Discussion Speculation: Zen 4 (EPYC 4 "Genoa", Ryzen 7000, etc.)

[Vattila]

Except for the details about the improvements in the microarchitecture, we now know pretty well what to expect with Zen 3.

The leaked presentation by AMD Senior Manager Martin Hilgeman shows that EPYC 3 "Milan" will, as promised and expected, reuse the current platform (SP3), and the system architecture and packaging looks to be the same, with the same 9-die chiplet design and the same maximum core and thread-count (no SMT-4, contrary to rumour). The biggest change revealed so far is the enlargement of the compute complex from 4 cores to 8 cores, all sharing a larger L3 cache ("32+ MB", likely to double to 64 MB, I think).

Hilgeman's slides did also show that EPYC 4 "Genoa" is in the definition phase (or was at the time of the presentation in September, at least), and will come with a new platform (SP5), with new memory support (likely DDR5).

What else do you think we will see with Zen 4? PCI-Express 5 support? Increased core-count? 4-way SMT? New packaging (interposer, 2.5D, 3D)? Integrated memory on package (HBM)?

Vote in the poll and share your thoughts!

 

[Exist50]

from the anandtech web site: The actual launch date of AMD's new platform won't be until sometime in the fall, somewhere between 4 and 7 months from now. "

Thats really bites.....

Fall starts in less than a month. Shouldn't be a long wait at all. Doubt they push much longer than end of September.

 

[HurleyBird]

2275pts in GB5 for ST (7650X)!

Higher than expected. Probably loosened timings in the engineering samples.

 

[Vope45]

2275pts in GB5 for ST (7950X)!

Yeah I think amd won.

 

[gdansk]

47% better energy efficiency means it was at 170W? huge if true. or were they just comparing TDPs? need end notes

 

[gdansk]

from the anandtech web site: The actual launch date of AMD's new platform won't be until sometime in the fall, somewhere between 4 and 7 months from now. "

Thats really bites.....

That was a copy paste from computex, probably

 

[Markfw]

Fall starts in less than a month. Shouldn't be a long wait at all. Doubt they push much longer than end of September.

First, let me officially change my power estimations on 7950x to 13900k, I will go with the 1.79x figure that Abwx calculated, based on AMD information.

Second, I hope it does come out end of Sept.

 

[Det0x]

 

[StinkyPinky]

5.7GHz boost on how many cores?

 

[Exist50]

First, let me officially change my power estimations on 7950x to 13900k, I will go with the 1.79x figure that Abwx calculated, based on AMD information.

Second, I hope it does come out end of Sept.

AMD, in their own marketing, with their own cherry picked benchmark, say 1.47x vs Alder Lake. Raptor Lake can be reasonably assumed to close that gap by something like 20-25%. Neither 2.0x nor 1.79x are happening.

 

[moinmoin]

5.7GHz boost on how many cores?

As many as you can cool (not many ).

 

[Markfw]

AMD, in their own marketing, with their own cherry picked benchmark, say 1.49x vs Alder Lake. Raptor Lake can be reasonably assumed to close that gap by something like 20-25%. Neither 2.0x nor 1.79x are happening.

I will wait to argue further until benchmarks confirm a number. 8 more e-cores are not free, and its the same mfg node.

 

[Det0x]

+49% vs Zen3 at same power





You cannot post images only or links only without speaking to what you are posting to. It's in the rules.


esquared
Anandtech Forum Director

 

[eek2121]

Fall starts in less than a month. Shouldn't be a long wait at all. Doubt they push much longer than end of September.

You know he is trolling right?

EDIT: I was trying to see if I posted the exact release date here, but apparently I did not. IIRC my prediction was the 26th of September so I was a day off. Here as far as I can tell I only stated “end of September”

The entire slide deck, including launch date was leaked hours ago. Here are the important ones.

 

[Exist50]

I will wait to argue further until benchmarks confirm a number. 8 more e-cores are not free, and its the same mfg node.

The process isn't quite the same, and more cores still helps even at the same power limits. The slide Det0x just posted kinda demonstrates why.

 

[moinmoin]

Zen 4 has some surprising tweaks:

The front end to be significantly improved in Zen 4 is not something I heard before.

 

[Exist50]

You know he is trolling right?

The entire slide deck, including launch date was leaked hours ago. Here are the important ones.

No, I took it in good faith, as with the follow-up. Might be a simple misread of an old quote. Either way, doesn't hurt to clarify.

 

[nicalandia]

29% Performance boost is mind boggling

 

[HurleyBird]

View attachment 66772

Not sure how I feel about including so many games in that calculation, although at least they made sure to include a few that are below the average uplift. Still, 13% may be a bit generous.

 

[StinkyPinky]

Zen 5 will be interesting. They seem to be relying on cache and large frequency gains for these numbers. Which is great, but how much further can they push it for the next gen?

 

[Vope45]

Not sure how I feel about including so many games in that calculation, although at least they made sure to include a few that are below the average uplift. Still, 13% may be a bit generous.

Games love high clk

 

[leoneazzurro]

Zen 5 confirmed 3N+4N

 

[nicalandia]

Not sure how I feel about including so many games in that calculation, although at least they made sure to include a few that are below the average uplift. Still, 13% may be a bit generous.

Its going to be the New Gaming King. Regardless. The 5800X3D Will not beat it on Average Gaming charts

 

[gdansk]

Zen 5 confirmed 3N+4N

Wow that'll be way sooner than N5 was. Or is Zen 5 2024?

 

[eek2121]

The process isn't quite the same, and more cores still helps even at the same power limits. The slide Det0x just posted kinda demonstrates why.

Raptor Lake is on the same process as Alder Lake. The chip itself has some improvements to power management, but there are no changes to process.

 

[nicalandia]

Zen 5 will be interesting. They seem to be relying on cache and large frequency gains for these numbers. Which is great, but how much further can they push it for the next gen?

Zen5 is a new uArch. Zen4 is a enhanced Zen3