I have an AMD FX8350 CPU, it isn't overclocked, but it still has the stock fan, I'm wondering about 2 things; 1: Are my fan RPM's normal (they're typically between 4000 and 6000) and 2: what would cause it to fluctuate rapidly between 2 fan speeds, currently I'm monitoring it and every second or so, it changes between 5037 RPM and 5075 RPM, what could be causing this and what are the solutions?