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

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NostaSeronx

Diamond Member
Sep 18, 2011
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LinkedIn leaks pointed to Zen6 being 3nm and Zen6C being 2nm. Plus a fancy packaging tech is repeatedly mentioned.

So the manufacturing has to be up and way cheaper than Apple accepts by the time Zen 6 can be readied.
Pretty sure it was Zen5 being 3nm and Zen6 being 2nm. Oh well.



Zen5Compact(2-2/Full FPU)/Dense(2-2/Half FPU)/flEx(Single-Fin/Half FPU) = N4
Zen6C/D/E = N3E
Zen5 = N3B
Zen6 = N2

Zen5 has an optimized FPU design but it functions just as Zen4 does.
Cycle1Cycle2Cycle3Cycle4Cycle5
RegRead (512-bit)MUL (256-bit)(P0)B. ADD (256-bit)(P2)RegWriteB (256-bit)
MUL (256-bit)(P0)B. ADD (256-bit)(P2)RegWriteB (256-bit)
AVX512 = 4/4/5
AVX256 = 3/3/4
 
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Joe NYC

Platinum Member
Jun 26, 2021
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Given Zen 6 is not expected before H2 2026, Zen 5 somehow has to compete with multiple Intel generations. 2024 is Meteor/Arrow. 2025 for Lunar? 2026 for Panther? Zen 5 has to stay relevant vs all those competitors until Zen 6.

Seems that your assumption is that Intel design teams are 4x better / faster than AMD design teams, in being able to release 4 designs in time it takes it take AMD to release 1.

Maybe Pat can adopt it, next to "5 nodes in 4 years":
4 designs in time of 1 design of the competition
 
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inf64

Diamond Member
Mar 11, 2011
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Seems that your assumption is that Intel design teams are 4x better / faster than AMD design teams, in being able to release 4 designs in time it takes it take AMD to release 1.

Maybe Pat can adopt it, next to "5 nodes in 4 years":
4 designs in time of 1 design of the competition
intel will be lucky if they can launch Arrow Lake in Q4 2024. That means the next desktop big core launch is at least 1 year away, meaning late 2025.
 
Jul 27, 2020
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Good point. I'll see if we can evaluate Genoa-X.


You could use that instance to evaluate the performance benefit of V-cache for your application.



May not be directly applicable to your use case but if you get similar performance gains, that would mean you don't have to wait for Zen 5.
 

PJVol

Senior member
May 25, 2020
622
556
136
the wording i use is right, this is a comparator, that s the right terminology wich is generic because it s a circuit that compare two or more values,
You may use whatever wording you want, but the thing is you can use opamp as comparator, but not vice versa.
And again, the pic was for demonstrative purpose only. Of course the real LDO imply the use of negative feedback to the amplifier.
 
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StefanR5R

Elite Member
Dec 10, 2016
5,687
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In a way I am sad that Zen 5 appears to be such a leap over Zen 4, and is coming soon. I just finished spending about $15,000 on 3 Genoa systems. Now they will be blown out of the water by Zen 5 !
I gathered from this thread that the step up in single-threaded performance will be larger than the step up in all-core power-limited workload performance. (The latter kind of workloads, also known as embarrassingly parallel workloads, is what you are using your high core count computers for most of the time, AFAIK.) — If this thread wasn't bloated with so much off-topic talk, I would browse back to look for all-core performance projections…

Edit: I did browse back superficially after all. I don't think we have useful quantifications of all-core performance here, yet. However, according to #2,075 for example, the IPC uplift will come at a price of an all-core clock penalty.
 
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Abwx

Lifer
Apr 2, 2011
11,167
3,862
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You may use whatever wording you want, but the thing is you can use opamp as comparator, but not vice versa.
And again, the pic was for demonstrative purpose only. Of course the real LDO imply the use of negative feedback to the amplifier.
Agree that if it s an OPAMP it s an error amplifier, but in this case the opamp is often use as straight comparator with or without gain, the DC Vref will be applied to one of its input and it yield a purely analog linear regulator

In the case of Zen that s a whole different story, you didnt pay attention to the fact that its a digital LDO regulator, the control loop is very different and straight linear regulation is not desirable because for better efficency it s better to use a PWM output voltage.

