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

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Mahboi

Senior member
Apr 4, 2024
962
1,742
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Gamers are a loud bunch. But you are right, is anyone really losing out on a gaming experience by having only a 5600X/5800X3D? I very much doubt it. I can't understand why people call it a fail because it didn't improve gaming much. They need to chill out. I think the techtubers are doing it for views.
We'll rarely find a better occasion to prove our point.
Yes the game is very poor in terms of GFX optimisation...so what? What we're seeing here at 1080p is exactly what we'd see at 4K with basically any GPU.
 

Josh128

Senior member
Oct 14, 2022
273
394
96
X3D delay seems to speak to real internal execution or development problems with Zen 5. At first it was rumored to be coming sooner than it did last generation (and apparently for good reason), now it seems like it will be the same difference in timeframe or possibly even longer than last gen. Perhaps MLID was right about the issues with Zen 5 development all along?

Makes you wonder, whats the cause of the delay? Same 7/6nm process for X3D die, presumably, and same 4nm process for CCD. New CCD stepping required for X3D possibly, or something else? We've already seen that Turin classic seems to be a new CCD stepping from launch desktop, maybe the delay is to produce more volume for EPYC?

Then we've still yet to see 3nm Zen 5C in action. Who the hell knows what joy it will bring? Overall, seems Zen 5 development and execution has really kicked AMDs ass...
 

Hitman928

Diamond Member
Apr 15, 2012
6,020
10,340
136
X3D delay seems to speak to real internal execution or development problems with Zen 5. At first it was rumored to be coming sooner than it did last generation (and apparently for good reason), now it seems like it will be the same difference in timeframe or possibly even longer than last gen. Perhaps MLID was right about the issues with Zen 5 development all along?

Makes you wonder, whats the cause of the delay? Same 7/6nm process for X3D die, presumably, and same 4nm process for CCD. New CCD stepping required for X3D possibly, or something else? We've already seen that Turin classic seems to be a new CCD stepping from launch desktop, maybe the delay is to produce more volume for EPYC?

Then we've still yet to see 3nm Zen 5C in action. Who the hell knows what joy it will bring? Overall, seems Zen 5 development and execution has really kicked AMDs ass...

Rumors being wrong does not equal a delay.
 

Tuna-Fish

Golden Member
Mar 4, 2011
1,474
1,959
136
I understand it that such instructions will both write to PRF and to memory, so the number of store pipelines still matters.

Yes. This helps less against spilling due to register pressure, where latency is usually out of the critical path, as the spilled value is (at least supposed to be) not immediately reused, so the store and load can then occur in the shadow of other ops, and more to speed up function call boundaries, because many calling conventions (grr windows) on x64 pass values on the stack way too often, leading to push-ret-pop and push-call-pop sequences, where if the branch is correctly predicted (and ret is nearly always correctly predicted), the latency between the push and pop is on the critical path.

This does what it's meant for very well, and generally on AMD it's no longer worth it to spend time bit packing results into registers to avoid spilling to stack across fn call boundaries -- it still wastes the store, but that trades against whatever shifts and ands you need to, say, put two 32-bit values into a 64-bit register, and unlike the shifts and ands, the store is not on the critical path.
 

Nothingness

Diamond Member
Jul 3, 2013
3,022
1,950
136
This reminds me a thing I found during the design of a CPU I was involved in: there was a system register that when written to was flushing many structures because some of its bits controlled various parts of the CPU (MMU, caches etc). As this register was not supposed to be written often, no special care was taken when writing values in it. That's when I realised Linux was writing to this register on every syscall, rewriting the same value as before (don't ask why, I don't know). Needless to say, the designer I talked to then made sure he compared old and new values of the register to prevent useless flushes. These details can have very measurable impacts on end-user applications.
 

eek2121

Diamond Member
Aug 2, 2005
3,098
4,386
136
So much for the September rumor. it seems 9000X3D is launched at CES 2025:

Blame the current launch debacle.
X3D delay seems to speak to real internal execution or development problems with Zen 5. At first it was rumored to be coming sooner than it did last generation (and apparently for good reason), now it seems like it will be the same difference in timeframe or possibly even longer than last gen. Perhaps MLID was right about the issues with Zen 5 development all along?

