It's been awhile
It's GPU update time

Could it be...?

Yes, it is. A Arctic Cooling Accelero Twin Turbo II. Had the watercooling enthusiasts fooled for a second.
However, with that cooler my GTX670 is now 3 slots tall and the Prodigy only has space for 2...
Like all modding problems, it was solved with a Dremel.

I cut a huge hole in the side panel, cut a piece of acrylic to cover it, cut fan holes and mounting holes in said acrylic, bolted fans and a shroud to the acrylic, and finally bolted the acrylic to the side panel.
Its an after market cooler with after after market cooling , or something...