As long as it's not crap, 400w is just fine for the 1060. But the 460 rating, in and of itself, is almost a dead giveaway as to who makes it... everyone else seems to be fixated on x50 and x00 sizes
I bet if you go to pcpartpicker and set the range finder to 460/460, I bet only one name comes up
You can proably find a few oddballs no longer in production and some of the mass market types or the fpolks who supply them offering 460s like HP and maybe Dell. No doubt there's a few out there from brands few ever heard of, but not on reputable sites. If it is an off brand, no I wouldn't put it in a new PC, but the question here isn't that. If it didn't blow up anything at 230 watts, it's not gonna blow up at 120
Likely almost as true with the 520 / 620 ... they gonna be almost exclusively Seasonic or Antecs built by Seasonic and maybe other brands who are no longer stocked, To many, that 460 that Seasonic made for them is likely sold as a 500 watter ... the 520/620s that Seasonic OEMS could pass testing as 550s and 650s. The XFX Core Edition 550 for example, was built on the same platform (GB Bronze) as the Seasonic 520.