All Questions
Tagged with performance imac
109 questions
3
votes
1
answer
931
views
iMac 21" i3 very slow even on clean install of OS
A friend has a 21" i3 iMac 2019 with 8Gb RAM and it's horrendously slow. He's had Apple Support and Geniuses look at it and they cannot find a problem. The only extra software he has is Photoshop ...
- 201
0
votes
0
answers
155
views
My iMac takes more than 30 minutes to start after a restart
I have an iMac, 2019 with 14.3.1 MacOS. I use to keep it on Sleep, but from time to time, I need to either restart or shutdown. Whenever I do this, no matter if I chose to reopen the apps or not, it ...
- 83
0
votes
1
answer
267
views
iMac 10.15 Catalina takes 2+ hours to boot
One of the 12 iMacs here has a big problem: it takes two hours or more from pressing the button to turn it on until finally ditching the progress bar and showing up the desktop.
It is a MacOS 10.15 ...
1
vote
1
answer
91
views
iMac main/admin account won't log in (iMac mid 2011, High Sierra)
So I'm at a loss with my Imac which suddenly wouldn't log in and I really really don't want to lose all the information I have on there. I've tried to be as detailed as possible but might have ...
0
votes
0
answers
92
views
GPU artifacts and computer freezes on boot
I have a rather strange situation, which I cannot interpret. I have an iMac 2011 27" with an upgraded GPU. This GPU displays occasionally diagonal stripes of artifacts and freezes. This usually ...
- 679
0
votes
1
answer
4k
views
How can I confirm my fusion drive is working?
My iMac suffered a hard drive crash a couple years ago and I was forced to reformat the drive and reinstall from scratch. Performance has been terrible ever since. It might be because the SSD never ...
- 1,073
1
vote
1
answer
161
views
IMac slow, before and after clean install, spinning ball?
My 2008 iMac (4Gb ram) was running super slow! Well slower than normal :-)))
Lots of spinning beach ball.
Backed it up with time machine.
Ran Disk first aid and it said drive was OK.
Erase HD and ...
- 11
1
vote
0
answers
99
views
How to debug laggy, Slowed Down input and feedback on Monterey
What tools can I use to debug a performance issue I am having with my 2020 27" 128 GB iMac running Montery? Besides Activity Monitor because it is just not working... according to Activity ...
- 111
0
votes
1
answer
291
views
iMac freezes and then "soft" restarts/ resets
This could be a general problem, but I couldn't find my exact issue and no solution so far.
I have an iMac 5k 27" 2019, 3GHz i5, 40GB RAM, Radeon 570X, macOS Monterey Version 12.3.1
In the last ...
- 251
1
vote
0
answers
142
views
iMac "pauses" every minute or so
I have an older (2010) iMac that has been running smoothly until a few weeks ago. Since then, the computer has started to "pause" in increasing frequency.
During the "pauses", the ...
user454147
0
votes
1
answer
1k
views
Install macOS Monterey on older/ slower iMac, good for performance?
I have an "old" late 2015 iMac 21,5" that I want to use for photography in the studio (for quality control). But even when it was new it wasn't the fastest because of the slow CPU and ...
- 251
0
votes
1
answer
162
views
Any idea what causes this and if it's fixable ? (iMac 27" 2009) [duplicate]
I'm trying to fix this late 2009 27" imac 2.66Ghz i5
Hasn't been used for some years now.
It turns on and can be used for a while sometimes until it freezes, randomly it seems and some glitches ...
0
votes
0
answers
244
views
iMac 8,1 freezes after selecting option to boot from USB
1 with 4GB of ram and a faulty GPU that shows some glitches at the top of the screen but still works fine and I have it running Linux and I made a bootable USB for Windows 7 using Rufus, and I can ...
1
vote
1
answer
129
views
iMac that slow - is that normal?
I have a iMac Retina4K from the end of 2015 with 3.1GHz Quad-Core i5 and 8GB DDR3 on 21" with a second monitor attached, and a HDD-disk. macOS is Catalina and I am running Firefox, Adobe InDesign ...
- 133
0
votes
0
answers
116
views
iMac screen freezes (audio/mic/etc still function but video freezes)
I've been having a few odd issues with a new iMac. Screen will freeze occasionally (as will my camera if I'm on a video call) but my microphone, audio, and mouse will still move. If it happens on a ...
- 111
2
votes
0
answers
1k
views
Why is my iMac slowing down under multiple users?
Hardware: I have a 2014 iMac 5K. It's got 24GB of RAM and a 2TB SATA SSD I installed myself last summer. Full specs here: https://support.apple.com/kb/SP707?locale=en_US
Software: Catalina 10.15.7 is ...
- 165
0
votes
1
answer
94
views
New iMac freezing every click
I bought this iMac 6 months ago, model late2019, with 64gb RAM and fusion HD 3TB
I ran all the utility tool and I get a lot of MT mapping warnings when i run the First Aid, but they don't seem to be ...
- 101
7
votes
1
answer
1k
views
My mac's UI is randomly freezing for 5-10 seconds throughout the day. How can I figure out what's going wrong?
