Zen 4 & Zen 4C Power Raphael, Dragon Range, Phoenix, Storm Peak & Possibly Genoa-X CPUs

A stream of information regarding AMD’s next-gen Zen 4, Zen 4C, Zen 5, and Zen 6 architectures has been shared by Moore’s Law is Dead.

Detail of the AMD Next-Gen Zen 4, Zen 4C, Zen 5, Zen 6 basic architectures: cores, clocks and IPCs that go up with each generation!

The information revealed by MLID is unconfirmed, but keeping its recent track record in mind, most of its reported data may end up being close to the truth. In the latest video, MLID shared details regarding upcoming AMD Zen cores which include Zen 4, Zen 4C, Zen 5 and Zen 6. We know most of the products coming out on Zen 4 and Zen 4C so we will give you a Quick overview of these, but there are also key products in the Zen 5 and Zen 6 range that are shared.

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AMD Zen 4-core 5nm architecture

The AMD Zen 4 core architecture is the direct replacement for the existing Zen 3 that powers all current server, desktop and mobile segments. Zen 4 is said to be mostly a redesign of the Zen 3 core with increased cache and higher clocks. Zen 4 is expected to deliver a 15-24% IPC improvement, a 28-37% single-threaded performance increase, and a similar or greater multi-threaded performance increase over Zen 3 cores. Zen 4 will be its much higher clock speed. Prototypes and samples have already appeared with clock speeds of up to 5.2 GHz, which will play a major role in the overall performance improvement over Zen 3. Clock speeds should get a boost. 8-14% increase (sustained) over Zen 3 which is what we are also seeing in recent leaks.

An overview of various things to expect from the AMD Zen 4 and Zen 4C base architecture. (Image credits: Moore’s Law is dead)

Other improvements include the aforementioned doubling of the L2 cache that has been seen in recent EPYC Genoa sample lists while retaining the same L3 cache as Zen 3. Zen 4 will also be a huge improvement in the I/O area with PCIe 5.0, DDR5, LPDDR5 support, and more. Zen 4’s AVX-512 performance is also touted as comparable to Ice Lake-X at the same threads/clocks and 50% better than Zen 3 at the same clocks. In summary, Zen 4 will offer:

  • 15-24% increase in CPI (over Zen 3)
  • 8-14% clock boost (on Zen 3)
  • 28-37% increase in ST performance (over Zen 3)
  • MT performance increase similar to ST or better (above Zen 3)
  • 1 MB L2 / 4 MB L3 per core (vs 512 KB / 4 MB L3 per Zen 3 core)
  • Support for PCIe 5.0 (Lane Increase)
  • Support for DDR5/LPDDR5 memory (DDR5-5200+)

As far as products go, AMD’s Zen 4 lineup will include:

  • EPYC Genoa 7004 (~Q4 2022) – A0 Silicon Tapped-Out in March, B0 testing underway
  • Ryzen 7000 ‘Raphael (~2H 2022) – Samples already in progress, production soon
  • Ryzen 7000 Dragon Series (~Q1 2023) – Sampling planned this year
  • Ryzen 7000 Phoenix (~Q1 2023) – Behind Genoa during practice
  • Threadripper 7000 Storm Peak (~1H 2023) – Foreseen

AMD Zen 4C 5nm core architecture

Zen 4’s successor will be known as Zen 4C but it won’t be a true successor. In fact, Zen 4C is considered as an interim solution for specific customers and these are mainly found in the data center processor segment. AMD has already confirmed that Bergamo is one of the products to use Zen 4C cores which are designed for compute density and offer up to 128 cores compared to 96 on Genoa with standard Zen 4 cores. Zen 4 and Zen 4C products will be manufactured on TSMC’s 5nm process node.

AMD Ryzen 7000 ‘Raphael’ Desktop Processor Leaks: 8 Zen 4 Cores, 5.2GHz Max Clocks, 2.0GHz ‘GFX1036’ RDNA 2 Integrated Graphics

For EPYC Bergamo, the chip is said to support hyperthreading so you get 128 cores and 256 threads. It will retain SP5 ‘LGA 6096’ socket compatibility with 12-channel memory support and the latest SDCI (Smart Data Cache Injection) and SDXI (Smart Data Acceleration Interface) engines that are rumored for Genoa. Both are accelerators infused into the IOD, with the former supposed to offer increased cache hits of devices connected to an optimal CCX in the latency-sensitive application, while the latter will be responsible for directly copying/moving the data between devices without using Zen 4 cores. So it looks like the only Zen 4C product will be:

  • EPYC Bergamo 700X (~1H 2023) – A0 tape release targeted for June 2022

AMD Zen 5 Core Architecture

Moving to Zen 5, the base architecture would be as important as Zen 2 and will arrive after 11-15 months. Although there are certain implications due to which this may not occur, I will come to these in a moment. The core architecture of Zen 5 would be an architectural overhaul, bringing a higher IPC boost than Zen 4 (vs Zen 3) and two additional changes include the data structure (IFC) and cache design being completely reorganized. Clock speeds are said to remain stagnant or improve little with chips with multiple accelerators and higher thread counts for mainstream parts. And no, SMT4 is not happening. It’s still bi-directional SMT, but the number of cores per chip is what will increase.

