Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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Tigerick

Senior member
Apr 1, 2022
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AMD moved to chiplets because nodes were expensive enough to make even a 2-chiplet SKU cheaper than the monolithic counterpart. Now that nodes are getting even more expensive, you expect them to go back to monolithic?
Yeap, AMD has been using chiplets for long time. But if they want to double core count, then they will have to integrate more cores by using more advanced process. Upcoming Turin Zen5 will employ 16 pcs 8-core CCD to get 128 cores. And here is even further down the road, Venice platform with 256-core, guess how many chiplets would AMD use?



8 chiplets man. From 16pcs chiplets down to 8 chiplets with double core counts, ie. 256 cores. And one tCPU will be used for future AM6 platform to fight with upcoming Nova Lake...As stated by MLID, there is no mention about Zen7 in the roadmap like adroc said. Because there won't have seperate CCD for client, AMD just use the same 32-core chiplet for AM6 client platform. Therefore, Zen7 is actually a 32-core Zen6 chiplet build by N2 process combine with DDR6 IOD.
 
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leoneazzurro

Senior member
Jul 26, 2016
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Die sizes and chiplet/monolithic choices are only a design choice that keeps in account performance targets, production costs and scalability. So far it had sense for AMD to do mobile parts as monolithic and desktop/server parts with chiplets, by reusing the same CCD for desktop or server parts. This can easily change in the future, especially when the performance targets shift.
 

leoneazzurro

Senior member
Jul 26, 2016
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I mean, of course server parts will be chiplets (scalability). Low end mobile will probably stay monolithic. Higher end mobile and desktop will be chiplets, then the amount of cores, cache per die, GPU sizes, AI module size, all these will be variables in the design according to the market and performance targets. My "change" was referring mainly to the mobile stack, which until Zen4 was only monolithic, now we have the AI die addition, and in the future only the very lower end will be kept monolithic (budget laptops, probably using older cores).
 
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Timmah!

Golden Member
Jul 24, 2010
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Yeap, AMD has been using chiplets for long time. But if they want to double core count, then they will have to integrate more cores by using more advanced process. Upcoming Turin Zen5 will employ 16 pcs 8-core CCD to get 128 cores. And here is even further down the road, Venice platform with 256-core, guess how many chiplets would AMD use?

View attachment 92682

8 chiplets man. From 16pcs chiplets down to 8 chiplets with double core counts, ie. 256 cores. And one tCPU will be used for future AM6 platform to fight with upcoming Nova Lake...As stated by MLID, there is no mention about Zen7 in the roadmap like adroc said. Because there won't have seperate CCD for client, AMD just use the same 32-core chiplet for AM6 client platform. Therefore, Zen7 is actually a 32-core Zen6 chiplet build by N2 process combine with DDR6 IOD.
Is the 32C chiplet the "C" variant though? And the regular one will be just 16C, and that will be the one AMD is gonna use for desktop (as a step of from 2 8-cores ones, resolving the latency issue?) I see the last paragraph on that picture, but it kinda sounds too good to me - after x years lingering with 8 core chiplets, then jumping to 16C with Zen6 and 32C right after that with Zen7, and even using it for desktop/mobile? I mean, i would love for you to be right, but...
 

Bigos

Member
Jun 2, 2019
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Isn't the consensus that AMD won't be using server CCDs on desktop (and mobile) starting with Zen 6 anymore? So the fact server gets 16 core CCDs does not say anything about client platforms.
 

yuri69

Senior member
Jul 16, 2013
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Is the 32C chiplet the "C" variant though? And the regular one will be just 16C, and that will be the one AMD is gonna use for desktop (as a step of from 2 8-cores ones, resolving the latency issue?)
Zen 6 brings a different interconnect compared to previous AMD designs. Reportedly this also brings a split in the CCD design for desktop and server.

