21" imac is topped out @ 6 GB ram, but seems logical to add 2 to have slots balanced.
apple says i already have too much ram. tech person seemed to suggest adding 2 more, but then backed off.
imac runs ok, but lots of quirks even with a fresh clean install
6GB is above the supported amount of RAM, but is reported to work. Larger amounts don't work. Personally I would stick with 4GB (even Crucial say that is the maximum) especially if I was having "lots of quirks"; that's not what I would call "running OK". 4GB should be plenty for a Mac in normal use. I have more in my Mac Mini, but only because I use it as a server and run a couple of VMs on it.
i used to have 4 GB ram & it ran horribly, After adding 2 GB usage improved remarkably. Ran very well but quirks have gradually increased with some remaining after a clean install. So i'm not so sure about this advice. i was interested in s/o with experience as an experienced tech suggested he'd try more. I thought I'd see if anyone here might have experience with 8 GB. i guess not... Thanks anyway
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