A first look at AMD’s upcoming Zen 5 and Zen 6 core architectures. (Image credits: Moore’s Law is dead)

Turning now to the process node, Zen 5 cores should be crafted on the TSMC N3 or N4P node. AMD can go both ways, but given recent reports, a 2024-2025 launch for most of the product line is highly anticipated. Some products may ship early, such as EPYC Turin, which is reportedly targeting a Q4 2023 sample lead time, but other than that, the vast majority of products are expected to start shipping by Q1 or even Q2 2024. That said, some of the expected products on the Zen 5 core architecture will include:

  • EPYC Torino 700X (~2H 2023)
  • Ryzen 8000 ‘Granite Ridge’ – (~2H 2024)
  • Ryzen 8000 ‘Strix Point’ – (~1H 2025)

AMD Zen 6 Core Architecture

Now, beyond Zen 5, we may or may not see AMD’s use of the Zen branding for its core architecture. It’s recent speculation, but the Zen 5 replacement isn’t expected to arrive by 2025, so there’s still time and if there’s any change, AMD will definitely update their roadmap before upgrading. update its consumers on what’s to come. That said, not much is known about Zen 6 except that it is supposed to launch by 2025 and will again ship with higher cores, clocks, new cache designs, accelerators, etc Of course, this design may change a lot between now and launch, so let’s move on to the next one.

MLID states that in 2025 and beyond, AMD will refocus its server and laptop lines on “Premium” brands. This will serve to push a reinvigorated Intel into the server and NVIDIA into the HPC/AI and mobile segment. How that plays out, we still have at least three years to wait and see.

AMD Processor Roadmap (2017-2022)

Year 2017 2018 2019 2020 2021 2021-2022 2023 2024
Architecture Zen (1) Zen (1) / Zen+ Zen (2) / Zen+ Zen (3) / Zen 2 Zen (3) / Zen 3 (+) Zen (4) / Zen 3 (+) Zen (4) Zen (4) / Zen (5)
Process node 14nm 14nm / 12nm 7nm 7nm 7nm 5nm / 6nm 5nm 5nm / 3nm
Server EPYC ‘Naples’ EPYC ‘Naples’ EPYC ‘Rome’ EPYC ‘Rome’ EPYC ‘Milan’ EPYC ‘Genoa’ To be determined To be determined
Maximum number of server cores/threads 32/64 32/64 64/128 64/128 64/128 To be determined To be determined To be determined
High-end desktop computer Ryzen Threadripper 1000 Series (White Haven) Ryzen Threadripper 2000 Series (Coflax) Ryzen Threadripper 3000 Series (Castle Peak) Ryzen Threadripper 3000 Series (Castle Peak) Ryzen Threadripper 5000 Series (Chagall) Ryzen Threadripper 6000 Series Ryzen Threadripper 7000 Series Ryzen Threadripper 8000 Series
Ryzen Family Ryzen 1000 Series Ryzen 2000 series Ryzen 3000 Series Ryzen 4000/5000 series Ryzen 5000 Series Ryzen 6000 Series Ryzen 7000 Series Ryzen 8000 Series
Max HEDT cores/threads 16/32 32/64 64/128 64/128 64/128 To be determined To be determined To be determined
General public office Ryzen 1000 Series (Summit Ridge) Ryzen 2000 Series (Pinnacle Ridge) Ryzen 3000 series (Matisse) Ryzen 5000 series (Vermeer) Ryzen 5000/6000 series (Warhol) Ryzen 6000/7000 series (Raphael) To be determined To be determined
Maximum Mainstream Cores/Threads 8/16 8/16 16/32 16/32 16/32 16/32 To be determined To be determined
Budget APU N / A Ryzen 2000 Series (Raven Ridge) Ryzen 3000 Series (Picasso Zen+) Ryzen 4000 Series (Renoir Zen 2) Ryzen 5000 Series (Cezanne Zen 3) Ryzen 6000 series (Rembrandt Zen 3+) Ryzen 7000 Series (Phoenix Zen 4) Ryzen 8000 (Strix Point Zen 5)

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