Link: http://blog.testfreaks.com/review/review-of-noctua-nf-a15-pwm-150mm-cooling-fan/

Quote:
"The cooling fan isn’t the most exciting thing to review, surely I’d rather be reviewing a video card or maybe a game, but the cooling fan is something that is truly needed in your system as without it you will no doubt run into problems! When it comes to fans, I think Noctua is probably the leading company out there as they are one that puts everything into design and innovation of their cooling products. Today for review I have one of their latest fans, the model NF-A15 PWM, which is a 150mm fan, but it actually has mounts for 140mm sizes. The special design of the NF-A15 allows you to mount a 150mm fan wherever you can install a 140mm fan giving you full 150mm airflow performance but in a smaller sized area. Read on to learn more about a great fan… "