AMD Zen 4 Powered Ryzen ‘Raphael’ Desktop CPU Rumors: Over 20% IPC Gain, 16 Core Flagship at Launch, DDR5-5200 on AM5 LGA1718 Socket, 2022 Launch

Hassan Mujtaba
AMD Next-Gen Zen 4 Powered Ryzen 'Raphael' Desktop CPU Rumors Point Out To Over 20% IPC Gains, 16 Core Flagship Chip at Launch

A bucket of information surrounding AMD's Zen 4 powered Ryzen 'Raphael' CPUs has been posted by Moore's Law is Dead. In the latest video discussing Zen 4, the leaker reveals new info while also reiterating a few things we already know from the previous leaks.

AMD Next-Gen Zen 4 Powered Ryzen 'Raphael' Desktop CPU Rumors Point Out To Over 20% IPC Gains, 16 Core Flagship Chip at Launch, DDR5-5200 & AM5 LGA1718 Platform For 2022

For those of you who missed it, information regarding the AMD AM5 platform and the compatible Zen 4 Ryzen Desktop CPUs leaked out a couple of days back. The new rumors from MLID not only reiterate those but also add in some new information which we are going to talk about in this post.

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For starters, the AMD Zen 4 core architecture will be fabricated on the TSMC 5nm process node & the IOD will be based on TSMC's 6nm process node. The Zen 4 core architecture is going to deliver over 20% IPC increase which is in line with the previous rumors that indicated a 25% IPC gain. Zen 4 CPUs will feature 8 core chiplets and we can expect up to 50% performance per watt gains between Zen 3 and Zen 4. The Zen 4 core architecture will support AVX-512 instructions but it remains to be seen whether we will see the technology on mainstream parts too or not. Intel has been including AVX-512 acceleration on its mainstream consumer chips and while they do boost up performance significantly in select workloads, the power cost is way too much. AMD's implementation may work differently from Intel's but for now, the tech is only expected on the EPYC Genoa chips.

Several new information regarding AMD's Zen 4 powered Ryzen Raphael Desktop CPUs has been published by Moore's Law is Dead

Moving onward, the Zen 4 powered AMD Ryzen 'Raphael' Desktop CPU family is said to include 16 cores as the flagship offering at launch. We have heard about AMD upping the core count for its mainstream offerings but the leaker isn't fully convinced from his sources if a 16+ core part will be happening or not. If AMD goes beyond 16 cores then that would mean a CPU with three chiplets, and given the package size of Raphael CPUs, I am kind of skeptical. In the case we do get beyond 16 cores, it won't come cheap and we can see a mainstream consumer CPU with a cost of around $1000 US.

AMD Ryzen Raphael 'Zen 4' Desktop CPU Expected Features:

  • Brand New Zen 4 CPU Cores (IPC / Architectural Improvements)
  • Brand New TSMC 5nm process node with 6nm IOD
  • Support on AM5 Platform With LGA1718 Socket
  • Dual-Channel DDR5 Memory Support
  • 28 PCIe Gen 4.0 Lanes (CPU Exclusive)
  • 105-120W TDPs (Upper Bound Range ~170W)

As for the platform itself, the AM5 motherboards will feature the LGA1718 socket which is going to last quite some time. The platform will feature DDR5-5200 memory, 28 PCIe Gen 4.0 lanes, more NVMe 4.0 & USB 3.2 I/O, and may also ship with native USB 4.0 support. With that said, much about the AM5 platform will be confirmed in early-2022 when we get details of AMD's Rembrandt APUs that are going to launch on the desktop platform. The AMD Ryzen 'Raphael' Zen 4 CPUs are slated to launch in late 2022.

Here's Everything We Know About AMD's Raphael Ryzen 'Zen 4' Desktop CPUs

The next-generation Zen 4 based Ryzen Desktop CPUs will be codenamed Raphael and will replace the Zen 3 based Ryzen 5000 Desktop CPUs that are codenamed, Vermeer. From the information we currently have, Raphael CPUs will be based on the 5nm Zen 4 core architecture & will feature 6nm I/O dies in a chiplet design. AMD has hinted at upping the core counts of its next-gen mainstream desktop CPUs so we can expect a slight bump from the current max of 16 cores and 32 threads.

