Niels, the PSU in this build actually does operate most efficiently in the 40%-60% load region according to its specs; it wasn't just a rule-of-thumb. Also, th

Niels, the PSU in this build actually does operate most efficiently in the 40%-60% load region according to its specs; it wasn't just a rule-of-thumb. Also, the lower you load it, the easier it gets to cool, according to its own specs. Which I take as a nice bonus.