing hard drive to me.

  7. #7
    Another example


  8. #8
    I'll surely do that! I'm wondering if it's possible to run the system from an external SSD right now while I wait for the stuff to upgrade the machine. Also, do you know if I'll need some adaptor to replace the HD with the SSD? I haver a Crucial MX500

    - - - Updated - - -

    What I don't understand is why my old 2010 iMac with a 5400RPM hard drive runs so smoothly and flawlessly with worst specs and the 2017 iMac runs like a 7 year old Windows machine?

    - - - Updated - - -

    No issues found after running Apple Diagnostics. I ran Disk Utility - First Aid as well and had zero issues.

  9. #9
    Quote Originally Posted by chscag View Post
    Edit: Just watched the video and it's beach balling with just about every movement of the cursor. Does look like a failing hard drive to me.
    Do you know if it's possible to diagnose a failing HD via software somehow?

  10. #10
    I'm googling on how to run an external SSD with an iMac. If all it needs is a USB 3.0 to SSD adapter cable I'll try that.

  11. #11
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    7,095
    Your Mac's Specs
    L2014 Mac mini macOS 15, iPhone 8+ iOS 13, 12.9" iPad Pro 1 iPadOS 13,  Pencil 1
    Rep Power
    14
    Itís hard to know, when the entire screen is not seen. Other apps may be open and using resources. You should also use Activity Monitor and look at ram/memory usage.


    Sent from my iPad using Mac-Forums
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  12. #12
    I have the same machine but with an Apple SSD and have never seen that sort of performance degradation. It would be nice if you would show us a screenshot of Activity Monitor sorted by CPU, or run this in a terminal session and give us a screenshot. (Wait a few seconds for it to sort.)

    Code:
    /usr/bin/top -ocpu -F -s 2 -n30

  13. #13
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?

    Member Since
    Nov 16, 2019
    Location
    London, UK
    Posts
    14
    Rep Power
    1
    Ratsima, That code is nice, got any more tips or please tell where to find these. Thanks

  14. #14
    The slowest 2017 iMac on Earth - How to diagnose which is the issue?

    Member Since
    Mar 11, 2019
    Location
    Nova Scotia, Canada
    Posts
    25
    Your Mac's Specs
    5K iMac 27" 4.2ghz / Mojave
    Rep Power
    1
    Have you given EtreCheck a try? It's helpful in diagnosing issues...

  15. #15
    Quote Originally Posted by TotalSolutions View Post
    Ratsima, That code is nice, got any more tips or please tell where to find these. Thanks
    I just worked this one up myself. I have an alias to it in my .bashrc file:

    alias zop='/usr/bin/top -ocpu -F -s 2 -n30'

    So, if I want to run it I don't have to type the whole thing. I usually keep a terminal window open on my desktop all the time with this running. That way I can easily spot a runaway process.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Adding RAM to IMac 4k 21.5' 2017
    By sedohre681 in forum Apple Desktops
    Replies: 8
    Last Post: 10-10-2019, 03:43 PM
  2. How to Move Software Files from iMac 2009 to iMac 2017?
    By WritersItch in forum macOS - Operating System
    Replies: 5
    Last Post: 06-29-2018, 09:56 AM
  3. imac 2017
    By saxaphonist in forum Apple Desktops
    Replies: 13
    Last Post: 04-12-2018, 01:28 AM
  4. Dual Monitors (iMac 27 2013 & iMac 27 2017) with Windows 7
    By DUALMONITOR in forum Running Windows (or anything else) on your Mac
    Replies: 2
    Last Post: 03-06-2018, 03:58 PM
  5. As fast as your slowest piece...
    By VeritasCCT in forum Apple Notebooks
    Replies: 1
    Last Post: 02-12-2006, 11:01 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •