Hello everyone, I am looking for suggestions on me possibly getting some new fans. I have been looking at getting the Noctuas for some time now. I currently have 3 of the Corsair AF-140 quiet fans and 2 SP-140 and one AF-120 in my Corsair 750d chassis. Over the last couple of months I have noticed that my PC isnt as quiet as I would like it to be. I have heard Noctua fans to basically be the best fans you can get.Now, the reason I havent bought them already is that I am concerned that they might not be exactly what I am looking for. I understand that they use PWM and I can control the fan speed, which is wonderful, however I am wondering if I set the fan speeds to around 900-1000 rpm how is the performance going to be compared to my Corsair fans running at max speed?In my set up, I have 2x Af-140s in the front as intake. I have 1x Af-140 in the rear as exhaust, I have 2x Sp-140 on my Corsair H115i and I have one Af-120 on the bottom blowing directly at my video card. So basically I am looking to swap all of them out for the Noctua fans. Is this something that is recommended?