According to the 80plus.org website, there's no certification for this PSU at all.
http://www.plugloadsolutions.com/80PlusPowerSuppliesDetail.aspx?id=53&type=2
Any claim by Azerty in regard to its 80-plus rating is bogus without a certified unit on file with 80-Plus.org. Azerty's advertisement is blatantly false. It should remove that claim, and either state the specs supplied by the manufacturer, or test a unit independently and claim that the unit tested within the specs required for whatever 80-Plus rating for which it might qualify. Claiming the unit is 80-Plus Silver is, quite simply, a lie and false advertisement.
Nexus doesn't claim any 80-Plus certification because it's not certified. There's no mention of an 80-Plus rating at all on its website, but there is a link at the bottom of the unit's description that states "Bronze Certified."
http://nexustek.us/psu/nx-6000-r3
It's interesting to see a usually quality name mixed up in this kind of false advertising. mess...