Originally Posted by Hikaru12
I would recommend Prolimatec or Antec True Quiet fans for 140mm. Generally, the bigger the fan the more airflow you get and the slower you can run it at which reduces noise. This is why 80mm fans are really loud as opposed to 120mm as opposed to a 200mm fan.
Rear fans are best left as exhaust so you can get a front to back airflow.
okay then. there's no Antec fans here. Prolimatech fans come with LED, which i quite dislike. Thanks for your answer. I'll go with exhaust for rear fan.
Originally Posted by x3n0n1c
I highly recommend Noctua fans. Some may not like the colour scheme but they are pretty widely considered one of if not the best brand you can buy. They are all about great performance at really low noise levels. The NF-F12 are a great all rounder, they are designed for high static pressure for use with radiators but because of their very directed airflow they also make very good intake and exhaust fans.
They also come with something like a 6 year warranty, which tells you something about how well they are built. They are $25 each around here, which is reasonable for what you get in my opinion.
I've been considering Noctua Fans, too. I heard that they're premium fans, which come with 6 years warranty. There are 3 types : NF-S12A, NF-P12, NF-F12. From Noctua website, they say that S12A is the best for case, P12 is balanced for case and heatsink & radiator, and F12 is the best for heatsink & radiator. Since front fans in HAF XB is so close with all hardwares, i think F12 will be the best. Is it right? But it was the loudest of all. Is it loud? Some say that noctua fans are all dead silent. Is it true?