10.6.5 Weirdness - Missing RAM!

[Michael73]

Seriously! This is the most bizarre thing...

I downloaded 10.6.5 this evening for my MP - the download and install went flawlessly. After it was all done and the machine restarted, I clicked on "About this Mac" and that's when I noticed it said "Memory: 11 GB" I was like HUH!!!

The machine shipped with 4 x 1GB DIMMS and then I bought 4 x 2GB DIMMS from OWC. When I clicked on "More Info..." and it brought up the System Profiler it says I have still have my 4 x 2GB DIMMS, but now it says I have 2 x 1GB DIMMS and 2 x 512MB DIMMS.

What the heck is going on?

 

[darkpaw]

I have the same problem on my Mac Pro 3,1. I have a couple of answers from helpful people on the Apple discussions here: http://discussions.info.apple.com/thread.jspa?threadID=2644529&tstart=0.

 

[loungecorps]

Very strange, my ram all showed up the same as before. I bought kingston value ram from newegg. Hope you get that figured out

 

[diazj3]

Also having some weird RAM behavior...

In my 2009 Quad MP case, while the amount of RAM is correctly reported (7GB), I noticed 10.6.5 manages it differently - or so it seems. According to activity monitor, I see a bit more free memory (green) in general apps; used memory (yellow) seems to clear out much faster after apps are closed - both good things... but the wired memory (red) seems also to be much larger while performing particular RAM intensive apps.

I don't know if I should consider this a more efficient RAM management under 10.6.5, or a glitch. Can anyone comment on this?

cheers!