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

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Makaveli

Diamond Member
Feb 8, 2002
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Or they are concerned that Zen 5 will be a dud because the 7800X3D is faster in games.
If all the market was just gamers I could see that point but it's not.

Desktop DIY seemingly cares about gaming performance over everything else. If AMD wants to move Zen 5 chips they’re betting it’ll have to be packaged with X3D.

Just look at sales of 7800X3D vs the rest of the Zen 4 lineup.

DIY desktop market when it comes to gaming is also small.

 
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Joe NYC

Platinum Member
Jun 26, 2021
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Has any one measured iso-clock SpecInt uplift between 7700x and 7800x3d?

Or in general, iso-clock 7700x vs. 7800x3d in various workloads?
If that launch is true I guess this time they are not concerned with X3D parts affecting vanilla Zen 5 sales?

If Zen 5 x3d parts indeed arrive in 2024, or even in late Q3, I would then agree with Tom from MLID, who said that AMD should disclose full details of the full product line.

There is really no reason for AMD to try to "fool" people into buying vanilla Zen 5 or 9950x3d, delaying the product customers really really want - 9800x3d.

It didn't work with Zen 4. Ended up being counterproductive and all it created was some bitterness. Zen 4 sales were in the dumpster until 7800x3d was released. AMD wasted approx. 3 quarters or 8 months worth of sales.
 

Thunder 57

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Aug 19, 2007
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Has any one measured iso-clock SpecInt uplift between 7700x and 7800x3d?

Or in general, iso-clock 7700x vs. 7800x3d in various workloads?


If Zen 5 x3d parts indeed arrive in 2024, or even in late Q3, I would then agree with Tom from MLID, who said that AMD should disclose full details of the full product line.

There is really no reason for AMD to try to "fool" people into buying vanilla Zen 5 or 9950x3d, delaying the product customers really really want - 9800x3d.

It didn't work with Zen 4. Ended up being counterproductive and all it created was some bitterness. Zen 4 sales were in the dumpster until 7800x3d was released. AMD wasted approx. 3 quarters or 8 months worth of sales.

It's a little different this time. There is no need for a new motherboard and memory. That said, I very much doubt Zen 4 owners are going to buy Zen 5. However prices on those parts are much better than they were when Zen 4 launched.

I don't think AMD tried to fool anyone. Everyone knew the 7800X3D was coming. If they were bitter about having to wait another month or two to get one,, oh well. AMD is a business after all. They will try to make more money even if what they do is questionably stupid.
 
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Joe NYC

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If all the market was just gamers I could see that point but it's not.

I think what matters is markets where AMD has presence.

On the desktop side, in corporate desktops, AMD presence is minimal, and AMD is targeting that market with Phoenix APUs, not necessarily vanilla Zen 4 or Zen 5 desktop chips.

In gaming, vanilla Zen 5 is not going very far. Only perhaps the successors of 7600x / 7500f for extreme budget builds.

And AMD is likely not going very far with OEM consumer desktop "gaming" PCs. They will go with comparable Intel solution until the death (or a flood of RMAs) do them part. AMD needs to have a processor that is on a different level, and only x3d parts can do that.

DIY desktop market when it comes to gaming is also small.

View attachment 100992

That's not so small, and it is growing. And in 2024, it will be the only gaming segment growing, as consoles will probably decline.
 
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Joe NYC

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It's a little different this time. There is no need for a new motherboard and memory. That said, I very much doubt Zen 4 owners are going to buy Zen 5. However prices on those parts are much better than they were when Zen 4 launched.

I don't think AMD tried to fool anyone. Everyone knew the 7800X3D was coming. If they were bitter about having to wait another month or two to get one,, oh well. AMD is a business after all. They will try to make more money even if what they do is questionably stupid.

I think, in the end, AMD lost a ton of money in lost sales due to late launch of 7800x3d. The subsidies / bundles and sweetheart deals AMD was forced to offer with Zen 4, just to move it past zero were costly.

The higher revenue that 7800x3d sparked were delayed by ~8 months. 8 months of forced subsidies vs. 8 months of printing money - that makes a lot of difference.

If Zen 5 x3d really launches quite early, it would mean that AMD has learned from the painful Zen 4 lesson.
 

Goop_reformed

Senior member
Sep 23, 2023
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Desktop DIY seemingly cares about gaming performance over everything else. If AMD wants to move Zen 5 chips they’re betting it’ll have to be packaged with X3D.

Just look at sales of 7800X3D vs the rest of the Zen 4 lineup.
That doesn't stop zen 4 from outselling all of intel chips. My nearest microcenter associates told me raptor lake was actually outselling zen 4 for the first month, but after that the zen sales was rofl stomping all the intel chips combined.
 
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biostud

Lifer
Feb 27, 2003
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It is a little disappointing that the 9700X will lag the 7800X3D in gaming, even if it's just by single digits. When the 7700X launched it was a bit faster than the 5800X3D.

"It's encouraging to see that all three Zen 4 CPUs tested so far are faster than the 5800X3D, and that's not something we were expecting to find going into this testing." Link

View attachment 100982
Yeah, zen4 had IPC improvements + clockspeed over zen3. Zen5 only has IPC improvements.
 
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Joe NYC

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Is there any info if AMD will increase the VCache chip in the new X3D series? The current chip is 64MB...could we see a jump to 128,256?

This was the exact quote given by AMD rep:

""And then when it comes to X3D, and I'll just get around that now, we're super committed to X3D. In fact, we have some really, really cool updates to X3D coming. So we're working on iterating and not just rehashing it," said Woligroski.

