Purchased for €9.44 final price and installed in a pre-built SFF Lenovo system that had no fans (!) apart from the CPU cooler (AMD A4 6210 APU), as an intake alongside its slightly larger sibling (92mm) as a side exhaust, and temperatures have dropped from 56-58 idle to 49 idle and from 68 under load to 62. Even at 100% speed, it is practically silent. The PC is near the floor, so let's say about 1m away from my ears. Installation was trouble-free and nothing out of the ordinary time-wise. Maybe half an hour because I also cleaned the inside of the case and changed the thermal paste. For the price/performance/noise ratio, it is highly recommended. If anything changes in the future, I will update the review.

Value for money. Very good noise / air flow / static pressure ratio. Better and cheaper than Noctua options. Pay attention to the fan's performance in static pressure when choosing. While Noctua has a fan with higher air flow and quieter operation, it does not have high static pressure.