These are but to be quiet! TFX Power 2 Gold. The manufacturer is not Listan & Co, which is a mistake!
I bought because of good efficiency, the TFX Power 2 Gold. Since I have an ATX case I had to tinker a holder, as the TFX format is half the ATX, but also quite long (BTH: about 175x86x73mm). The fan is barely audible and the power supply is barely warm even at about 100 watts, at least I could not detect any heat. This speaks for a long service life. In addition to cables for motherboard's there enough for SATA, so that it is not just on cables. Not to be adapter can be connected. So far I could not find anything negative, so full 5 stars. The efficiency of 92% can now consume about 10-15 watts less than my old, so the cost after 2 years by the energy savings are there again my server. I will first always make in the future of efficiency.