Okay , rocking an older AIO Corsair H100i GTX on my i5 8600k OC to 4.8ghz..works well and is running cool in general. But I have the fans from the AIO plugged into my motherboard on the CPU and CPU_OPT header. Is that correct or should I have the fans plugged into the fan connection on the AIO ?!? or does it not really matter. Also my exhaust fan, in the bios I have the option of setting the fan to run based on CPU or System. I presume it is best to have it set to system? As I assume as the temps ramp up in the case overall the fan will exhaust the heat etc.