they do it both, its not a smooth noise at all...
i had to stop them both to see that it indeed came from the both of them and im on 5v al the time
im using the included fan controler,
7V = terrible
12V = washing machine
Could be that you got defective fans.... or they dont like being undervolted.... idk, i tested some Fractal 140s and they didn't do a grinding noise.
What do you think would be good setup temperatures?
Below 40C idle is fine, below 70C load would be my goal, the CPU should have TJMAX around 100C, but anything over 80+ for me its not good. But your temps on speedfan seems very low, but idk if its reading it accurately, whats your ambient temperature?. Dont use speedfan for now, download HWmonitor
, and run it post a screenshot of your temps.
im using the included fan controler, do you think i'll have better sucess with fan xpert2? the thing is they are not PWM, they are 3 pins fan so i dont know what good could do fan xpert 2
FanXpert can control both PWM fans and 3pin fans fine, on chassis fans it will control them as voltage controlled, so 3pin fans are ideal for this slots, forget speedfan for now, and connect your 2 fractal fans on Chassis_FAN 1 and 2, here is a picture of your motherboard, leave the TY141 of the HR02 Macho connected to CPU_FAN header,
Run FanXpert tunning, and see what happens, if you can post a screenshot of the Chassis fans curve, also if you still hear the grinding. I'll try to post one later on when i get home, i think i have a fractal 140 still around somewhere.