My main gaming rig rarely goes to power saving mode, its only used in the evening and when its on I’m playing on it. Now the documents say that zero core is only used when the pc is in a monitor off state. Seeing as that is when the pc isn't being used wouldn't people using more aggressive power saving like standby be better over all? In my HTPC which is used daily from 8am-11pm this is again rarely in monitor off mode, it either has tv on, or music or my wife is reading the internet etc. I can understand lower idle usage as the HTPC is regularly idle or just showing video, but is zero core that useful? I could see it being of more use for mobile devices like laptops.