I have a G2 850 myself, and yes they're from Superflower. Rock solid PSUs. Those EVO coolers actually aren't anything to sneeze at, they manage to fit in smaller cases (Noctua D15 does not) and at a fraction of the price. Actually easier to mount different fans on these than some after market coolers I've dealt with as well (I love BeQuiet stuff, but their fan mounting solution for the Dark Rock Pro is pita).