Well, I've been using it for 2 years. 2 years of noise (like a dentist's drill as the friend below mentioned but of course not as loud), and indeed different levels every day since the fan can't decide what its RPM Range is, every Boot of the PC and different RPM (set by the BIOS/Asus Fan Xpert always at 100% and sometimes 50% during the periods when it was hitting Flash at 18000 RPM and sounded like it was going to pop off the Heatsink), one at 10k, one at 12, 15, up to 18. 2 years of inadequate cooling, since when I first tested it under Stress Test and large file transfers, it kept the temperature low for quite a bit longer than the stock SSD Heatsink but ended up at the same temperature. Strangely though now that it was at its last legs, I tested it under Stress Test and 350GB transfer with the Fan Control App (which by the way is the only program I found that allows you to adjust the fans based on the NVMe temperature, and generally works with anything that has a Heat Sensor, unfortunately I just found it now) it didn't exceed 62°c, even though it hit 10000RPM Max... I don't know if I had done more time-consuming Tests when I first got it, or if it was hot (which anyway when it's hot I set the Air-Condition to 21-24°c, a 12k unit in the bedroom)... Anyway, in the end I had to replace it since it wouldn't start below 40% or 4000 RPM when I adjusted it with the speeds (fantastic program the Fan Control) and it didn't follow the speeds as it should, one 2000 lower one thousand higher, etc (it also hit below 4000 RPM since 4000 was the minimum on the curve, whatever)... I don't know if it was like that due to 2 years of usage at 100% but whatever.

Fortunately, it finally started to give up which made me search and find the Fan Control, which prompted me to get the Icy Box Tower this time (which I had avoided the first time due to the lack of reviews and that it looks bulky and a bit ugly in the photos). If you want, check out my Review on that one (In Short, prefer that one).