All Questions
18 questions
0
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0
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30
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My 2008 iMac CPU Fan runs at full speed
My 2008 iMac CPU fan runs at full speed. I tried to control the speed via Mac Fan Control app but no luck, I can control the other fans perfectly.
Short context:
The iMac belonged to my father, he had ...
- 1
0
votes
2
answers
535
views
Should I upgrade my Intel E7600 CPU for an E8600 in my iMac 27" late 2009?
It all begun when my factory Seagate Barracuda started clicking. I knew the end was nigh for my beloved iMac 27" 10,1. I then watched some tutorials, did some research and realised I could do ...
- 21
0
votes
0
answers
27
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How to slow down iMac CPU for quiet operation [duplicate]
With the help of Turbo Boost Switcher Pro, I could always keep my iMac 2020 with its 8-core i7 fanless for 99% of the time without any noticeable slowdown on daily work.
Until now. However, now it ...
- 141
1
vote
0
answers
260
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
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
0
votes
1
answer
1k
views
Retina iMac not powering up after upgrades, one diagnostic LED
I did a few upgrades to a 2017 iMac, and unfortunately, upon reassembly, it isn't powering on. Here's a photo of it, display disconnected. In the second photo I've labelled things for reference.
...
- 258
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
5
votes
4
answers
41k
views
Is it normal for a 27" iMac to have CPU core temperatures around 95C under 100% CPU load?
I have a 2017 27" iMac with a 4.2 GHz Intel Core i7. It's been having some issues lately where every now and then the entire system will gradually freeze, forcing me to hard reboot the computer. So to ...
- 2,760
1
vote
1
answer
772
views
Replaced CPU with i7, now 1 LED blinking
I replaced the Core i5 2.7 GHz CPU in my iMac 27-inch (mid 2011) my with an i7 2600.
On boot I got a blinking single LED on LED1. Reading up that normally means insufficient power. The main fan would ...
- 121
5
votes
1
answer
6k
views
iMac 27" 14,2 late 2013 CPU upgrade
I recently brought an iMac 27" 14,2 back to life after a CPU fault (which in itself was odd since I never seen a PC or Mac with a fried Intel CPU) and it runs pretty nice ... but on a Intel Core i3 ...
- 2,326
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
9
votes
2
answers
6k
views
CPU stuck at 0.8Ghz on iMac late 2013 2.7Ghz because of kernel_task
I know it seems like this question is like the dozens of other questions about CPU overheating and kernel_task overloading it, but nope.
I found an iMac (yep, found it. In the trash). I fixed it (...
- 111
2
votes
2
answers
3k
views
CPU throttled to 0.8GHz due to "GPU LIMIT PROCHOT"
Suddenly my iMac (late 2013) started to throttle CPU to 0.80GHz, everything becomes super sluggish. It happens ~5-10 min after a fresh reboot, sometimes it goes back to full speed for short periods, ...
- 21
3
votes
1
answer
14k
views
Yet Another "Will This CPU Work?" - Mid 2011 iMac 27" Upgrade
The system I started with:
Mid 2011 iMac 27"
| Memory | 8GB 1333MHz DDR3 |
| HDD | 2.7GHz 1TB (7200 rpm) |
| Graphics | 2.7GHz AMD Radeon HD 6770M 512MB |
| ...
- 203
14
votes
1
answer
13k
views
How do I disable/configure macOS Sierra's auto throttling of the CPU for processor intensive tasks
I'm using an iMac (late 2015) with an Intel core i7 (quad core) 4GHz CPU with 32GB ram and a 3TB Fusion Drive. I'm a software developer working on a huge codebase that used to take about 30 minutes to ...
- 143
1
vote
1
answer
2k
views
cpu is 100% used, yet no application shows significant usage
Since a few days my IMac started showing weird behaviour.
In Activity Monitor it shows that my CPU is 100% used. Literally 0% idle, but there are no Applications using anywhere near this much ...
0
votes
4
answers
888
views
Complete Specs for Mid-2010 iMac & Early-2011 MacBook Pro?
OK, so here I am. I've searched anywhere I could but definitely couldn't find what I was looking for.
I'm thinking of performing some sort of upgrade (e.g. SSD or memory or CPU) and I'm trying to ...
- 408
0
votes
1
answer
2k
views
GPU temperature is above 70 C, and CPU fan is above 2400 rpm
I've had my iMac for two years now. I play a lot of games and watch a lot of HD videos. In the past week, the computer has gotten a lot hotter than usual and it stutters a lot, and I feel like the two ...
- 4,351