I run the i5 mentioned in the initial post with 4gb ram. 24/7 plex with 2-3 streams simultaneously, 2 of them transcoding full HD stuff. Besides 6 cams recording permanently, timemachine and Windows backups running frequently. Only problem was the crappy Realtek driver which caused lockups with too many connections, but since the last xpenoboot version that's history and the machine works like a charm.
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