 

A///

Diamond Member
Feb 24, 2017
4,352
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Big boy real computing.
Just look at TSM revenue split past Q.
???????

the smartphone market is in its biggest slow down and it isn't because of the global economy. consumers have finally awoken up and realised it's maddening to spend a grand on a cell phone that isn't even a tablet and isn't a laptop. took 5 years of samsung, apple and google and whoever else shoving their prices up consumers bums to get to this point. way tooo late imo!
 

yuri69

Senior member
Jul 16, 2013
437
717
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Seems that your assumption is that Intel design teams are 4x better / faster than AMD design teams, in being able to release 4 designs in time it takes it take AMD to release 1.

Maybe Pat can adopt it, next to "5 nodes in 4 years":
4 designs in time of 1 design of the competition
Between Zen 3 and Zen 4 launches Intel competed with core IP designs: Comet Lake, Ice Lake, Tiger Lake, Rocket Lake, Alder Lake & Gracemont. During the Zen 3-Zen 4 period Intel fielded Tiger Lake, Rocket Lake, Alder Lake, and missed Raptor Lake by a month.

It is possible to design a lot of different cores. Don't forget Intel still is a notably larger corporate entity than AMD.

Yea that's all available by late'25.

Apple is of no relevance anymore with smartphone market being on its last breath.
Sure, late '25 for volume of 2nm at TSMC but not AMD. AMD doesn't seem to have the tendency jump the node immediately, right?
 

A///

Diamond Member
Feb 24, 2017
4,352
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isn't n2 the same as n3 with the added benefit of gate all around and back sack power delivery? don't see amd wanting to risk any production on that with a very new and novel method at tsmc where apple will take that risk because of their deeper pockets. dunno what you're on yuri but give us lot some of it.
 

A///

Diamond Member
Feb 24, 2017
4,352
3,155
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They do whatever fits the bill the best.
I'll go with cheaper and proven process for amd. no point in spending apple wafer money for n2 especially with 2 very new technologies being used. no doubt tsmc can pull it off but there's always that if that creeps back in one's skull.
 

A///

Diamond Member
Feb 24, 2017
4,352
3,155
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Works for mainstream.

N2 is just GAAs, and dense CCD for Zen6 is N2, yea.
what about the back side power thing? am I mixing them up with samsung for 2nm or did tsmc prop the power delivery for something like n2e if it exists?

mainstream yeah but amd is going to shaddow apple here for costs reason. take into account the downward trend in net profits due to lower gross profits because consumer demand isn't there like it was 2 years ago. their gross and net is still better than pre covid iirc but intel's isn't obviously. until their big customers need to order spr because all their older xeons are a security risk and they won't use their brains and begin qualifying epyc for their centres. or they will and intel will be even more in the lurch.

 

A///

Diamond Member
Feb 24, 2017
4,352
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That's N2p only, which is like late'26 ramp.
which is why the other one yuri said what he said, he was referring to that lte 2026 ramp for amd. although anyone who has not been sleeping will know that amd gen to generation release schedule was far less than 24 months and only remember the covid release period. even zen 3 was allegedly late for a nearly 17 or 18 month period. zen 2 was almost 24 months. you clearly know something we don't or work for amd yourself because you didn't bother correcting me when i mentioned ces or early q2 the last few days.
 

A///

Diamond Member
Feb 24, 2017
4,352
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Vanilla Zen6 isn't N2.

I know, he thinks vanilla zen 6 was what we were talking about. he matched expected release times with whatever tsmc would have available as a stack then. he assumed 6 would be on n2.

other than having absurdist ideas amd would want to pay full price on a node that apple will be mostly taking advantage on the same year I don't know what kind of stuff yuri's been smoking or drinking.
 
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