LT -- The Yate Loon fan does move quite a bit more air than the stock Cooler Master fan on the Centurian 5. The Yate Loon spins at about 1400rpm moving about 47cfm of air. I replaced both of my CM fans on my Stacker 810 with the Yate Loons. Note: do not trust manufacturer decibel claims -- the Yate Loon is rated at 28dba, yet is a rather quiet fan. A better rule of thumb is to remember that any rpm over 1000rpm will have audible air movement. The Yate Loon at 1400 rpm is not dead silent, but is near inaudible if more than 24 inches away.
My own experience with "quiet" fans provided some surprising info. I bought an Arctic Cooling fan (1500rpm, 56cfm, stated 24dba) which at the stated "24dba" should have been quieter than the Yate Loon. Not so (at least to my ear). When undervolted, the AC motor became rather audible while the Yate Loon was smooth and quiet. From then on out, I never did pay any attention to manufacturer claims on sound output of fans.
Many here love the Yate Loon fans, as do I. They are inexpensive and really are a nice fan. BTW -- the Yate Loons come with rpm monitoring while the more expensive AC fan did not.