I'm a huge fan of the Intel NUC line since the first generation.  This particular one (7I7BNH) is a real disappointment, though.  It has a blower or fan that is intolerably loud.  Even at idle (0-1% CPU utilization) in Windows 10, it's screaming along at nearly 4000 RPM and sounds like a small hair dryer.  I updated to the latest BIOS (46) and tried changing the cooling settings to Quiet, performance from Max to balanced, and to customized and it still runs like this.  The only way to get it to a normal level of quiet is to set the cooling option to fixed speed / 30-32% cycle and then it runs too hot (60C+) with any normal office type use.  Going up to 35% is still noticeably loud/annoying and still too hot.Further UPDATE: I also just bought an older (6th vs. 7th) gen i7 NUC -- the 6i7KYK -- which has a much faster i7 processor than this 7i7BNH in it and the 6i7KYK is MUCH BETTER with the fan noise.  During heavier use, it does spin up, but under normal load it's audible but not annoying.  Even under higher load, it's more tolerable than the 7i7BNH is at idle. I suspect there is either something wrong with my brand-new 7i7BNH or there's a firmware fan bug still present.I realize how tolerable noise is depends on both the user and the environment.  For reference, we have 3-4 older-gen i5 NUCs which are virtually undetectable under normal office type loads in a home office and on high sustained CPU are probably about the same dB level as this 7i7 at idle but at a tone/pitch that is more tolerable.  I also use as primary machine a significantly faster i7 high-wattage HP desktop that is slightly louder than the other NUCs at idle and significantly quieter under heavy CPU loads than the other NUCs.  It is also a more tolerable lower pitch noise due, I presume, to the larger size fans it can use.I thought I might be able to shuffle this out to lab server use, but alas, driver availability/hackability is very limited. So this 7i7bnh has to go back.