When you have a beastly computer you need a decent power supply to keep up with it. While I personally seem to be comfortable with a single-rail 750W power supply some people might need more wattage than that. Anandtech recently reviewed the In Win 1200W power supply with its “Japanese Industrial Grade Capacitor” which should be plural and “Strict Voltage Regulation (+/- 5%)” which is only as strict as the ATX spec.

It’s designed to blend in with your case.

(Image from Anandtech)

Anandtech had a few complaints about the power supply. Firstly, they complained that the provided cable is only able to carry 10A which is insufficient if you actually intend to draw its rated levels of amperage. They also complained about the price being too high though acknowledge that the price might drop to around the $200 mark though even then it would be up against comparable competition. Check out Anandtech for their review.