I've got a weird problem after installing a Western Digital Blue SSD in my Mac mini (2012). The installation was a breeze. It took me about 15 minutes total. The worst part was lining up the two pegs in the holes towards the back where you can't see. I used two pieces of scotch tape and that did the trick.
I formatted the brand new SSD with APFS, then I preceded to install Mojave. After the installation and when I got to the desktop I noticed the Mini was hot. Why? That's the part I don't understand. I thought maybe the fan was not connected, but I remember setting it aside and not disconnecting the cable to the motherboard.
So I installed Macs Fan Control and ran the fan up to 5000rpm. I could hear the fan so it definitely was connected and it was blowing hot air out the back. The temps were 65c at the desktop on a brand new install.
So I checked Activity Monitor and there was the problem. Instead of the CPU idling at 1-2%. It was running at 25%. So I started looking for the offending task (brand new install) and Spotlight, Finder and a host of others were running much higher than when I had the stock 5400 RPM drive in place.
So after my background info. Is it possible that it's indexing the SSD and that's what is causing the CPU to spike or is TRIM doing some behind the scenes work? It does drop back down after awhile but pops back up.
But I must say what a drastic difference from a stock 5400 RPM to an internal SSD. To put it in perspective here are the boot times from a power on times when pressing the power on button to the desktop.
Mojave 5400RPM = 1 min and 12 secs (stopwatch)
Mojave SSD = 18.5 secs (stopwatch)
I formatted the brand new SSD with APFS, then I preceded to install Mojave. After the installation and when I got to the desktop I noticed the Mini was hot. Why? That's the part I don't understand. I thought maybe the fan was not connected, but I remember setting it aside and not disconnecting the cable to the motherboard.
So I installed Macs Fan Control and ran the fan up to 5000rpm. I could hear the fan so it definitely was connected and it was blowing hot air out the back. The temps were 65c at the desktop on a brand new install.
So I checked Activity Monitor and there was the problem. Instead of the CPU idling at 1-2%. It was running at 25%. So I started looking for the offending task (brand new install) and Spotlight, Finder and a host of others were running much higher than when I had the stock 5400 RPM drive in place.
So after my background info. Is it possible that it's indexing the SSD and that's what is causing the CPU to spike or is TRIM doing some behind the scenes work? It does drop back down after awhile but pops back up.
But I must say what a drastic difference from a stock 5400 RPM to an internal SSD. To put it in perspective here are the boot times from a power on times when pressing the power on button to the desktop.
Mojave 5400RPM = 1 min and 12 secs (stopwatch)
Mojave SSD = 18.5 secs (stopwatch)
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