Air pressure values

Mar 17, 2013
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Hello Guys,

I'm wondering right. I'm switching to a custom liquid cooling loop and I'm still trying to figure out which fans to get. And no I don't want you to recommend me fans, but I have a more technichal question:
What is a good minimum Air pressure in mmH2O that a fan should have for a 55mm thick radiator with a fin density of 20fpi?

So for the people who understand my question, please help if you know it.
If you don't understand it, feel free to ask any questions.

Sincerely,

Gecko :)