TweakTown posted a review on the Corsair Air Series AF and SP Cooling Fans

Since Corsair has been in the chassis and cooling game for a while now, it only makes sense to leap into their own brand of fans. With fans there are three important things to consider for your purchases. One is obviously the air flow through the fan. Typically more is better for most uses. The second thing to consider is static pressure or can the fan "push" the CFM it is rated for or does it flounder when placed against a cooler or radiator. The last bit to consider is the noise levels. While most users looking to extreme cooling on a cooler or in a case, don't seem to care if fans are loud, there is an ever growing user base that prefer almost absolute silence from their builds.

With Corsair's move to fans, they also realized that the market is varied and all users are not created equal. This is why there is a total of five variations in the Air Series that I am about to be discussing in depth. Corsair is offering Quiet fans in 120mm and 140mm flavors, as well as Performance versions and even High Performance fans in 120mm frames. The care package I received has at least one of each variety, while most come in the "Twin Packs" that gives you two fans in one total package. Whether you buy them as single or doubles is up to you, but let's cover the fan options available.

  Corsair Air Series AF and SP Cooling Fans Review