High Speed / High CFM fllow 120mm case fans?

I am looking for some 120mm case fans that shift more air than the average
cheapo 120mm case fans.

I have some here that are less effective than a good 80mm fan : (

Noise is not an issue, but the do need to be 120mm to fit the job
requirement.

I guess I want something that spins faster than the normal spin speed?

I have tried one of these cheap ones at 18v and they start to show
improvement, although Im not sure how long a 12v fan would be happy at 18v?

I have even just recently bought some thermaltake fans and they are not much
better at the normal 12v in.

Any recommendations anyone?.....

Im looking for 'hurricane air flow' to cool a unit that will be housed in a
very warm loft.

Thanks
John








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