nope, because 1 is 5 blades the other is 3 so its still pushing air @ 10500 RPM and if you dont like the noise, you can always undervolt it. The counter rotating fans are used for NB heatsinks.
Here is a few pictures of my new project, all i have to do is cut a hole or some sort of design on the otherside so that my 3/4 hose can fit threw without looking tacky. Im sure ill figure it out someday.