I have filters on all my inlet fans, so that's not an issue. I don't care about sound or longevity, I take care of my case/fans; my only concern is maximum cooling efficiency with this H70 cooler.
This sight is in love with the gentle typhoons. Just the name alone makes me not want to use them. I dont want something gentle cooling my cpu. I have 1 ultra kaze, I think its 133cfm with static pressure, and was 9.99 free shipping at newegg, still is i believe. If I turn it down to 50%, probably can go lower just havent tried, I get the same performance as 100% when Im just web browsing or running off the windows desktop, when I wanna crank them up and bench mark or something, yes they are loud, but they perform. Have a delta on the way paid 10 bucks for that and plan on using them with an H70 soon.