Seasonic are using a Hong Hua Fluid dynamic bearing fan in this unit, they make a quality fan – this one is a HA13525H12F-Z rated at 0.50A, 12V. The 135mm fan is rated at 50,000 hours at 40c.
This is a fairly compact platform and as we would expect from Seasonic, its very well put together. There are a handful of large heatsinks and there appears to be adequate cooling for the 12V FETs. A full bridge topology is adopted for this design, along with an LLC resonant converter. A pair of VRMs generate the minor rails with eight FETs. The primary capacitors are high grade Japanese 105C rated KMR from Nippon Chemi Con – one is rated 420V 470uF and the other is 420V 390uF, for a total of 860uF.
This supply has OPP, OVP, UVP, OCP, OTP and SCP protections.