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Snoosedaddy

macrumors regular
Original poster
Apr 3, 2011
173
11
Colorado Springs
Have late 2012 27" iMac. When I ordered, I only thought I would need 16GB of RAM for photo editing. I pulled up activity monitor when running Aperture and iphoto together and was nearing 12GB used with only the programs open, haven't even started editing yet. I think I will order 16GB more. Anyone else see this?
 
Have late 2012 27" iMac. When I ordered, I only thought I would need 16GB of RAM for photo editing. I pulled up activity monitor when running Aperture and iphoto together and was nearing 12GB used with only the programs open, haven't even started editing yet. I think I will order 16GB more. Anyone else see this?
OS X and many apps will use whatever RAM is available. That doesn't mean you're running out of RAM. To determine if you can benefit from more RAM, launch Activity Monitor and click the System Memory tab at the bottom to check your page outs. Page outs are cumulative since your last restart, so the best way to check is to restart your computer and track page outs under your normal workload (the apps, browser pages and documents you normally would have open). If your page outs are significant (say 1GB or more) under normal use, you may benefit from more RAM. If your page outs are zero or very low during normal use, you probably won't see any performance improvement from adding RAM.

Using Activity Monitor to read System Memory and determine how much RAM is being used
 
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