CFM vs RPM?

[ericlplante]

So, I have a question in regards to case fans (or fans in general).

What is more important RPM or CFM? I am looking to replace the stock fans that came with my Corsair h80i which runs dual 120mm fans which run at 2700 rpm and 77 CFM (not sure if that is 77cfm each or 77 altogether) http://www.newegg.com/Product/Product.aspx?Item=N82E16835181031

Anyways, I was wondering

A. are th specs of my current fans sufficient for watercooling (43 celsus under full load)

B. Which is more important RPM or CFM?

Thanks!

 

[clarkjd]

CFM means Cubic Feet /Minute. RPM is Revolutions Per Minute. The more CFM the more air and therefore cooling. The more RPM the higher the noise level. usually a fan is rated as so many CFM at a given RPM. That's why bigger fans can move the same amount of air at a slower RPM than smaller fans. The slower the RPM the quieter the fan