So I am currently water cooling an AMD Fx4300 (i know its bad im upgrading soon) and I know that the temperature readings are socking for the FX series processors. Currently my fans run at full 1800RPM constantly but I have found an option in my bios to take them down to 500RPM. This speed is controlled by the temperature and so is it safe to run this or not? does the motherboard get a different reading to the one shown in my temperature monitoring software?