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Cox Orange

macrumors 68000
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Jan 1, 2010
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Is heat a problem with the Crucial mx500 in a Mac Mini?
It tends to run 10°C hotter than e.g. a 870 evo (according to Windows Desktop users)

I had already decided to go for a Crucial mx500 over a Samsung 870 Evo, because of the bad batch sold until mid 2021 that got bad sectors and read errors over time and earlier problems in Samsung's history with the 840 Evo or other issues where people had to update the firmware to solve the problems. At least there was a firmware update, but the process is quiet complicated for mac users, involving having a windows machine. Or the incompatibility with the Mac Pro (but this seems to be a different beast anyway. We already know this SSD/HDD pickiness from the PowerMac G5 days).
That doesn't mean that Samsungs are bad. I think every major SSD manufacturer had their problems, Crucial had them e.g. with the m4, too - and who knows, some problems with a current model or batch will only show up after some years of use.
Samsung seems to have the better or more recent hardware components and technology built in their SSDs, if I am correct, which was my reason to buy an 870 evo initially.
But than after some reading, I got the impression a Crucial mx500 will be ok, cheaper - and most important - work out of the box in a Mac (e.g. without firmware flashing).

A WD Blue 3D or SanDisk Ultra 3D which are identical, fell out of my consideration after I read that they have a certain problem that files that haven't been accessed for a longer time are read very slow under 10MB/s. The problem occurs with very few exemplars and there is a cure against it, but I didn't want to gamble.

So, i was all fine with myself and my decision for an mx500 and only had to decide whether 500GB or 1TB.
Now, though, I read that mx500 tend to run 10°C hotter than 870 evos (at least in Windows machines).

This wouldn't be a problem, if the manufacturer says this is ok and maybe thermal throttling or other measures save the drives from overheating in densly packed computers. BUT! I fear that it will make the Minis fans blow earlier or heat up the HDD that is in there, too. (If I decide to keep the HDD inside as a second drive. I am not sure, though.).

I also thought about using it in an external case.

Thank you for all opinions, insights and advice to be given!
 

arw

macrumors 65816
Aug 31, 2010
1,144
902
I use an MX500 in a 2011 Mac mini.
The SSD generates way less heat than the original HDD.
With one MX500 alone, it peaked at 95°F/35°C in normal operation.
Even with an HDD+SSD setup, it is always the CPU/GPU load that is responsible for increased fan speed.
I also did not experience unhealthy HDD temps due to the additional SSD.
Just to be safe, you can monitor the temps with an app like iStat menus.

EDIT: For large video projects or longer continuous write operations it might get warmer, but I can't remember reaching more than 108°F/42°C for any of my several MX500 (wherever installed).
As you mentioned Windows, attached the maximum temperatures of my main Win10 server system SATA MX500. Mounted behind the motherboard. No active/passive cooling. Hosting/indexing several terabytes of HDDs via AFP/Plex. Writing 40 GB daily - reading multiple times that. Ambient ~72°F/22°C.
 

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Cox Orange

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That's quiet interesting my original HDD (5400rpm drive) gets about 30-35°C, I read the mx500 gets 45-60°C.
 

DeltaMac

macrumors G5
Jul 30, 2003
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I have MX500 in both slots on my 2012 mini. It is my primary home system, running on latest Ventura beta. Both SSDs run at about 100F/40C. Doing some random web browsing at the moment, and cranked up fan for a couple of minutes, and the SSDs both are reading about 28C. I very seldom see over 40C on the drives, regardless of what I do. The over-all temps have gone down since I repasted the CPU heatsink, same time that I installed both MX500, about 2 months back. I have used this same mini for about 10 years, and the highest heat came from the original HDD, often over 60C. The 2 MX500 never come close to those temps, in my experience.
 
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Cox Orange

macrumors 68000
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Jan 1, 2010
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highest heat came from the original HDD, often over 60C
Did you have a 7200rpm drive in it? My original internal drive is a Hitachi or Toshiba 5400rpm drive and the highest I got was 44°C during Installation of Catalina to an external HDD. (Northwestern/ middle european region end of march).

Kinda off topic: I was surprised how responsive and fluent Catalina runs on a 2013 WD Velociraptor 600hlhx (had had only 90 hours of use according to SMART, was my video cutting drive once). I thought this was impossible without a SSD. Lets me kind of overthink buying an SSD. At least I won't hear the SSD, when it is writing data to it.
 
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DeltaMac

macrumors G5
Jul 30, 2003
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Did you hear the fans then?
Only one fan in a mini, and that fan is a maglev design (no mechanical bearings), so there's not much to hear, other than more air moving. Not totally silent, but no mechanical noise.
Did you have a 7200rpm drive in it? My original internal drive is a Hitachi or Toshiba 5400rpm drive and the highest I got was 44°C during Installation of Catalina to an external HDD. (Northwestern/ middle european region end of march).
...
I never ran with single drives in the mini - only dual drives. Those do run hotter than single drives. Highest drive temp that I ever noticed with HDD, about 75C. I tend to adjust fan speed manually, just to keep ahead of the heat. In my experience, 2.5" SSDs never get near that high.

10,000 RPM velociraptor that runs macOS comfortably? I'm not too surprised. I can't test one inside a mini :D
Closest I have to that is a 2.5" WD black 160GB that I use for macOS installers. Still works pretty good for that.
 

Cox Orange

macrumors 68000
Original poster
Jan 1, 2010
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I should add that I had it in an external case. :) I think the Velociraptor wouldn't even fit in the Mini without the heatsink.
 

DeltaMac

macrumors G5
Jul 30, 2003
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No, there's only space for 2.5-inch (laptop) drives in the mini.
absolutely can't take a 3.5 like the Veloci...(even without the heatsink)
 

loby

macrumors 68000
Jul 1, 2010
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Did not see an overheating issue with the MX500. Have one in my MacMini 2009 and one in MacMini 2012.

These computers are not on all the time anymore, but like someone mentioned in an earlier post, replacing the thermal paste on the CPU heat sink is needed now since MacMini 2012 is about 11-12 years old now (of course MacMini 2009 too - this one is more work to do).

I noticed drastic changes in heat issues once I replaced the thermal paste on both units.
 

Cox Orange

macrumors 68000
Original poster
Jan 1, 2010
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Thanks for the answers!

Sorry for the simple question, but which thermal paste did you guys use? I know Arctic silver mx4 was popular once ago?
 

DeltaMac

macrumors G5
Jul 30, 2003
13,615
4,498
Delaware
Bought some more AS MX-4 just a few months ago. I like it. It continues to work.
I think AS now has the "new & improved" new versions, but the old continues to be sold, and I like to use what I know.
 
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