I spotted a much cheaper 80+ gold PSU in the ebuyer xmas sales, and decided to look up some reviews. I found a review on anandtech which I must have somehow missed in the past. In light of this discovery, I’ve updated my previous articles about PSU efficiency to include the HuntKey Jumper 300G (aka R90). The price of this PSU changes the conclusions of 2 of the 4 scenarios I’ve previously detailed, and I have in fact ordered one at the discount price of £20, for use in my current server! After taking into account that my current server PSU (an Enermax NoiseTaker 475 from 2004) is approximately 80% efficient rather than the 70% worst case I use in the articles, I’m hoping to net savings of around £20 per year.