It is somewhat case dependent . I am a fan of good airflow as long as you stay on top of cleaningdusting the inside . In a typical build I prefer 2 intake and 2 exhaust at a minimum . More restrictive builds more fans . In your case I think 2 2 in addition to your cpu cooler and psu fans would be great . No need to go expensive on fans . <| sep |> If you actually coded professionally , you would know there are logs on logs on logs and its possible to make it very difficult to get away with modifying things . If logs were open , it would especially be easy to notice if things were modified , even if they attempted to hide it . So stop calling people muppets and take a moment to stop taking your anger out on people on the internet .