The brand new Zen 4 architecture is rumored to deliver up to 25% IPC gain over Zen 3 and hit clock speeds of around 5 GHz.

‘Mark, Mike, and the teams have done a phenomenal job. We are as good as we are with the product today, but with our ambitious roadmaps, we are focusing on Zen 4 and Zen 5 to be extremely competitive.

‘There will be more core counts in the future – I would not say those are the limits! It will come as we scale the rest of the system.’

AMD CEO, Dr. Lisa Su via Anandtech

AMD's Rick Bergman on Next-Gen Zen 4 Cores For Ryzen CPUs

Q- How much of the performance gains delivered by AMD’s Zen 4 CPUs, which are expected to use a 5nm TSMC process and might arrive in early 2022, will come from instructions per clock (IPC) gains as opposed to core count and clock speed increases.

Bergman: “[Given] the maturity of the x86 architecture now, the answer has to be, kind of, all of the above. If you looked at our technical document on Zen 3, it was this long list of things that we did to get that 19% [IPC gain]. Zen 4 is going to have a similar long list of things, where you look at everything from the caches, to the branch prediction, [to] the number of gates in the execution pipeline. Everything is scrutinized to squeeze more performance out.”

“Certainly [manufacturing] process opens an additional door for us to [obtain] better performance-per-watt and so on, and we'll take advantage of that as well.”

AMD EVP, Rick Bergman, via The Street

The complete leaked AMD Desktop & Mobility Ryzen CPU roadmap compiled by @Olrak29_

The Raphael Ryzen Desktop CPUs are also expected to feature RDNA 2 onboard graphics which means that just like Intel's mainstream desktop lineup, AMD's mainstream lineup will also feature iGPU graphics support. The Zen 4 based Raphael Ryzen CPUs aren't expected till late 2022 so there's still a lot of time left in the launch. The lineup will compete against Intel's Raptor Lake 13th Gen Desktop CPU lineup.

AMD Zen CPU / APU Roadmap:

Zen ArchitectureZen 1Zen+Zen 2Zen 3Zen 3+Zen 4Zen 5Zen 6
Process Node14nm12nm7nm7nm6nm?5nm/4nm4nm/3nmTBA
ServerEPYC Naples (1st Gen)N/AEPYC Rome (2nd Gen)EPYC Milan (3rd Gen)N/AEPYC Genoa (4th Gen)
EPYC Genoa-X (4th Gen)
EPYC Siena (4th Gen)
EPYC Bergamo (5th Gen?)
EPYC Turin (6th Gen)EPYC Venice (7th Gen)
High-End DesktopRyzen Threadripper 1000 (White Haven)Ryzen Threadripper 2000 (Coflax)Ryzen Threadripper 3000 (Castle Peak)Ryzen Threadripper 5000 (Chagal)N/ARyzen Threadripper 7000 (Storm Peak)TBATBA
Mainstream Desktop CPUsRyzen 1000 (Summit Ridge)Ryzen 2000 (Pinnacle Ridge)Ryzen 3000 (Matisse)Ryzen 5000 (Vermeer)Ryzen 6000 (Warhol / Cancelled)Ryzen 7000 (Raphael)Ryzen 8000 (Granite Ridge)TBA
Mainstream Desktop . Notebook APURyzen 2000 (Raven Ridge)Ryzen 3000 (Picasso)Ryzen 4000 (Renoir)
Ryzen 5000 (Lucienne)
Ryzen 5000 (Cezanne)
Ryzen 6000 (Barcelo)
Ryzen 6000 (Rembrandt)Ryzen 7000 (Phoenix)Ryzen 8000 (Strix Point)TBA
Low-Power MobileN/AN/ARyzen 5000 (Van Gogh)
Ryzen 6000 (Dragon Crest)
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