NOW APPLE SAYS that they have had service tickets involving 3rd party ram issues, but their engineers won't even look at a computer if the ram issue is from a 3rd party. I have also done other things, too numerous to mention, but these are the major steps I have taken. The last one today to tell them how replacing ram only eliminated freezing (so far, anyway), but now it either restarts or is completely shut down and hard to restart every morning. I have had 3 separate phone conferences with apple phone techs about these issues (established a service ticket). Now, I have not had any more freezes, but all the other restart issues have returned.
#OWC MAC MEMORY INSTALL MAC OS#
Here's some of what I have down so far: 1) eliminated a lot of old files and software, 3) virus scans, several times (malwarbytes, recommended to me by apple, found 4 small viruses, but nothing since in the last few weeks), 4) did a complete reinstall of mac OS X, 5) removed OWC ram, and used the apple ram for a few days (this seemed to work, but of course everything was a bit slower), 6) contacted OWC and got my ram replaced, as defective, and 7) installed the 128g of replacement ram from OWC. Sometimes I get the "your computer was shutdown because of a problem" notice, sometimes not. Since then I have been plagued with random freezes, shut-downs, and restarts.
I did this before I even set up my new iMac. I replaced the minimum Apple ram with the recommended OWC 128g ram (32X4). I got the new 27" iMac and maxed it out, except for ram and SSD (went for 2T, so still pretty max). That is all well and good, but here is my similar, but different problem.
You can always start with the 32GB and then get two more sticks from OWC also sized 16GB in the future if you want to add more. (And I’m not even sure that it would work, presumably Apple is installing in paired configurations for their BTO options). I suppose if you bought 32GB of RAM from Apple it might work, but considering how much Apple charges for its RAM that’s a bad idea.
It is unfortunate but that’s just the way it is.
#OWC MAC MEMORY INSTALL FULL#
If you want to run RAM at full capacity and in dual channel you need identically branded RAM and ideally, identically sized RAM. The RAM will run at full speed but only in single channel, which will have a negative performance impact.
#OWC MAC MEMORY INSTALL INSTALL#
Install the RAM in alternating pairs (so Apple RAM in slots 1 and 2, OWC slots 3 and 4.Install it in addition to the OWC RAM and have 40GB running at a slower clock speed but still in dual channel (so Apple RAM would remain in the slots it is in and you’d put the new RAM in the two open slots).If you want to use the 8GB of Apple RAM you have two choices: For whatever reason, the RAM is really sensitive this year. OWC is correct and Apple’s own documentation now states this too.