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AaronFisher

macrumors member
Original poster
May 3, 2015
72
33
England
I've recently noticed that the VRAM usage on my late 2013 iMac seems to be hovering between 75% and 100%, even after restarting the machine (with nothing open). I've even tried fresh installs of both High Sierra and Sierra and it still seems be the same. On my MacBook Air (with shared graphics memory) the usage is < 10% at idle.

Is this normal (I.e. a normal difference between dedicated and shared graphics memory)? Does anyone else see the same thing?

The dips in the graph attached correlate with when the machine is asleep with Power Nap enabled.
 

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