Intake Fan Question

[MoFunk]

Hi Guys! What size fan should I use for an intake hole in the front of my case that I plan on cutting out? Plus which size would give me the best yet quietest performance? Noise is a huge consideration unfortunately! Thanks for any help

 

[Apex]

As big as possible. 120mm is a good choice if it fits.

 

[Phunktion]

It's generally easier or at least cheaper to find quiet 92mm and that's my favorite size for intakes but 120mm's have way more airflow so it's a tradeoff..