It may seem like a question with an obvious answer but I just wondered...... :rolleyes: My current Aopen 300W PSU is fine apart from the medium-pitch electrical whining noise that the PSU makes like i've heard before with all other PSU's that come supplied with a case. Out of all other components the PSU is one of the only things I've never replaced with a branded one like Enermax for example. I can tell theres a definite difference between fan noise and electrical noise. Fan noise is avoidable with fan control but electrical is dependant on the actual device making it which is only the PSU. Does a "quiet" PSU mean it has far less fan noise and/or electrical noise?