What's the difference between these PSU? Looks like both of it is the Seasonic X (according the image) and they have slightly different design, why they have different names?
1. 850w https://pcpartpicker.com/part/seasonic-power-supply-x850
2. 650w https://pcpartpicker.com/part/seasonic-power-supply-ss650km
Does it suits my build? http://pcpartpicker.com/p/QWzD7P
1. 850w https://pcpartpicker.com/part/seasonic-power-supply-x850
2. 650w https://pcpartpicker.com/part/seasonic-power-supply-ss650km
Does it suits my build? http://pcpartpicker.com/p/QWzD7P