very quiet, even at maximum power you can hardly hear them in a closed case. I installed all 5 as hull twists, the hull airflow became fantastic. in a long stress test with a gtx 1080 + 8700k overclocked (with a consumption of about 150 watts), the air inside the case remained cool, the blown air flow was also not very hot. but most of all, perhaps, I was pleased with the noise level - they are really almost inaudible even at maximum speed of 1900 rpm

There is a couple in the PSU and Zalman-cooler of the processor, connected together in a 4-pin CPU. Everything that I used to put in the PSU crackled due to a non-standard position, or the air made noise due to the proximity of the board, and at reduced constant speeds, the PSU warmed up in games and sometimes passed out. In Chrome with a dozen pages and YouTube, 1080p60 spins at 950-1200 rpm, which can be considered conditionally silent. My goal - at night no rumble is achieved. The main thing

I took Zalman as a replacement, I had two of them, they were noisy like a runway. Arctic 2 pieces, even at the very peak, you can’t hear it at all. Very quiet, I really advise if the children are at home or often sit at the PC at night to buy these coolers. Two meters from the computer, the bed is completely inaudible. And what is no less important, they work well, quietly, but they blow effectively and it even freezes the legs near the system unit!

It can be used as a cooler fan and cool the processor, it can be used as a case. Pretty quiet, even at 1000 rpm. The sound is acceptable, but in my case I have a huge radiator and a cold i3 10105f and this fan either does not turn on at all (up to a processor temperature of 47 degrees) or at low speeds. If you put a stress test, it spins up to + -1500 rpm, the noise is decent, but tolerable. At some speeds, say 800 rpm, 1100 rpm, it seems that there is an extraneous sound. I have it in white…