The Seasonic FOCUS SGX-650 power supply showed impressive results. Firstly, it remains quiet even at loads up to 75%. Secondly, it offers over 90% efficiency. The fan does its job very well, especially if you consider that the package is very compact. The 80 Plus Gold certificate is the best price compromise for typical use (not 24/7), so in fact you don’t really need to look for an offer with a higher certificate (realistically speaking).