In June, AMD released the EPYC97x4 series of processors using the Zen4c streamlined architecture, targeting high-density cloud-native applications. On the consumer side, although there has been no official confirmation, various evidence shows that the two entry-level products Ryzen 57540U and Ryzen 37440U are the first to use large and small core designs, with Zen4 partnering Zen4c.
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Now, for the first time, we finally see the internal structure diagram of the large and small core design. We can see two large Zen4 cores, four small Zen4c cores, and the GPU core display part.
According to relevant data, the chip area of this design is137 square millimeters, up to 6 CPU cores and 4 GPU cores in two large and four small ones.
Ryzen 77840U and Ryzen 57640U have up to eight Zen4 CPU cores and 12 GPU cores, with a total area of178 square millimeters, a difference of 23% between the two.
But note that they are all 4nm processes, while on the server side, the EPYC97x4 series is a 5nm process.
AMD officials made it clear thatUnder the 5nm process, the Zen4 core plus L2 cache is 3.84 square millimeters, and the Zen4c core plus L2 cache is 2.48 square millimeters, which is a full 35% reduction.
It is worth mentioning that AMD’s Ryzen Z1 series, designed specifically for handheld computers, is also suspected to be a large and small core design. After all, the specifications are too similar to the Ryzen 57540U.