Thanks to both of you for the comments.
I guess I need to evolve my perception of Asrock, for me it used to be a budget oriented spin-off of Asus, but after reading some reviews after your comments, it seems it has evolved recently

What about Gigabyte?

very detailed post. Thanks a lot for the walkthrough, I will test this ASAP. Thanks again ! One question though : you say that only CHA_FAN 1,2,3 and the twins CPU_FAN/CPU_OPT can be contrallable, either through PWM or voltage. What about the others, such as the OPT_FAN 1, 2, 3 ? on the user manual...

Welcome to SPCR. Asus mobo fan control for the '87 series isn't that great. Install Fan Xpert. Try it with 3 front fans in and 1 rear exhaust. See what temps you get at idle and under heavy load while messing around with the Fan Xpert profile. Thanks for your help ! :) So if I get your answers stra...

Hello, I'd like to upgrade my current config : Case: Corsair Carbide Air 540 Cube PSU: Corsair AX860i Motherboard : Asus R.O.G. Maximus VI Formula (Z87) CPU: Core i7 4770k (@4.0GHz) CPU Fan : Noctua NH-U12P SE2 RAM: Kingston HyperX Black, 2x8GB, DDR3-1600 CAS 9-9-9 Graphic card : MSI GTX 980 Ti Gami...