Memory upgrade suggestions/comparisons. Help please.

Before you spend money on additional RAM you should determine why your Mac (is it a MacBook or iMac?) is freezing.

To aid in doing so please download and run Etrecheck.  The free version is sufficient. It is strictly a diagnostic app and does not involve any personal data.

Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.

Copy the report

and after clicking on the Reply button use the Additional Text button to paste the report in your reply.

Then we can examine the report and see if we can determine the cause of the problem.

if the RAM is original to the machine (even the minimal available) -- it should not cause the machine to lock up, freeze, crash -- slow and spinning color wheel pauses, yes, but not kill the mac

i would be looking more at drive health as the machine accesses an overworked failing HDD or SSD as it reads/writes stuff it could using RAM for

i am skeptical simply adding more RAM will solve the lock up -- it could take a load off a failing drive tho -- i do recommend adding as much ram as you can afford (and not obsess too much about it)

check out DriveDX macOS app tryout to get your drive health ruled out and in order...

PS: you can buy OWC ram off AMAZON (i do for a couple reasons) tho it may still ship by OWC -- it comes faster with free shipping and no-hassle return off amz

1) That 2019 iMac is very picky and buying RAM from Amazon or E-Bay is a very bad idea.

2) That iMac has 4 slots and you can add 2 compatible 8GB or 16GB Ram modules to the existing 8GB.

What I would recommended is buying the 16GB (8GBx2) RAM kit from OWC and run with 24GB.

https://eshop.macsales.com/shop/memory/imac-2019-27-inch

I couldn’t follow all that

i stick to macsales-com OWC or original used OEM Apple ram

this post is why

Bumping the RAM up isn't a bad idea for OS compatibility, it may not be what is needed to keep the Mac from "frequently locking up". There may be some other underlying issue in software. You'll know more after you upgrae your Mac's memory.

BioChi7 wrote:

I figured it out and took action. No need to respond here.

FYI, It is polite & proper etiquette to follow up with what solved your problem. You ask for assistance from the community so you should provide back to the community with the solution which worked for you. This will help others who read your thread as well as helping the contributors who assisted you to improve their responses to others on this forum.