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

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Hail The Brain Slug

Diamond Member
Oct 10, 2005
3,241
1,674
136
Strix Point is like the top end of that range and higher. Halo's gonna be more than that.
APU only models don't seem like they're going much over that. Anything priced toward $2000+ range is Strix Point + dGPU (4070 tier), so I'd expect strix halo designs to be priced in that area since the dGPU performance should probably be somewhere around 4070 range.
 

dr1337

Senior member
May 25, 2020
385
639
136
Strix Point is like the top end of that range and higher. Halo's gonna be more than that.
I mean maybe $1999 for the 128gb models, $999 for 16gb units. With all sorts of various form factor pricing within.

I mean when I look at amazon, 4080 laptops are under 2k, thats a lot silicon you get on one device, I see no reason to assume they're gonna price the chip so high when it really shouldn't be too big area wise at the end. 2x CPU chiplets and a IO/GPU chiplet the size of a midrange GPU isn't a crazy cost factor to AMD.

Its like, they could price the 9950x at $999, but they won't because they know it wouldn't sell. Why would AMD or the OEMs try to sell 4060 level performance at 4090 prices? they wouldn't.

Also strix point is definitely the successor to phoenix, as time goes on its gonna get quite cheap.
 

inquiss

Member
Oct 13, 2010
89
160
106
I mean maybe $1999 for the 128gb models, $999 for 16gb units. With all sorts of various form factor pricing within.

I mean when I look at amazon, 4080 laptops are under 2k, thats a lot silicon you get on one device, I see no reason to assume they're gonna price the chip so high when it really shouldn't be too big area wise at the end. 2x CPU chiplets and a IO/GPU chiplet the size of a midrange GPU isn't a crazy cost factor to AMD.

Its like, they could price the 9950x at $999, but they won't because they know it wouldn't sell. Why would AMD or the OEMs try to sell 4060 level performance at 4090 prices? they wouldn't.

Also strix point is definitely the successor to phoenix, as time goes on its gonna get quite cheap.
Maybe, krk is the cheap part though? To me I'd prefer strix GPU less, the point of it for me is that it has very decent GPU performance and stellar CPU performance with decent battery. Why bother with the GPU, I want powerful glue though (in the laptop space, it's pointless in desktop)
 

CouncilorIrissa

Senior member
Jul 28, 2023
297
1,040
96
Another GB6 ES run.
"processor_frequency": {
"frequencies": [
4822,
4824,
4824,
4825,
4808,
4824,
4824,
4815,
4814,
4824,
4824,
4819,
4696,
4825,
4826,
4827,
4830,
4823,
4814,
4828,
4830,
4830,
4826,
4831,
4829,
4830,
4828,
4830,
4830,
4828,
4829,
4830,
4830,
4829,
4830,
4830,
4741,
4822,
4809,
4824,
4797,
4815,
4823,
4819,
4823,
4810,
4831,
4888,
4952
]
}

Frequency is reported properly this time, so we're looking at production samples to score around 2950-3000, just like Huang said.

So yeah, if you want ST, Apple is still the only way to go.
 
Last edited:

Det0x

Golden Member
Sep 11, 2014
1,054
3,084
136
Kinda strange its only these these laptops scores thats leaking online, Ryzen 9000 series have been out in the wild 2-3 weeks already and so far airtight
Guess they haven't learned that geekbench is a big no no since you dont get a result if score are not uploaded uploaded automatically
(except GB3)
 

DisEnchantment

Golden Member
Mar 3, 2017
1,684
6,227
136
Kinda strange its only these these laptops scores thats leaking online, Ryzen 9000 series have been out in the wild 2-3 weeks already and so far airtight
Guess they haven't learned that geekbench is a big no no since you dont get a result if score are not uploaded uploaded automatically
(except GB3)
DT CPUs remain at AMD, so ASUS could not leak them
 

DisEnchantment

Golden Member
Mar 3, 2017
1,684
6,227
136
Another GB6 ES run.
"processor_frequency": {
"frequencies": [
4822,
4824,
4824,
4825,
4808,
4824,
4824,
4815,
4814,
4824,
4824,
4819,
4696,
4825,
4826,
4827,
4830,
4823,
4814,
4828,
4830,
4830,
4826,
4831,
4829,
4830,
4828,
4830,
4830,
4828,
4829,
4830,
4830,
4829,
4830,
4830,
4741,
4822,
4809,
4824,
4797,
4815,
4823,
4819,
4823,
4810,
4831,
4888,
4952
]
}

Frequency is reported properly this time, so we're looking at production samples to score around 2950-3000, just like Huang said.

So yeah, if you want ST, Apple is still the only way to go.
The gains seems tangible, looking to beat 7950X scores with Strix 5.1G but in the current context not great either.

I think based on David Huangs assessment, some unknowns wrt DT in terms of halved SIMD throughput
There is also the case of the reduced op cache, additionally the compiler patches indicated reduced FADD cycles but seems David is saying increased FADD latencies.

Just scaling the clock would put the GB6 DT scores of ~3500@5.7G without any contributions from the elimination of reduced SIMD throughput.
 

coercitiv

Diamond Member
Jan 24, 2014
6,387
12,812
136
I think based on David Huangs assessment, some unknowns wrt DT in terms of halved SIMD throughput
There is also the case of the reduced op cache, additionally the compiler patches indicated reduced FADD cycles but seems David is saying increased FADD latencies.

