Pros: Fans are GREAT, I upgraded my AIO with two of the fans Now just a heads-up, when you combine tow to one hub and to one header, your fans might ramp up and down do to the splitting on the 12V. You will have to control your fan curves! YES they have a "humm" to some they are a bit loud; but Me I like the sound! Kinda makes me feel like I'm on a Starship main deck! Also, good over-all white noise !! And 5000RPM (or do to the 12V split, around 4600RPM) THEY move some air!!!

Cons: Won't be able to reach the full 12v and 5000RPM on a shared hub rail - on one fan header

Overall Review: NICE!!! Over all A++

Pros: Looks good! I haven't tested them yet! But overall nice!

Overall Review: A++