This has to be one of the most unique looking bases I have ever seen on a heat sink. In one of the emails I received from T.I.T.I they called this the sandwich cooler and now I see why they call it that. You can clearly see in the pictures that aluminum and copper are sandwiched together to create the base of the heat sink, with the part of the base that touches the core looks to be solid but upon closer inspection it is sandwiched pieces of copper, and is held together with screws. The base had a very good finish and felt very smooth.



Link: OCC