Just scaling the clock would put the GB6 DT scores of ~3500@5.7G without any contributions from the elimination of reduced SIMD throughput.
I only superficially followed the discussion about David Huang's posts, and now I realize I may have gotten the wrong impression based on incomplete reading. Assuming David's info is accurate, how many Zen5 cores are there? Are we talking about Zen 5 desktop, Zen 5 mobile, and then two corresponding variants for Zen 5C?

My initial impression was that Zen 5C was the one with reduced SIMD throughput and different cache implementation.
 

Nothingness

Platinum Member
Jul 3, 2013
2,734
1,375
136
I only superficially followed the discussion about David Huang's posts, and now I realize I may have gotten the wrong impression based on incomplete reading. Assuming David's info is accurate, how many Zen5 cores are there? Are we talking about Zen 5 desktop, Zen 5 mobile, and then two corresponding variants for Zen 5C?

My initial impression was that Zen 5C was the one with reduced SIMD throughput and different cache implementation.
For the record, here is the Google translated David's Huang blog page.
Just because I keep on forgetting where it is
 

DisEnchantment

Golden Member
Mar 3, 2017
1,684
6,227
136
My initial impression was that Zen 5C was the one with reduced SIMD throughput and different cache implementation.
I am not a Chinese speaker so Google Translate could have failed me

It seems both the Mobile Zen5 and Zen5c have reduced SIMD throughput.

  • CCX0: 4 cores with 16MB L3 cache
    Zen 5 Youth Edition Big Core: Compared with the full version of Zen 5 for desktop/server, its maximum frequency is reduced from 5.7 GHz to 5.1 GHz, SIMD throughput is halved, and the corresponding L1 vector load bandwidth is also halved
  • CCX1: 6 or 8 cores with 8 MB L3 cache
    Zen 5c small core: uses exactly the same microarchitecture as the large core, and continues to reduce the Fmax target at the back-end physical design level to reduce the area, with a frequency not exceeding 4 GHz.
Youth Edition Big core

Reduced op cache is an observation he made, it is unclear if the GNR would also have the same op cache size.
Observable reduction in macro-op cache. Zen 4's throughput drop in the 8-12KB range (corresponding to 4k-6k instructions) is more gradual than Zen 5's, and it is speculated that Zen 5 reduced the macro-op cache to the same 4k instructions as Zen 3.

For this tidbit I hope there is some BIOS option to play around

When the core runs two SMT threads, each can monopolize a decoder so that the x86 decoding throughput limit of the entire core reaches 8 in most cases

I checked the patches, the decreased latency is for something else
 

branch_suggestion

Senior member
Aug 4, 2023
294
630
96
Another GB6 ES run.
"processor_frequency": {
"frequencies": [
4822,
4824,
4824,
4825,
4808,
4824,
4824,
4815,
4814,
4824,
4824,
4819,
4696,
4825,
4826,
4827,
4830,
4823,
4814,
4828,
4830,
4830,
4826,
4831,
4829,
4830,
4828,
4830,
4830,
4828,
4829,
4830,
4830,
4829,
4830,
4830,
4741,
4822,
4809,
4824,
4797,
4815,
4823,
4819,
4823,
4810,
4831,
4888,
4952
]
}

Frequency is reported properly this time, so we're looking at production samples to score around 2950-3000, just like Huang said.

So yeah, if you want ST, Apple is still the only way to go.
Yeah we know ES perf already.
Retail Si on retail software is what matters, still no good info there.
 

DisEnchantment

Golden Member
Mar 3, 2017
1,684
6,227
136
It seems mobile gets halved SIMD throughput which means equal to Zen4 more or less.
The throughput of 128/256bit SIMD integer addition operations is halved compared to Zen 4, but 512bit remains unchanged. It is speculated that this problem only exists on the Zen 5 core with halved SIMD, which may be related to port allocation;
This is his observation
 

poke01

Golden Member
Mar 8, 2022
1,384
1,600
106
I think Zen 5 X3D chips is where the magic is this gen for desktop.

AMD has a found a gold mine with V-cache. DIY is mostly gaming anyway. I also do think AM5 is better as it will get Zen 6 where as LGA 1851 is looking like its getting only Arrow lake and Arrow refresh.
 

CouncilorIrissa

Senior member
Jul 28, 2023
297
1,040
96
Yeah we know ES perf already.
Retail Si on retail software is what matters, still no good info there.
Individual subtests are pretty consistent with a non-ES run from a few weeks ago.

Comparing that 5.1GHz Strix ST result to a random Hawk Point@5.1GHz doesn't look mighty impressive:


Is this fine? Different TDPs shouldn't matter for ST, right?
STX is running at 4.85 GHz. But you're right in the sense that it looks mid.
 

DisEnchantment

Golden Member
Mar 3, 2017
1,684
6,227
136

CouncilorIrissa

Senior member
Jul 28, 2023
297
1,040
96
What are the frequencies of this one
browser.geekbench.com/v6/cpu/6418984

I don't have GB acct
I've linked this a few pages ago.

"processor_frequency": {
"frequencies": [
3662,
3673,
3668,
3649,
3652,
3653,
3652,
3650,
3664,
3665,
3545,
3642,
3597,
3655,
3659,
3671,
3672,
3662,
3672,
3667,
3627,
3664,
3659,
3658,
3661,
3667,
3666,
3664,
3649,
3660,
3605,
3665,
3647,
3662,
3667,
3665,
3657
]
},
 
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