The pure desktop volume is low compared to servers and APUs. So it brings questions concerning the viability of a desktop-only design. Probably an APU design would be reused. Who knows...
 

Kaffeekenan

Member
Jan 6, 2022
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According to MLID Zen 5 will arrive late because of Mainboard issues. He says that the announcement will probably be around computex with availability later...does not sound good to me. I thought april was kinda save...

 

Philste

Member
Oct 13, 2023
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I don't believe in these delay rumors, but more because I think it was always fall 2024. I mean April makes no sense whatsoever, apart from just wanting to launch a product in the most random way possible.

1: AMD showed NOTHING so far, not even that ZEN5 is running. Look at ZEN4: Teaser at CES, some information at Computex (with sandbagging), launch in fall. Why wouldn't they show ANYTHING about ZEN5? If they really fear nothing will sell after the announcement, they could sandbag again or just show stuff that isn't as impressive. (Apart from the fact that 3x% IPC with slight clock regression is barely a bigger singlethread jump than ZEN4 over ZEN3. So ZEN5 definitely won't make anything before obsolete, at least not in MSDT.)

2. Boards definitely seem to be Fall 2024. I know ZEN5 doesn't need new Boards, but launching CPUs in April and Boards in fall without any use (why buy a new board when you already got the new CPU running on the old board?). That would be the most braindead move ever.

3. If Desktop launches in April as Ryzen 9000, AMD would completely destroy their own Strix Point 8x50 launch in June. CPUs would already sound old to the average dud because Ryzen 9000 is already out.
 

adroc_thurston

Diamond Member
Jul 2, 2023
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but more because I think it was always fall 2024
No.
I mean April makes no sense whatsoever, apart from just wanting to launch a product in the most random way possible.
You launch when it's ready and they got lucky.
AMD showed NOTHING so far, not even that ZEN5 is running
It's too good to show anything.
Look at ZEN4: Teaser at CES, some information at Computex (with sandbagging), launch in fall
Comp pressure was real.
Why wouldn't they show ANYTHING about ZEN5?
Because it's so good Zen4 sales would die overnight.
Boards definitely seem to be Fall 2024
There is none.
AMD would completely destroy their own Strix Point 8x50 launch in June.
No?
It's for premium AI PCs.
 

H433x0n

Golden Member
Mar 15, 2023
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According to MLID Zen 5 will arrive late because of Mainboard issues. He says that the announcement will probably be around computex with availability later...does not sound good to me. I thought april was kinda save...
His delay claim isn’t about the motherboards - it was that Turin (and possibly Granite Ridge) needed a new stepping. I don't really buy that personally.

I think there's probably some truth to the X870E rumors though. It doesn't seem super difficult to add USB4 to X670E. They also did something similar with X370 -> X470.
 

Philste

Member
Oct 13, 2023
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Just like Zen3 sales died overnight?
That's what I want to say...

Adroc says 32% in SpecINT with slight clock regression. Sure, thats nice but not a lot bigger singlethread leap than ZEN4 was. ZEN5 sounds crazy good for servers tho.

But MSDT is something different. 95% care only for gaming and even if ZEN5s IPC translates really good there (let's say 40% over ZEN4) that would be only 15-20% better than ZEN4 X3D which isn't a too crazy leap. I don't see how ZEN5 could kill everything in the Desktop market.
 
Reactions: Timmah!

Timmah!

Golden Member
Jul 24, 2010
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That's not the real number, the real number sounds like pure bs.
It just showcases the general direction of Z5 and future AMD cores (chunggus IPC bumps to make dense a very viable option across data center in general, not just cloud in particular).
You implied 40 percent last week, so even that is too low?
 

adroc_thurston

Diamond Member
Jul 2, 2023
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Alright, so you posted a made up BS number here in this forum months ago because the real number would sound like BS, got it.
Yeah, leaps like those just don't happen until they do.
You implied 40 percent last week, so even that is too low?
how do I even say that without sounding schizo?
 
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