These Antec 120 mm Tri-cool fans come with a built-in fan speed controller. You can adjust the speed of the fans to low, medium, or high depending on your airflow needs.
On low speed, these fans are very quiet. Antec 3-Speed Case Fans aren't quite as quiet as specialized quiet case fans, but as far as silence goes, they do a pretty decent job, and have the added advantage of being adjustable to your future needs.
This Antec TriCool is 120mm x 120mm x 25mm for added airflow without added noise.
