No. It's tier 2. All these models are tier 2 units. Seasonic has tier 1 units, of course, but these are not among them. Still they are very, very good choices.
Seasonic
G series / G series V2 Seasonic
M12-II EVO (fully modular) Seasonic
S12G (Think of 2011 - 2013 Seasonic G series) Seasonic
S12-II Seasonic