Scythe Ninja Plus Revision B CPU Cooler
 

"I really like the design of the heatsink, aside from the looks of it, from an engineering standpoint. There is a copper block screwed down to a small aluminum heatsink, which have 12 (or six, depending on how you look at it) hollow copper pipes sandwiched in between them. Attached to all those copper tubes are 23 thin aluminum sheets, which look like they were soldered on. What they soldered them on with, I don’t know, but they’re attached firmly."

http://www.reviewdesk.com/ninjarevb/