Usually most of the motherboards I have, have a fan controlling utility in the Bios, and it works pretty well... How many Case Fans do you think a MB would support? Only 1 or 2-3? I have 7 All together I could definitly link the four exhaust Fans to the PSU, but the 3 Intake would be hardered to attach together, So it might be easier to attach them all to the motherboard and have it control the fans speed, Especially when I could have my Exhaust Fans at one Permanent Under Volted Speed.