I'm looking for an optimal fan for a Phanteks PHTC14-PE. So far they need to fill the minimum requirements;
Airflow greater than; 88.6 CFM Dimensions; 140 x 140 x 25mm Noise level not above; 37 dB No static pressure constraints.
Edit: Found an interesting option. Silverstone FHP 141 It has up to 171 CFM but comes at the cost of 43.5 Db.
I think I will be going with this fan unless someone finds something exceptionally close to 37 Db with a better noise/CFM ratio that also happens to have a round frame. The color is also neat, it will go well with a black phanteks heatsink. I'll update you guys on the performance once I get my rig built.