IF I buy 5 fans, will it be way too loud?

[psy44]

Ok, I currently have 2 fans running, I want more, I'm thinking of replacing all the fans with these Blue 30 dB fans. Will this be extremely loud? It's kind of loud with 2 fans but it is bearable. Also, Does anyone know if they sell quiet blue fans?

 

[PCHPlayer]

2 fans @ 30dB = 33 dB
4 fans @ 30 dB = 36 dB
5 fans @ 30 dB = ~37 dB (didn't do the math)

You did not say what your current fans are rated at, but add 3 dB to their rating and that is the overall loudness of them together.
Of course the perception of loudness depends on the placement of the fans, the location of the case in relation to the listener and a meriad of other sound physics I don't remember.....

 

[ViRaLRuSh]

We learned about that stuff in Data Communication at school this week. Kinda funny someone knows that kind of stuff about how dB's are perceived as double the strength but are really only incremented in 3's.