AMD's Zen 4 microarchitecture is currently under development

AMD's Zen 4 microarchitecture is currently in development. (Source: Anandtech)
AMD's Zen 4 microarchitecture is currently in development. (Source: Anandtech)
AMD hinted during its recently concluded Next Horizon Event that the Zen 4 microarchitecture is in the design phase. No further details were revealed but chances are that it will be using an advanced node for this architecture that could debut in 2021 or later.

At its Next Horizon Event earlier this week, AMD officially said that it had started working on the Zen 4 microarchitecture. It did not disclose anything else so we can only speculate as to what it could be. 

The present Zen 2 microarchitecture is already being sampled and CPUs made with Zen 2 such as the EPYC Rome are 7 nm parts fabricated using TSMC's first generation N7 technology. Zen 2's successor, Zen 3, will continue to be a 7 nm part and will be made using TSMC's N7+ technology that will employ EUV lithography. So that leaves us wondering as to what could be Zen 4's manufacturing process. We can speculate 5 nm, but that would be just a wild guess at this point.

The Zen 3 parts are expected to start shipping in 2020, which means we will be seeing AMD sticking with 7 nm for at least the next two years. Zen 4 could start shipping in 2021 or even later. What would be the likely benefits of Zen 4 you ask? The same as with any processor generation — higher performance per watt than previous generations. 

It remains to be seen what AMD has in store for Zen 3 and beyond. We are currently in the Zen+ stage, which is an optimization phase in AMD's inflection-optimization cycle. Thus, upcoming inflection phases are Zen 2 and Zen 4, with Zen 3 more likely to be a Zen 2+ than a major architecture revision.


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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2018 11 > AMD's Zen 4 microarchitecture is currently under development
Vaidyanathan Subramaniam, 2018-11- 8 (Update: 2018-11- 8)
Vaidyanathan Subramaniam
I am a cell and molecular biologist and computers have been an integral part of my life ever since I laid my hands on my first PC which was based on an Intel Celeron 266 MHz processor, 16 MB RAM and a modest 2 GB hard disk. Since then, I’ve seen my passion for technology evolve with the times. From traditional floppy based storage and running DOS commands for every other task, to the connected cloud and shared social experiences we take for granted today, I consider myself fortunate to have witnessed a sea change in the technology landscape. I honestly feel that the best is yet to come, when things like AI and cloud computing mature further. When I am not out finding the next big cure for cancer, I read and write about a lot of technology related stuff or go about ripping and re-assembling PCs and laptops.