For several years, AMD has been claiming that the life cycle of the Socket AM4 platform will definitely last until the end of 2020, but so far it prefers not to disclose further plans in the desktop segment, mentioning only the upcoming release of processors with the Zen 4 architecture. In the server segment, they will appear in 2021 will bring a new Socket SP5 design and support for DDR5 memory. It is highly likely that in the desktop segment, processors with the Zen 4 architecture will also bring a change in design to Socket AM5. The introduction of PCI Express 5.0 is also questionable, but judging by Intel's activity in this direction, this interface will be adopted in the server segment in a short time, compared with its predecessor.
Resource I found out through my own channels that the new chipset for Ryzen 4000 processors in Socket AM4 will be released towards the end of next year, its proposed name is AMD X670. Partial continuity with current motherboards will certainly remain, but the experience of announcing Zen 2 generation processors has taught us that there can be nuances in terms of compatibility. The change in design to Socket AM5 will take place already in 2021, it will be due to the need to switch to DDR5, although it cannot be ruled out that support for the PCI Express 5.0 interface will also be implemented “in the future”. These processors will already belong to the Ryzen 5000 family.
The number of processor cores within the Ryzen 4000 family, if we talk about flagship models, is unlikely to increase. This question lies more in the plane of marketing, rather than technical limitations. The specific performance of the cores after the transition to the Zen 3 architecture can increase by 17% on average, and in floating point operations - up to 50%.
If we talk about the possibility of introducing support for four threads per core, then within the framework of the Zen 3 architecture, AMD did not promise anything like that, as its technical director Mark Papermaster has already stated. Another thing is that AMD specialists may consider this feature for implementation in later architectures, namely in the server segment, where it will bring more benefits.
Source: 3dnews.ru