I'm a longtime user of Intel NUCs and this one is my first disappointment.  It's noisy when performing basic web browsing and video watching.I know the previous reviewers seemingly had little or no problem with noise, so perhaps I received a dud.  Perhaps, but the official Intel forum is filled with posts complaining of fan noise.  And the part that is most aggravating is there is no way to control the fan.What bothers people is that while the BIOS offers various fan speed adjustments (including one lableled "fanless" that actually makes the fan louder), none of them make this machine acceptable in a home environment.  There's simply no way to limit the fan speed.So while it does do what the marketing literature says, and it's as fast as any i5, it's just not good enough as a home PC/Home Theater device.  I'm keeping it for a few days in hope that a fan control solution is found; if it isn't, I'm returning it and buying the i3 version or maybe even the Pentium one