Caporegime
I don't want to derail the thread to much but basically in several games (watchdogs, AC4 and sometimes BF4) alt+tab from fullscreen mode will just BSOD my pc.
i made a thread on tomshardware with more info the other week and got no where (14.7 at the time) (http://www.tomshardware.co.uk/answers/id-2309748/blue-screen-crash-1000007e.html)
Also did a bench on the HK profile you suggested and hit 181 average (editing the image in my last post)
Good idea. Send me a trust message about this and we'll pick it up there to save derailing this thread.