The new Seasonic X-Series 560 W is an impressive power supply. During our tests it achieved efficiency always above 87%, peaking 90.3%, voltages very close to their nominal values (3% regulation instead of the traditional 5% regulation), and extremely low noise and ripple levels. On top of that, due to its highly overspec’ed components, we could easily pull 730 W from it with efficiency still above 87%. This is remarkable.
 
The only “problem” with this power supply is its price, too close to the X-Series 650 W’s price. With only USD 10 difference between them, you may want to buy the 650 W model instead to get a higher labeled wattage (even though the 560 W model is capable of easily delivering 650 W) and, mainly, two extra video card cables. Or, if you decide to see this in a different angle, you may want to buy the 560 W model and save USD 10, with the only drawback of having only two video card cables. It’s your call.