Everything, including the kitchen sink
The REVOLUTION 85+ comes in two flavours; one is approved for SLI usage and other, as shown here, for ATI's CrossFire. We believe it to be more of a marketing spin than based on fundamental differences between the two, as both graphics-card companies' high-end cards pull off the 12V rail to the same degree, and there's no variation in the rail limits.
Enermax espouses a whole bunch of detail on what makes the REVOLUTION series great. We'll disseminate the salient points on the following page.
High-end PSUs have become fashion items of late. A nice-looking pouch holds the Medusa-esque cables in place. The manual, too, is pretty good, explaining how the various rails are wired up.
Cables, ahoy!