Windows 8 using 86% of ram - 16Gbs ram

Werzal13252

Reputable
Apr 8, 2015
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I have a decent gaming rig.

Intel core i7 4790k@ 4.0ghz
ASrock Fatal1ty Z97 Killer
16Gbs hyperx ram @1600mhz
Gtx 660 oc edition

What I want to know is why windows 8.1 pro is using 80% of my ram on idle. . . .

here is a screenshot of my percentage usages.
http://puu.sh/h63qy/e0e0ec1f2e.png.

I really do not understand what windows 8 is up to

I rough estimate all the Memory tab in the "Processes" in task manager and they only add up to like 500mb of ram, if that.