I have a 2017 27" iMac running macOS 10.14.6. Throughout the day the entire screen will freeze for a period of 5-10 seconds. This happens sporadically and there's no consistent way to trigger it, ...
- 2,760
2
votes
2
answers
955
views
Best release of MacOS for mid-2010 iMac
I have a mid-2010 iMac that I haven't used for a while. I wiped the disk and installed High Sierra (10.13.6). I don't remember the previous release of MacOS it was running with. It has a 3.2GHz i3, 1T ...
- 45
1
vote
0
answers
261
views
Which exact CPU models are used or can be used in the iMac Pro?
The iMac Pro's CPU is upgradable, but documentation on this seems scarce. I found out that the top end 18-core CPU is a Xeon W-2195. Which other CPUs are supported? I could try to find which Xeon-W ...
- 173
2
votes
1
answer
99
views
Why is my 2016 iMac "Beach Balling" a lot after upgrading hardware?
I purchased this system in January, 2016. It says it is a "Late 2015" model. Apple Care told me it is the last generation compatible with non-matching RAM chip amounts so I left the Apple ...
- 543
1
vote
1
answer
109
views
Why is it that my 2014 MacBook pro faster than my 2017 iMac [closed]
My MacBook is old and overheats a lot, and my iMac is new, has 4k resolution, a quad core CPU, but it's slow.
The main difference is that my new iMac has a 1TB HDD, and my old MacBook has a 128GB SSD.
...
- 37
4
votes
7
answers
4k
views
Lifespan of 2011 iMac
I have a 27" 2011 (i7 3.4ghz 24GB RAM) iMac that I just replaced the drives (1 SSD and 1HDD) in 2 years ago. It runs pretty well now, but is just starting to slow down (and pales in comparison to ...
- 325
0
votes
1
answer
948
views
iMac 2019 fans rather loud (and at 2850rpm) when only 30% CPU - is this normal?
Situation:
new iMac
model retina 21.5-inch 2019, 3.2GhZ 6-core intel Core i7
I can not hear fans at all during normal non-cpu intensive operation (web browsing, etc.). They are at 1200 rpm. This is ...
- 1,134
2
votes
0
answers
50
views
Slow file transfer from & between iMacs
I have a problem with slow file transfers from & between 2 iMacs which I'm hoping you can help with.
iMac27 is a 2009 with 12Gb RAM & a 1Tb HDD running High Sierra 10.13.6
iMac24 is a 2007 ...
- 21
1
vote
1
answer
73
views
Erratic cores usage
My machine specs:
iMac (Retina 5K, 27-inch, 2017)
Processor: 3.4 GHz Quad-Core Intel Core i5
Memory: 16 GB 2400 MHz DDR4
Graphics: Radeon Pro 570 4 GB
Very recently I have started ...
- 2,688
3
votes
3
answers
150
views
How can I improve the performance of an older iMac? [duplicate]
I've got an older iMac running macOs Mojave. It is terribly slow and I am interested to see if we can improve the performance. Can you recommend steps to consider to improve the performance?
The ...
- 133
2
votes
1
answer
908
views
Is it safe to leave the iMac turned off for months at a time?
Is it safe to leave your iMac turned off for months at a time? I haven’t used it for a while, and won’t be using it for some time while in lockdown.
Will it be ok performance wise?
Thanks
- 21
0
votes
0
answers
40
views
iMac 21.1 -2012 ( Model 13,1 )
I have problems with my iMac 21.5" -2012 (13.1 model).
The machine is not starting like normal. The fan turns on max from the begining, lasts over 6 minutes and then the system is very slow.
I ...
3
votes
1
answer
3k
views
My 2017 iMac has always been slow, why?
New iMac Specs:
Mid-2017 iMac
Retina 4K 21.5 inch
3.0GHz quad-core Intel i5 CPU
AMD Radeon Pro 555 with 2GB Memory
1TB Hard Drive
8GB RAM
macOS Catalina 10.15.2
It keeps hanging, lagging or ...
- 81
7
votes
6
answers
19k
views
High memory usage on iMac MacOS Catalina
I'm not a Mac power user by any stretch of the imagination, but I'm hoping for some help from someone here that is. There are similar questions being asked, but the answers seem to all be similar... ...
- 71
0
votes
0
answers
321
views
Heavy issues with Finder make iMac unusable
My iMac 2017 (i7 4.2 Ghz, 40 GB RAM, 1 TB SSD) ran very well for around two years. Unfortunately, not anymore: Lately, I have severe issues with the Finder and it – honestly! – drives me insane.
It ...
- 101
2
votes
2
answers
11k
views
What is the typical CPU utilization of idle iMac?
I am new to macOS. I recently purchased a 2019 iMac (Retina 4K, 21.5 inch).
.OMMMMo OS: macOS 10.15.1 19B88 x86_64
OMMM0, Host: iMac19,2
.;...
- 121
0
votes
1
answer
202
views
Unknown Binary in Application Samples
I recently started sampling applications that freeze on my machine. I have an iMac with 8 cores and 32GB of RAM running Catalina 10.15.1 fully patched. It's far from resource constrained yet certain ...
