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The AMD Zen2 family still uses a modular multi-chip design with only eight CPU cores per Die.serverSnapdragon has up to eight Dies, which can achieve up to 64 cores. Desktop Ruilong is a Die (two spaces reserved), up to eight cores, and all with a separate 14nm I/O Die for input and output control. .
Such a design is obviously very beneficial to reduce design difficulty and manufacturing cost, and is a key to improving the yield.
At the beginning of the first generation Zen family, the yield rate was about 80%, although slightly higher, but at that time it was relatively mature and less complex 14nm, so 7nm Zen2 can achieve 70% yield before release. It has been very difficult, and it will obviously continue to improve in the later period.
As a comparison,Intel's current top product is 28 cores, using 14nm process, and the yield is only 35%.- Of course, this is not to say that the Intel 14nm process is not good, but the integration of 28 cores and various control modules on a single chip is too difficult.
Therefore, Intel also had to re-release a similar multi-chip package, the latest release of the Xeon Platinum 9200 series to achieve 56 core.