The flagship offer are the 80 Plus Titanium rated units, which offer efficiency of up to 96 percent at 50 percent load on 230V. The Prime Titanium PSU series will be available in 650W to 1000W range and offer fully-modular design, low ripple noise of under 20mV, extended hold-up time of above 30ms, premium hybrid control and gold-plated high-current terminals.
The Prime Titanium series will come with a 135mm Fluid Dynamic Bearing fan which should keep it well cooled even under full load.
The Prime series will also be available in Platinum version, with 80 Plus Platinum efficiency rating and in 550W to 1200W range as well as Gold version but Seasonic only showed 850W and 1200W Platinum versions and 1000W Gold version at Computex 2016 show, as well as 1000W Prime Titanium, so we are not sure when these will be available.
Currently, Seasonic only lists Prime Titanium in 650W, 750W and 850W versions at its website so we suspect that these will be the first to hit retail/e-tail. Unfortuantely, the price has not been confirmed yet.