The Rosewill RFA-120-RL is a great fan for the price point. Usually fans that are under 10 dollars tend to be pretty awful. But the Rosewill is actually a great solution for under 10 dollars. It moves a lot of air (75 CFM) which is actually really good, most expensive fans can’t even move that much. The amount of noise it makes it the biggest downfall of the fan.
It’s a pretty loud fan, creating a little under 30 db. But at the price you’re paying for the product this should be expected. I honestly wouldn’t recommend putting more than one of this in your system if you really care about how loud it is. I put four in a PC that I built for someone who doesn’t care about noise. His temps are amazing with the fans. But he can hear his computer 2 rooms down.
In the end this fan is either going to be great or mediocre to you. It all just depends on whether or not you care for how much noise it makes. I would recommend this fan to anybody.