Amd defends multi design
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In a recent speech at HotChips, AMD has championed the multi-chip design used to design its powerful new EPYC processors for the server market. Recall that these processors work with the SP3r2 socket and consist of a total of four Summit Ridge dies to add up to a maximum of 32 processing cores.
AMD talks about the benefits of modularity of EPYC and Threadripper
AMD defends that this type of design gives tremendous flexibility to its architecture, since it is highly modular and the proof of this is that the same dies can be used to manufacture simple 4-core domestic processors and also professional monsters of 32 nuclei. For now Summit Ridge is the only piece of silicon that is manufactured under the new and successful Zen microarchitecture, AMD is already putting the final touches to what will be the second piece of silicon under the tutelage of Zen, Raven Ridge that will give life to its new desktop and laptop APUs. AMD claims that 5% of the best dies are used for Threadrippers and a higher percentage is used for EPYCs.
AMD Threadripper vs Intel Core i9: Comparative Analysis
The use of a relatively small die with only 8 cores allows achieving a performance in the manufacturing process that is much higher than that obtained with the creation of much larger dies. This translates into much lower manufacturing costs in addition to the R&D savings from developing a monolithic 32-core product. A money saving that allows AMD to sell a cheaper final product and that more users can benefit from its benefits.
Each of the Summit Ridge dies includes five Infinity fabric buses, an internal one for communication between the two CCXs, to which are added four dies at the edges for communication between the dies of multi-chip processors such as Threadripper and EPYC and also for communication between different sockets on the same motherboard.
In essence we can say that AMD has developed Zen as an extremely flexible product that can be adapted to all environments with the best possible price-performance ratio.
Source: techpowerup
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