Most obvious "updates" would be:
- bigger size of the cache
- no clock regression vs. non-V-Cache parts
- no clock regression could also allow dual CCD CPUs to both have V-Cache and not cause anomalous behavior of scheduler preferring higher clock speed CCD while lower clock speed CCD with V-Cache would have been preferable.

Any other possibilities of what could be improved in V-Cache?
 

Markfw

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May 16, 2002
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The one thing I have not heard mentioned in these last few posts.... MOST of AMDs current revenue I think is in the server area. I know its of primary concern for AMD, regardless of the actual current numbers. They currently technically dominate that market, and are growing market share as fast as they can. Business desktops (as mentioned) are probably number 2.
 

Goop_reformed

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Sep 23, 2023
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The one thing I have not heard mentioned in these last few posts.... MOST of AMDs current revenue I think is in the server area. I know its of primary concern for AMD, regardless of the actual current numbers. They currently technically dominate that market, and are growing market share as fast as they can. Business desktops (as mentioned) are probably number 2.
Zen 5 cores main selling point is the supreme single thread performance. Where is it?
 
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Doug S

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Feb 8, 2020
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Well, there are multiple things at play.
  • Third, N3B being sort of a dud and Zen 5 being back ported to N4 means that some stuff was likely cut. I find it very curious that AMD were hell-bent on keeping the CCD area the same (under 70mm^2). That leads me to think the design team had limited transistor budget, so it makes sense that the jump isn't as big as some hoped

If they did what you suggest they wouldn't cut back on the transistor budget for the core, they'd cut back on the transistor budget for the CCD. Which would mean fewer cores on the die or less L3.
 

biostud

Lifer
Feb 27, 2003
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I think that overall 15-20% increase pr. generation is what we will see going forward. And to me that seems like an ok progression, if they can keep it up every generation.

If we compare it to how little there were from intel in the 7xxx to 11xxx and from 12xxx to 14xxx. I hope intel will be able to do the same so we can get some competition again.

If zen5 will launch at the same MSRP as zen4 it will be a hard sell as the street prices for zen4 are so low now. Obviously some will always pay the premium, but if they really want the sales to get going the will have to lower the prices relatively fast.

And as they pointed out in a recent HUB video, they delay the launch of the X870 boards so the initial reviews of the zen5 will not have an expensive platform cost/frame.
 
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Joe NYC

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If they did what you suggest they wouldn't cut back on the transistor budget for the core, they'd cut back on the transistor budget for the CCD. Which would mean fewer cores on the die or less L3.

fewer cores would not work at all in the more important part of AMD business - servers - where the main parts AMD will be selling are 96c, 128c, 192c.

And smaller L3 has its own way of diminishing IPC.
 

DisEnchantment

Golden Member
Mar 3, 2017
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Gaming "close" to X3D gains, which is around 23% - 29% depending on which is your favorite outlet. Say 25% for 7800X3D over 7700X.

7700X has a 1GHz and 2x L2 and 14% IPC advantage vs 5800X3D which is very large advantage. So Zen 4 could overcome the X3D of previous generation in gaming.
9700X has 500MHz advantage vs 7800X3D and the rest should be IPC, so they were unable to overcome the previous generation X3D in gaming
If by brought close to X3D parts they mean ~5%, then that is 20% of Gaming "IPC"

But knowing marketing, "close" could mean anything from 1% to 10%

BTW, seems there is a small loss of BW on that L3 although the latency seems similar. I think they also reworked it to be scalable to 16C (or possibly 32C for future)
Zen 5 seems to be an OK core, "not great not terrible".

They took almost 2 years from Z4 for these gains is the problem.
If Z6 takes 2 years for 10% then someone's lunch is going to get slowly shared with everyone
 

poke01

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Mar 8, 2022
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Zen 5 seems to be an OK core, "not great not terrible".
It would have been nice if Zen 5 client was fabbed on N3E. Finflex is amazing. Then the clocks would have increased as well + 16% IPC would have been very nice.

Is this the first time AMD had no change in max clocks gen on gen?
 

StefanR5R

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Dec 10, 2016
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The one thing I have not heard mentioned in these last few posts.... MOST of AMDs current revenue I think is in the server area. I know its of primary concern for AMD, regardless of the actual current numbers. They currently technically dominate that market, and are growing market share as fast as they can. Business desktops (as mentioned) are probably number 2.
Business laptops 2nd, certainly. (If all of the various server segments, such as hyperscalers, HPC, database, training/ inferencing, edge/ telecommunications, etc. pp. are implied in 1st.)
Zen 5 cores main selling point is the supreme single thread performance. Where is it?
In server workloads which don't exercise certain accelerators which some Intel SKUs have, Turin's (still unknown) single thread performance will certainly be way up at the industry's very top. However, single thread performance is a main selling point only in some of the segments of datacenter. (High frequency trading, per-core software license shenanigans...) Generally more important performance related selling points are power efficiency, and per socket/ node/ height unit/ rack performance.
 
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yuri69

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Jul 16, 2013
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They took almost 2 years from Z4 for these gains is the problem.
If Z6 takes 2 years for 10% then someone's lunch is going to get slowly shared with everyone
AMD has been using phrases like "firing on all cylinders" or "the best is yet to come". But in reality the release gap widened considerably after Zen 3 and the architectural gains also lowered.

Zen 6 having a ~10% IPC gain in 2026 would be a continuation of that trend.
 
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