How do you keep it cool? And does it require some soldering?
i just have a box fan that i use to move air across it and push the stagnant heat to the other side of the room and it seems to keep cool enough.
no soldering needed. the board that interfaces with the power supply plugs right in and has an on/off switch and the power is distributed through screw-down terminals. the cables they provide with the unit are the U-type clips that slide in and you screw down.
Out of curiosity, why use the box fan, other than to just move the hot exhaust away? The PSU itself has fans to keep its internals cool, and the S3 has its own fans as well. Are you saying the PSU gets so hot, even with its own fan, that you need the extra box fan to keep it cool?