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

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Timorous

Golden Member
Oct 27, 2008
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It's information overload lately.

But even if you average the 5-10% IPC and the 50-100% IPC, it'll arrive at ~50% IPC improvement. Then add the MT perf increase higher than ST perf increase claim on top. I'll be willing to pay the $999 that has been promised by some in this thread for the top 16C SKU in that case.


I'm not making any predictions. I'm an observer. But I'm missing predictions from several of the main leakers / self claimed insiders in this thread, who has been most vocal about their claims, in that spreadsheet. Would be nice if they could add their concrete numbers to the spreadsheet, for clarity and accountability.

if you are talking about my daft comments I am just being silly with Igor. You don't have to be serious all the time.
 

Fjodor2001

Diamond Member
Feb 6, 2010
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I doubt he typed his alias there (if that even is his alias). 32% is too low. Could be one of the lowest gains of Zen 5 in a benchmark though (when it is completely crippled in terms of memory latency and bandwidth).
Spreadsheet says "IPC % over Zen 4" and for row 7 "32%". Should it not be interpreted as average IPC increase? Otherwise I think there should be a comment column specifying a specific benchmark, if it only applies to that.

Also, row 7 says Fmax is 5.6 GHz. That would mean clock regression, which is unexpected. Lately claims have been made of a single digit frequency increase instead, for Zen5 compared to Zen4.
 
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Thibsie

Senior member
Apr 25, 2017
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And
Are you taking the people responding to Igor "Voice in my head" Kavinski seriously? Or Hans "RDNA3 uses inferior silicon" Gruber?

Then you must also take the people saying clock regression with 5-10% IPC seriously.

The aggregate spreadsheet, to which I asked you to add your predictions numerous times but remains absent, still has an average of 25% (a bit too high in my opinion)
I could add some.
 
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StefanR5R

Elite Member
Dec 10, 2016
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Spreadsheet says "IPC % over Zen 4" [...]. Should it not be interpreted as average IPC increase? Otherwise I think there should be a comment column specifying a specific benchmark, if it only applies to that.
"I.P.C." is always an average. It's just that the sample from which this average is obtained can consist of a single executable and input data, or multiple of those.

Regardless, I agree that without specifying this sample, these "I.P.C." figures are completely meaningless. Some don't specify it because they have no idea what they are talking about, others don't because they prefer to remain vague.
 

CouncilorIrissa

Senior member
Jul 28, 2023
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"I.P.C." is always an average. It's just that the sample from which this average is obtained can consist of a single executable and input data, or multiple of those.

Regardless, I agree that without specifying this sample, these "I.P.C." figures are completely meaningless. Some don't specify it because they have no idea what they are talking about, others don't because they prefer to remain vague.
At this point it's well established that AMD themselves always use SPECInt Rate 2017 as a measuring stick for IPC, so whenever we say "IPC" in our predictions we mean "clock-normalised SPECInt Rate 2017 score".
 
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StefanR5R

Elite Member
Dec 10, 2016
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At this point it's well established that AMD themselves always use SPECInt Rate 2017 as a measuring stick for IPC, so whenever we say "IPC" in our predictions we mean "clock-normalised SPECInt Rate 2017 score".
By "we", you don't include the entire AnandTech forum membership (at least the part which involved itself in iso-clock core performance related discussions), do you?

Edit,
without specifying this sample, these "I.P.C." figures are completely meaningless. Some don't specify it because they have no idea what they are talking about, others don't because they prefer to remain vague.
O.K., I did indeed forget to add: …and others don't because they imply IPC = "SPECrate® 2017 Integer iso-clock performance".
 
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Timorous

Golden Member
Oct 27, 2008
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By "we", you don't include the entire AnandTech forum membership (at least the part which involved itself in iso-clock core performance related discussions), do you?

Adroc and Kepler have specifically mentioned spec int 1t 2017.

Others are probably talking generally so will be going by the geomeaned average. Thing is if Zen 3 and Zen 4 are anything to go by then the geomeaned average is just a range of results that fit the SpecINT 2017 NT result so they are kind of one in the same.

Of course the geomeaned average probably won't match the 1t result because it is based on NT.
 

CouncilorIrissa

Senior member
Jul 28, 2023
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By "we", you don't include the entire AnandTech forum membership (at least the part which involved itself in iso-clock core performance related discussions), do you?
Those frequenting this thread.
Look, you can keep being difficult about it, that's not going to change that this topic was discussed multiple times at this point and the outcome of said discussions is always the same.

edit: just because it's wrong to equate the two ("IPC" and score in whatever), does not mean that you'll get people to stop using the former and instead use a much more unwieldy phrase.
 
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eek2121

Diamond Member
Aug 2, 2005
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I wanted to follow up with my earlier comment about why we need to be able to test both accelerated and non-accelerated versions of a workload. Geekbench actually DOES let you disable AVX2 if you run it from a terminal. You can't disable other older instructions, however. AMD somewhat recently gave us the option to disable AVX-512 in the BIOS so at least for that you can simply disable it there.

Without AVX2: 2702/18985 - https://browser.geekbench.com/v6/cpu/6300616
With AVX2: 3022/21627 - https://browser.geekbench.com/v6/cpu/6302655

EDIT: in case someone points out the version difference or date, I did do a run today, but forgot to upload it. It was within margin of error of my other previous results. If people really want to complain, I will rerun in the morning.
EDIT 2: Decided to do a quick run tonight. Just a smidge lower, but these scores vary by a small amount and there is no guarantee my PC was completely idle. URL updated above.

I am working on a benchmark similar to Geekbench (in that it uses similar workloads), but I have no timeline for completion. I'm also thinking about making it open source and cross platform, but we will see. I'm undecided as of yet. I will probably release initial versions for free and decide after. (note I'm NOT trying to pump this project with these posts, my project may ppossibly never see a release due to my ridiculous schedule and ADHD, I'm simply pointing out the need for such a benchmarking tool)

ALL of these instruction sets are dependent not only on the compiler supporting it at all, but also, how good the compiler (or human in the case of something like AVX-512) is at optimizing workloads. It is important to be able to assess core performance without these variables coming into play. A binary from 2003 isn't going to be accelerated with AVX, for example.

Anyway, I'm done with my speech. Carry on! Only a few more days...
 
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CouncilorIrissa

Senior member
Jul 28, 2023
295
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I am working on a benchmark similar to Geekbench (in that it uses similar workloads), but I have no timeline for completion. I'm also thinking about making it open source and cross platform, but we will see. I'm undecided as of yet. I will probably release initial versions for free and decide after. (note I'm NOT trying to pump this project with these posts, my project may ppossibly never see a release due to my ridiculous schedule and ADHD, I'm simply pointing out the need for such a benchmarking tool)
oh snap, we have a productive member of society among us. Rise up, anandtech!
 

StefanR5R

Elite Member
Dec 10, 2016
5,682
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Look, you can keep being difficult about it, that's not going to change that this topic was discussed multiple times at this point and the outcome of said discussions is always the same.
Well, sorry, over all the weird Geekbench and CPU-Z and whatnot discussions here (which I mentally tried to skip but failed to) I did indeed forget that there are people who follow the one convention which you pointed out.
 

Fjodor2001

Diamond Member
Feb 6, 2010
3,922
400
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Since we’ve desparately been looking for leaks days ahead of Computex, here are some:

Zen5 19% faster than Zen4:


Zen5 slower than 14900K in ST perf (which is all that matters to some):

 
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