AMD’s Senior Product Manager, James Prior talked about the dummie dies on Threadripper… Prior wrote his remarks on twitter:
“Threadripper is not a Epyc processor. Different substrate, different dies. 2 dies work, other 2 have no path to operation. Basically rocks.”
Prior also added that AMD decided to use the term “dummy” instead of “inactive” to describe Threadripper’s additional dies as there is no way of utilizing/activating these additional CPU dies.
“Yes, exactly why they’re not described as inactive, but dummy. Doesn’t matter if they were dead, or active, they’re not going to work.”