B0n0

That should be barely audible. But maybe I should go with the pwm 1200rpm (at 7v is like 700rpm) and if it is too noisy, change it to pwm. Sad part is that those noctua does not include splitter. And for the rgb part (more fps xD) what do you think about put 2 corsair ML140 pro as intake and one as exhaust? Thanks sir!

Noctua redux 900rpm should be at 900rpm at 12v? So more or less 500rpm at 7v?

And...those noctua fans are OK for exhaust or are better for radiator? Thanks for your support!

Yes sorry, I was wrong, here the NF-P14S 3 pin, 4 pin 1200rpm and 4 pin 1500rpm costs 16€. I have Asus z170 pro gaming motherboard, would need a splitter to connect those fans to the mobo but I was looking for fans to exhaust air from the case, and if exists, some silent 3pin fans...if not...I will have to go with pwm fans. Thank you!

Hello, I'm from Spain so...something like amazon.es Budget...well...I saw fans like 20€ (Venturi) or 25€ (Noctua) or the Noctua redux that aisle9 recommends 20€. I think yes, case fans at 7v are noisy, not sure which are them but basic cooler master 140mm.

Hello, I would need two 140mm fans for the top of the case (Mastercase maker 5T). I can connect both to the hub included with the case to work on dc mode (two positions) but I'm not sure which voltaje will have the "slow" mode position. I have heard good opinions about the Venturi HF14. Should I buy two HF14 and connect in dc mode or should I go with two PWM fans and connect both to the motherboard with cable splitter? I would like to have silent. Thanks in advance, Regards.