Seasonic Unveils its High-End SS-1200XP3 PSU
The Seasonic SS-1200XP3 features an 80 Plus Platinum certification, a 1200 W capacity and fully modular design.
The range-topping Seasonic SS-1200XP3 offers a capacity of 1200 W, a fully modular design, and an 80 Plus Platinum certification that provides 92 percent efficiency at 115 Vac and 50 percent efficiency while under load.
The SS-1200XP3 also shares a number of features with other P-series PSUs including a semi-fanless operation whereby the Sanyo Denki San Ace 9S cooling fan is only engaged at loads of 30 percent or greater and 105°C rated Japanese capacitors.
Though this hasn’t been confirmed, we expect the SS-1200XP3 to contain a quad-rail design that is similar to its predecessors. We're not entirely sure why Seasonic has continued to advertise the P-Series as only having a single +12V rail.

typo?
Maybe it's because they do in fact only have a single +12v rail. I personally own the SeaSonic Platinum Platinum-860 and it says right on its sticker that it has a 71A +12V rail. Even Seasonic's website lists all Platinum PSUs as having single +12v rails; the 400W has 33A, 460W has 38A, 520W has 43A, 660W has 55A, 760W has 63A, 860W has 71A, 1kW has 83A.
There is a good chance that this new model could break the trend though because it is the highest power model yet and having multi +12v rails is nice for that little extra protection.
Y'know, because it's not like they already make some of the best power supplies out there.
typo?
Nah, it is so your 400W build can warm up the room and sound like a 800W one with cooling and power bills to match!
Platinum certification that provides 92 percent efficiency at 115 Vac and 50 percent efficiency while under load.
I sure hope not.