Thermaltake does a great job of giving you what you need yet keeping it simple with their cables. There are no oddball cables with mixed connectors and all of the cables are of decent length. There are more than enough connectors of all types to make sure that you can use the full 850W available, except for the single EPS12V connector. It would be nice to see a second one available in case it is needed instead of needing it and not having it.
Rail distribution is as simple as it gets with a single 12V rail. There is no need to worry about load balancing here.
A Look Inside
Just as we've seen with the Corsair units, the digitally controlled power supplies allow for significantly reduced component count. While things look rather bare on the inside, this also means there is less heat loss through components and thus better efficiency. This also means better airflow and cooling.
A single Nippon Chemi-con bulk capacitor sits on the primary side of the power supply.
The secondary side is littered with more Chemi-con caps.
The Yate Loon D14BH-12 140mm fan provides the active cooling for the DPS-850.