AMD: EPYC MCM approach saves 41% vs monolithic design

Posted on Thursday, August 24 2017 @ 14:02 CEST by Thomas De Maesschalck
AMD gave a talk at the Hot Chips symposium and one of the things they discussed is the cost savings they achieved on the EPYC server processor by going for a multi-chip module (MCM) design.

While they got blasted by Intel for creating a "glued-together" server chip design, AMD reveals that using four eight-core Summit Ridge dies to create EPYC results in big cost savings. The company says the MCM approach with Infinity Fabric links has a die cost that's 41 percent cheaper than that of a theoretical monolithic design.
The relatively smaller 8-core common die has an inherently higher yield than a larger chip due to the rule of inverse-exponential reduction in yield with increasing die-size. This, coupled with the R&D costs that would have gone into developing the hypothetical monolithic 32-core "Zen" based silicon, works out to a significant cost saving for the company.
The company also reiterated that the top 5 percent Summit Ridge dies end up in the Ryzen Threadripper lineup, and a higher percentile go to the EPYC lineup.

AMD EPYC cost saving of MCM

Via: TPU

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Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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