So Der8auer has apparently taken issue with the circulated claim that Threadrippers are two die and two dummy placeholders. He not only delidded a second Threadripper, but popped the dies off it for good measure. https://www.youtube.com/watch?v=N-uKQ6RfUdk
After I got done crying over the wasted hardware he did have some cool photos of the die circuitry he's posted here: http://www.mediafire.com/file/7l8nyi1q43tm3ab/TRDie.zip
And, both of his TR chips had four Ryzen die on them.