I am very satisfied with the noise level of two Delta EFB0412VHD-F00 in comparison to the original two Foxconn PIA040H12P n my ICX 7250-14P. But unfortunately, the cooling performance is not sufficient. For testing the switch is placed free on a desk. It is wintertime and the ambient temperature is somewhere 20 - 22 °C. Without any load and only 1 cable connected for ssh access, after about 15 min the temperature limit of 93 °C is exceeded and the level 2 of fan power starts. It runs only for 30 sec in level 2. But this cycle repeats about every 5 to 10 min.So here's some fans you can buy that I'd recommend.
- Delta EFB0412VHD-F00 - $12.40/ea @ Digikey
There's a REASON Delta's a top pick for ODM and OEM. 40x40x20mm, 10.1CFM, 0.416in H2O (which is insane,) 32.5dBA @ 1m, rated for 70k hours at 50C. Make sure it's THAT part number and not the Rev C, which is a vastly inferior part.
I will give it one more trial by adding an additional fan over the cooling rips of the CPU. First, I have to search the correct one. Sunon MF60101V3-1000U-A99 I was reading somewhere. Otherwise, this device and me we will go separate ways again.