Here we have PowerColor's Radeon HD 5970 "12" edition, sporting - you guessed it - twelve display ports. The additional set of ports are provided via a daughterboard that attaches to the rear of the card. The card therefore takes up 3 expansion slots, but if you've got room for twelve displays you've probably got room for a big case. Obviously there aren't many consumer applications for this besides e-peen enlargement, but PowerColor reckons there will be professional interest in the solution.
Not happy with that though, we asked PowerColor to come up with something special, just for HEXUS. After a bit of rummaging around, PowerColor presented us with this, the 5970 PT: