Before the AMD zen5 architecture product was released, many details of the zen6 architecture were revealed, which looks extremely exciting. At the end of September this year, MLID leaked some preliminary news about ZEN6, including the manufacturing process was upgraded to CCD 2nm, IOD 3nm, CCD was upgraded to native 32 cores again, IPC performance was improved by 10%, support for 16 channel memory, AI ML FP16 floating point instructions were added, and so on.
According to MLID's latest statement, the EPYC Snapdragon with the ZEN 6 architecture will have a special version EPYC-E, where E may stand for Edge, that is, for communication and edge computing, which does not require too many cores and does not consume too much power.
There are two versions of EPYC-E, one is the standard version, up to 64 cores, supports eight-channel DDR5 6400+ MHz high-frequency memory, and the extended connection provides 64 PCIe strips PCIe 60。
Yes, Zen6 will introduce PCIe 60, the relevant specifications were released in January 2022, and the bandwidth of each unidirectional channel is 8Gb S, and under X16, it is 128Gb S.
The second is the entry version, which is halved in specifications, that is, up to 32 cores, ** memory, and 32 PCIe 50 and 16 pcie 60。
Since each CCD natively has up to 32 cores, only two CCDs are needed for the EPYC-E standard version and one CCD for the starter version, and the remaining space can be used to configure other different units.
For example, NCD, or Network Compute Die, is based on the acquired Pensado Salina.
Another example is FPGA Die, as well as any other module that needs to be extended with related functions, which can be flexibly configured.
Obviously, this is not the greatest strength of ZEN6 EPYC, if it is a full blood 16 channel memory, then only 8 CCDs are needed to form a huge 256 cores and 512 threads!
However, MLID also claims that there will be a version of the 3nm process at the same time, and a single CCD will be up to 16 cores, which may be used in some less demanding fields.
As for zen6c, I haven't seen it for the time being, it may no longer be divided, and it may not have been leaked yet.