2
votes
1
answer
149
views
Is my HDD throughput normal?
I am a musician, and was finding my 2011 iMac was getting sluggish with more complex tracks. It was topping out the CPU so I bought a second hand 2015 iMac with a much more powerful CPU. I am finding ...
- 173
0
votes
0
answers
527
views
Beachball with app and iMac won't shutdown or restart
My new iMac (July 2019) keeps crashing and I'm in need of assistance:
I've had 7 incidents in two weeks:
Four times when starting Final Cut Pro X I get a forever beachball.
Two times when starting ...
- 1
2
votes
8
answers
25k
views
What are my hardware upgrade options for a late 2009 iMac?
It is now July 2019 and I have this Late-2009 iMac.
macOS High Sierra Version 10.13.6 iMac (27-inch, Late 2009) Processor: 3.06 GHz Intel Core 2 Duo Memory: 4 GB 1067 MHz DDR3 Graphics: ATI Radeon HD ...
- 900
3
votes
2
answers
488
views
Is it preferable to buy two 8GB or one 16GB for iMac 27" 2017 memory upgrade?
I have 16GB of RAM installed on my iMac 27" 5K i7 2017 (2 x 8GB).
There are 4 slots in total and I would like to add another 16GB.
I don't know if it's best to buy 2 x 8GB or 1 x 16GB?
- 670
0
votes
1
answer
371
views
Which model has better CPU-performance: iMac MMQA2HN/A or Mac mini MRTR2HN/A?
In this comparison the main difference I see is in the processors.
https://www.apple.com/in/mac/compare/results/?product1=imac-21&product2=mac-mini
Irrespective of other feature differences this ...
- 103
1
vote
0
answers
459
views
iMac hard freezes intermittently after booting off an external SSD
I have hooked up an external USB3 Samsung T5 SSD to my iMac model iMac14,2, formatted it as APFS, and installed macOS High Sierra on it, to use as my primary system drive.
I can use the system for a ...
- 111
5
votes
1
answer
431
views
Mac refusing to shut down because of finder?
When I shut down, restart, or update and restart my mac goes about shutting applications down to get ready to turn the computer off as it normally does but after my top bar and desktop icons have gone ...
- 51
3
votes
1
answer
142
views
Is a 2008/9 Mac Pro cluster a viable option to a 2018 iMac?
So I can decide whether to use a small cluster of older Mac Pros or a single modern iMac assume I have a problem which will execute adequately in G gigabytes of RAM, and that the problem can use ...
- 133
4
votes
1
answer
926
views
Which OS should I downgrade to?
I recently bought a 2nd-hand iMac which has the following specifications:
iMac (27-inch, Mid 2011)
Processor: 3.4 GHz Intel Core i7
Memory: 16 GB 1067 MHz DDR3
Graphics: AMD Radeon HD 6970M 2048 MB
...
user296811
1
vote
2
answers
2k
views
Why my 2009 macbook pro is faster than my 2017 retina iMac?
A couple of years ago I bought a used macbook pro from a friend of mine, I knew it was a good deal cause the mbp was modified and had very good response and performance, the specs of this mbp are the ...
- 590
3
votes
1
answer
1k
views
Protecting iMacs from high humidity
I am moving to Costa Rica and want to take both of my iMacs. Humidity and salt air are a problem. Will leaving the iMac running help to keep humidity out of the unit? I see only one vent; maybe a ...
- 31
0
votes
0
answers
155
views
Underclock retina iMac [duplicate]
My iMac is wonderfully performant, but under extended load it sounds like a hive of angry bees.
I am using Turbo Boost Switcher to avoid using up all the CPU headroom, but for multithreaded ...
- 263
1
vote
3
answers
616
views
How to speed up my iMac after upgrading to Sierra?
I have this:
iMac (21.5-inch, Late 2012)
2,7 GHz Intel Core i5
16 GB 1600 MHz DDR3
NVIDIA GeForce GT 640M 512 MB
Some days ago I updated to Sierra 10.12.6, and all my apps. My HD currently have ...
- 269
2
votes
2
answers
1k
views
Google Chrome crashes with EXC_BAD_INSTRUCTION on Sierra
New iMac running Sierra 10.12.5. 3 days ago suddenly started freezing intermittently for 3-5 minutes at a time. Activity Monitor was showing CPU spikes that corresponded to the freezes. Console ...
- 33
2
votes
1
answer
6k
views
27‑inch iMac 2017 i5 vs. i7 [closed]
I own a bit old MacBook Pro (Retina, 15-inch, Mid 2014) with 2,2 GHz Intel Core i7, so I'm considering replacing it with a new iMac, but not sure which CPU should I choose.
3.8GHz quad-core Intel ...
- 121
2
votes
3
answers
672
views
Upgrading RAM in Late Model 2009 iMac
Is it worth upgrading an iMac late 2009 model to max RAM at 16gb for video editing/exporting? Currently to export a 3gb video file in Final Cut Pro it takes 1 - 1.5 hours to export the file. Is it ...
