I already have my own hardware, and the noise isn't that bad.  I was just curious if I could put in a high powered fan that isn't quite as loud and would do the same job.  I have searched everywhere even looked up the brand of the fan inside the machine but can't find the stats on how much airflow it puts out.  I grabbed a few 130cfm and that is pretty powerful... the most powerful I have seen anywhere online is 200cfm.  So I am guessing you don't know what airflow these have stock?