Upgrading an iMac 27"

I own a mid 2010 iMac 27" with 8GB RAM running OSX Yosemite. Like its owner, it's getting older and slower! But, I love the display and the keyboard and touch pad are still working. So ......... what are my choices to upgrade this to something better.

I'm thinking that adding a MacMini might be the way to go but I would appreciate any advice from others.

Cheers

Bob

Earlier Mac models

Posted on Sep 9, 2024 8:30 PM

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Posted on Sep 10, 2024 3:41 AM

StraitenedOut wrote:

Sorry. I thought I was being clear but maybe not clear enough. I really like everything about the iMac except its performance so I was looking for advice on upgrading by keeping the monitor, keyboard and touchpad but adding……..?something? Are there alternatives to adding the Mac Mini?


There are no hardware upgrades for your 27" 2010 Mac that would let it run any version of the operating system that is more recent than High Sierra.


You can expand RAM all the way to 16 GB (official limit) or 32 GB (actual limit). You can add external USB drives and Firewire drives – but the USB ports only run at USB 2 speeds, and there seems to be only one place that still carries Firewire 800 drives and enclosures these days. (That would be Other World Computing.). Even the SATA bays run at 3.0 Gbps (SATA-2 speed) instead of 6.0 Gbps (SATA-3 speed), which could limit the performance of an internal SATA SSD.


I would be surprised if there was any practical way to upgrade the CPU or GPU that made sense at this late date. Those were never user-upgradable.


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Your Mac supports Target Display Mode using DisplayPort input.

iMac (27-inch, Mid 2010) - Technical Specifications - Apple Support

"27-inch models also support input from external DisplayPort sources (adapters sold separately)"


If that was all there was to it, you could use your iMac as a Target Display for a current Mac with the aid of a USB-C to Mini DisplayPort adapter cable. Unfortunately, Apple added restrictions on the video source. Now it has to be another Mac, released in 2019 or earlier, running Catalina or earlier. No current Mac supports using your iMac as a Target Display.

Use your iMac as a display with target display mode - Apple Support

7 replies
Question marked as Top-ranking reply

Sep 10, 2024 3:41 AM in response to StraitenedOut

StraitenedOut wrote:

Sorry. I thought I was being clear but maybe not clear enough. I really like everything about the iMac except its performance so I was looking for advice on upgrading by keeping the monitor, keyboard and touchpad but adding……..?something? Are there alternatives to adding the Mac Mini?


There are no hardware upgrades for your 27" 2010 Mac that would let it run any version of the operating system that is more recent than High Sierra.


You can expand RAM all the way to 16 GB (official limit) or 32 GB (actual limit). You can add external USB drives and Firewire drives – but the USB ports only run at USB 2 speeds, and there seems to be only one place that still carries Firewire 800 drives and enclosures these days. (That would be Other World Computing.). Even the SATA bays run at 3.0 Gbps (SATA-2 speed) instead of 6.0 Gbps (SATA-3 speed), which could limit the performance of an internal SATA SSD.


I would be surprised if there was any practical way to upgrade the CPU or GPU that made sense at this late date. Those were never user-upgradable.


----------


Your Mac supports Target Display Mode using DisplayPort input.

iMac (27-inch, Mid 2010) - Technical Specifications - Apple Support

"27-inch models also support input from external DisplayPort sources (adapters sold separately)"


If that was all there was to it, you could use your iMac as a Target Display for a current Mac with the aid of a USB-C to Mini DisplayPort adapter cable. Unfortunately, Apple added restrictions on the video source. Now it has to be another Mac, released in 2019 or earlier, running Catalina or earlier. No current Mac supports using your iMac as a Target Display.

Use your iMac as a display with target display mode - Apple Support

Sep 9, 2024 9:53 PM in response to StraitenedOut

You can upgrade that iMac as far as macOS 10.13.6 (High Sierra).


Unfortunately, High Sierra is very old, and it's hard to get applications for it. Microsoft and Adobe abandoned it long ago. There is a version of Firefox (Firefox 115 ESR) that runs on it, but it won't get even "critical security patches" as of some time this month. There are versions of LibreOffice that will run on it, but they are old and unsupported, and you'd have to dig in the archives to find them.


If you want to run old 32-bit games, or import digital video from a MiniDV or Digital8 camcorder, you could continue to use it for that.


If you want to run productivity applications, and the ones you already have aren't good enough, it might be time to bite the bullet and get a newer Mac.

Sep 9, 2024 9:37 PM in response to StraitenedOut

Well a 2010 is a real antique at 15 years old. A new MM would dramatically outperform it. You question is pretty unclear, about what are your choices. You can select any new(er) Mac you want but we have no idea what your needs are so it's difficult to provide you with anything more specific. New (current model) Macs are:


  • Mac Minis
  • 24" iMac
  • MacBook Airs
  • MacBook Pros
  • Mac Studio
  • Mac Pro


All have completely different form factors but all run the same version of Mac OS so functionally they all work the same. However as I mentioned earlier without having any idea of what you use a computer for we cannot point you down a path that makes sense for your needs.


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Upgrading an iMac 27"

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