Makes you wonder, whats the cause of the delay? Same 7/6nm process for X3D die, presumably, and same 4nm process for CCD. New CCD stepping required for X3D possibly, or something else? We've already seen that Turin classic seems to be a new CCD stepping from launch desktop, maybe the delay is to produce more volume for EPYC?

Then we've still yet to see 3nm Zen 5C in action. Who the hell knows what joy it will bring? Overall, seems Zen 5 development and execution has really kicked AMDs ass...
Software readiness. Have you SEEN what you have to do to Windows on 2CCD parts for example?

As usual, AMD is under investing in software and not working closely enough with Microsoft. Microsoft going ARM (time) exclusive for the latest update also did not help much.
Rumors being wrong does not equal a delay.
I spoke with someone that works for a partner, and the September date was communicated with them, however the poster below is right. An unannounced, unreleased product technically can’t be delayed.

I was really hoping for a September release, so it sucks that now it might be February/March before we see new SKUs.

WTFTech seems to think one Zen5 X3D part will launch this year. We will see.
 

eek2121

Diamond Member
Aug 2, 2005
3,098
4,386
136
Do you know acquaintances that happen to work for GPU partners 🤔

Powercolor rep thinks RDNA 4 is launching only next year but MLID disputes it. Is AMD doing a jebait again ?
Not anymore. I quit working some time ago (medical issues) and the few people I did know have been gradually changing jobs, so soon I will know nobody and I will be sad.
 

marees

Senior member
Apr 28, 2024
331
401
96
AMD sets things straight

Gordon Mah Ung asks simply: “Is AMD blaming reviewers here? Did hardware reviewers screw this up?”


“Not at all,” McAfee said.

“At the end of the day, there were a series of decisions that AMD made, that differed from how reviewers were testing, that led to different conclusions,” McAfee said. “This is not saying that reviewers did anything wrong, or that there’s anything in the process of how these reviews were done that was incorrect. We were as puzzled by some of the results that reviewers were seeing as the Ryzen fans are out there in the world, and that’s really what led us to this sort of multi-layered conclusion that there’s a number of factors going on here that created that separation.
This is no shade whatsoever on reviewers and how they tested, this is completely on things that we didn’t really understand as a part of the way that we tested and configured our products, and how that differed from both reviewer game suites moving in a slightly different direction, as well as how they tested the product versus how we did. It’s not a criticism of reviewers or how they test, simply significant differences in setup and configuration that got us from point A to point B and I think we understand that now.”

 

CouncilorIrissa

Senior member
Jul 28, 2023
518
1,982
96
I'm talking in general terms, the idea that something can't be delayed because it wasn't put in a public roadmap is incredibly stupid.
From a consumer standpoint, the only thing that warrants being named a delay is when a company fails to meet deadline that they publicly committed to.

Since the roadmaps you're talking about are not public domain, then the statement that something has been internally delayed is practically worthless because neither the "original" release date nor the delay can be verified.

What's even more stupid, or shall I say tone-deaf is suggesting that this thread of all places should continue eating up any rumour popping up as gospel.
 

Abwx

Lifer
Apr 2, 2011
11,514
4,301
136
And also ask the reviewers to make broader tests because HWUB FI use only 13 games in their average and most are the same kind, NBC who used a more diverse set of games and in a bigger quantity got results that were close to the ones of AMD.

I can as well by selecting 13 specific games get all possible results that would be at odd the ones with the others, all i would have to do is to either select 13 games were AMD is as weak as posible or another set were they are very good and then get the conlusions i want.

FI Xplane is a game where Zen 5 does very well and none set apart NBC, and eventually THG, used it in their tests, they all rely on first person shooter view games or the likes.
 
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Kepler_L2

Senior member
Sep 6, 2020
512
2,073
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From a consumer standpoint, the only thing that warrants being named a delay is when a company fails to meet deadline that they publicly committed to.
So if Nova Lake releases in 2035 I guess it's not delayed.
What's even more stupid, or shall I say tone-deaf is suggesting that this thread of all places should continue eating up any rumour popping up as gospel.
I didn't say that.
 
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