I have 2 l3+, set with hiveos at 504mh/s they absorb 660w, at the socket they will be 10% more or so.
Fans with ambient temperatures between 15 and 20 degrees c are always between 30 and 50%, rarely more.
Same here. I have 2 L3++, both mining in my apartment and they don't do so much noise.
It is same same as with the R4s I have. If you use a bitmain PSU, the PSU is louder than the ASIC