| From: William Park via talk <talk@gtalug.org> | | On Sat, May 09, 2020 at 08:00:33AM -0400, Dave Collier-Brown via talk wrote: | > I suspect the new low-cost chip is a simplified version of one of the | > four processor cores, and might cost about 1/5 of what the server | > chips cost to make. | | Or rather, ones that failed QA. :-) Why simplified? Why Failed? Each Zen 2 package is made from a group of "chiplets". Each processor chiplet (CCX) has 4 cores, with each providing 2 SMT units: 4c 8t in current notation. AMD uses a 7nm TSMC process to make them. Then they have a chiplet or several to do I/O. Density doesn't matter as much here so they are made using something like a 14nm process. So: a low-end Zen 2 package has fewer chiplets. It probably has a lower clock speed. AMD might "bin" them for speed. That means: manufacture them, test how fast they can run, and sell the faster ones as separate SKUs.