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10900K iMac Crashes Frequently

Paulogic

Active Member
Ram is crucial for Mac's, they use Kingston but charge way to much for memory expansions.
So buy the same type of Kingston memory and run without any trouble.
At least that is what I've done with all my Mac's (iMac, Mini,...) and also do for the iMacs
of my customers. Haven't had a RAM issue in decades. (Really, no joking or bragging).
But this applies to Windows machines also : Kingston is a proven quality label for RAM,
and I'm glad I always use or advise to use this brand. Keeps me and my clients happy...
 

Symfoniq

Senior Member
Ram is crucial for Mac's, they use Kingston but charge way to much for memory expansions.
So buy the same type of Kingston memory and run without any trouble.
At least that is what I've done with all my Mac's (iMac, Mini,...) and also do for the iMacs
of my customers. Haven't had a RAM issue in decades. (Really, no joking or bragging).
But this applies to Windows machines also : Kingston is a proven quality label for RAM,
and I'm glad I always use or advise to use this brand. Keeps me and my clients happy...
Kingston sells good RAM, but Apple does not source their memory from Kingston.
 

ka00

Senior Member
Just an update after installing my third set of 128GB RAM from OWC (have done two full replacements): was able to create a kernel panic within five minutes of running Studio One. I’m beyond fed up.
 

rnb_2

Rick Baumhauer
Just an update after installing my third set of 128GB RAM from OWC (have done two full replacements): was able to create a kernel panic within five minutes of running Studio One. I’m beyond fed up.
Well, I think that makes you eligible for a refund from OWC. Crazy situation though - I haven't heard of anything like this with earlier models, so I don't know if it's something different in the iMac or the RAM supplier (the latter seems more likely).
 

ka00

Senior Member
Well, I think that makes you eligible for a refund from OWC. Crazy situation though - I haven't heard of anything like this with earlier models, so I don't know if it's something different in the iMac or the RAM supplier (the latter seems more likely).
Thanks, OWC did agree to give me a refund and I’ve now shipped back their RAM and instead have ordered from Crucial. Hopefully this will sort me out. I assume at this point that it’s a design defect in the RAM that affects proper compatibility when all slots are fully loaded, rather than bad luck with three separate sets of RAM.

I had bought from Crucial for my previous iMac and had no issues with their RAM.
 

IFM

Senior Member
Thanks, OWC did agree to give me a refund and I’ve now shipped back their RAM and instead have ordered from Crucial. Hopefully this will sort me out. I assume at this point that it’s a design defect in the RAM that affects proper compatibility when all slots are fully loaded, rather than bad luck with three separate sets of RAM.

I had bought from Crucial for my previous iMac and had no issues with their RAM.
Ya I have a set of RAM from them fail in the first 3 months. 2nd set I ignored the instructions for using the factory rubber piece that separates the chips thinking they were just overheating. Been fine ever since. I have a set of 16gb chips though that had better heat sinks I might downgrade too since the machine is only now going to get used for Waves LV1.
 

Ukena

New Member
I spent almost 20 years as an independent Macintosh support person, with over 1,000 private and corporate clients. I have seen firsthand what can go wrong with any number of "foolproof" redundant backup systems (unfortunately, including one that I recommended and set up myself – fortunately, I lucked into discovering a recovery protocol. As my tech partner often said, better to be lucky than smart).

I would never use TimeMachine as my only backup, nor even my most important backup. I have a MacMini 2020 with 1TB internal (the system & apps, all the most important files, and stuff I'm working on currently) with >200GB free; a 3TB external (my huge iTunes library, my photo library, my Final Cut libraries (except the current one), and all archives) with 420GB free; and a 1TB external for samples with 150GB free.

I have two clones of both my internal and 3TB external at home, and another of each offsite (I use both Carbon Copy Cloner and SuperDuper! for backup, although I tend to use CCC more). The Samples disk currently only has one backup (I use the backup with my M1 laptop, along with a portable 2TB drive with most of the 3TB data on it), but it will also get a third backup soon.

I have a 4TB external drive that has my TimeMachine backup on it. It goes back to Dec. 2020, when I bought the Mini. I start TM over again for a new machine. What it is invaluable for: recovering files I have accidentally deleted, or files I changed without making a duplicate (sometimes months later). I have also, on occasion, populated a clean installation with data from a TM backup, because sometimes Migration Assistant uses TM faster than a bootable clone. I have not had a corruption of a TM disk for several years.

Kernel panics and freezes, in these days of modern times, can often be caused by third party kernels and extensions that have perpetuated themselves in the system through many updates. These pesky things are hard to find, and really the only way to find out if that's the problem is to see how the machine acts with a clean new system with nothing restored from the previous system, adding your necessary-for-work Apps one at a time. It is much harder to troubleshoot these things now, since it's almost impossible to boot a Mac from an external drive (and worse on an M1 Mac), and nobody hates erasing the internal drive and reinstalling a system more than I do. But sometimes that's the only way to tell if it's hardware or software.
 

synthnut1

Active Member
I’m only running 64gb of ram in my iMac and knock on wood it’s running ok...I have been thinking about maxing it out to 128gb, but now skeptical...Makes me wish that I built a new PC instead....Mac’s just aren’t what they use to be ...
 

ka00

Senior Member
Another update. Three days with Crucial RAM instead of OWC. So far, zero issues, even after running torture tests. That was eight months of computer hell (kernel panics, diagnosing, speculating, testing, on the phone with apple, emails to OWC, multiple returns, multiple UPS drop offs, etc.) I won't soon forget.
 
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Jeremy Gillam

Jeremy Gillam

Senior Member
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Glad you got some improvement ka00. I got my first panic in a month or so the other day with OWC RAM. If it happens again I'm going to send it back. Ugh.
 

ka00

Senior Member
Glad you got some improvement ka00. I got my first panic in a month or so the other day with OWC RAM. If it happens again I'm going to send it back. Ugh.
Sorry to hear that, Jeremy. It's very annoying to have to deal with. I don't recall, did you also notice that there are no panics if you only install three DIMMs instead of all four? I mentioned that multiple times to OWC and they never indicated that was a known issue for them. If they know it's an issue, they didn't admit it to me.
 
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Jeremy Gillam

Jeremy Gillam

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Sorry to hear that, Jeremy. It's very annoying to have to deal with. I don't recall, did you also notice that there are no panics if you only install three DIMMs instead of all four? I mentioned that multiple times to OWC and they never indicated that was a known issue for them. If they know it's an issue, they didn't admit it to me.
I’ve sort of avoided testing that in depth. At one point I was having trouble getting it to boot and went down to 2 sticks but pretty quickly went back to 4. If it persists I might try with 3.
 
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