because G serious is not OC product and fan speed is auto detect, so we lock fan speed control in BIOS.
To be quite honest that's a little of a cop-out when it's an ROG product and ROG are glamorized as OCable, Customizable, best of the best.
Though i agree with the Fan Speed control, though my G Series had 3x fans die because the i7 runs constantly warm. If it had FanXpert control, with the linear fan curve that would be fabulous. Though, I understand why not, because people would break their systems and come complaining.