We first reviewed a HX series back in November 2006, oh how time has flown by. Back then they ever had a red sticker design, who can remember these? All that time ago a 620W PSU cost £96 and only just scraped by with 83% efficiency! In June 2009 we reviewed the original HX850 and it was so good it won our "Best in Class" for 850W to 1000W units. Corsair have just released a revamped V2 version of the HX850 with a new efficiency rating and some interesting new features. Its time to break out the Sun Moon tester and hot box to see how the new one stacks up against the competition on the market today. Lets just hope I don't wake the kids up.....!