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

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AMDK11

Senior member
Jul 15, 2019
341
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There s much more data here, you can check for each software :

Cinebench R15 ST:
Core i7-4770K(Haswell) 3.5-3.9GHz 157p
Ryzen 5 2400G(Zen1) 3.6-3.9GHz 156p

Cinebench R20 ST:
Core i7-4770K(Haswell) 3.5-3.9GHz 365p
Ryzen 5 2400G(Zen1) 3.6-3.9GHz 384p(+5%)


It wasn't even close to IPC testing. It is not known what the clock speed was under the ST load.
Cache L1-I
Haswell 32KB 8-Way 16B/cycle
Zen1 64KB 4-Way 32B/cycle
Decode x86
Haswell 1Complex+3simple
Zen1 4Complex
OP Cache
Haswell 1.5K
Zen1 2K
ROB
Haswell 192
Zen1 192
Scheduler
Haswell unified 60
Zen1 INT6x14 + FP96
PRF
Haswell INT 168 + Vec 168
Zen1 INT 168 + Vec 160
Integer
Haswell 3xFP-ALU + 1xALU + 3xAGU + 1xSD
Zen1 4xALU + 2xAGU
FPU
Haswell 3xFPU/FP 2x256bit/INT 1x256bit
Zen1 4xFPU/FP 2x128bit
Load/Store Buffer
Haswell 72+42
Zen1 72+44
Cache L1-D
Haswell 32KB 8-Way
Zen1 32KB 8-Way
Cache L2
Haswell 256KB 8-Way
Zen1 512KB 8-Way
 
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Abwx

Lifer
Apr 2, 2011
11,161
3,858
136
Cinebench R15 ST:
Core i7-4770K(Haswell) 3.5-3.9GHz 157p
Ryzen 5 2400G(Zen1) 3.6-3.9GHz 156p

Cinebench R20 ST:
Core i7-4770K(Haswell) 3.5-3.9GHz 365p
Ryzen 5 2400G(Zen1) 3.6-3.9GHz 384p(+5%)

Even if AMD does well in CB it s still a bench that greatly favour Intel, think that prior to CB 2024 and starting with CB R15 it use Intel s renderer Embree and is compiled with ICC, it s even designed using Intel s Thread Profiler.

Beside that s ST results, in MT the 2400G has superior SMT yield, so you re just looking at one side of the coin with an Intel favouring bench.

You could use Povray for FP , but in that case this soft doesnt use AVX2 for AMD s CPU, wich reduce the score notably even with their older uarches.
 

AMDK11

Senior member
Jul 15, 2019
341
235
116
Even if AMD does well in CB it s still a bench that greatly favour Intel, think that prior to CB 2024 and starting with CB R15 it use Intel s renderer Embree and is compiled with ICC, it s even designed using Intel s Thread Profiler.

Beside that s ST results, in MT the 2400G has superior SMT yield, so you re just looking at one side of the coin with an Intel favouring bench.

You could use Povray for FP , but in that case this soft doesnt use AVX2 for AMD s CPU, wich reduce the score notably even with their older uarches.
I know that Zen1 has a maximum of 2x128bit. Only Zen2 has 2x256 bit units. Maybe that's where the differences lie, rather than Intel blocking.

Haswell, like subsequent generations, has FP 2x256bit and INT 1x256bit.

One more mistake of mine Haswell is 2013, Broadwell is 2014 and Skylake is 2015. Zen1 is 2017 and has IPC ST lower than Skylake and even lower than Broadwell.
Yes, under certain conditions SMT Zen1 performs better at multi-core scaling.
 

Abwx

Lifer
Apr 2, 2011
11,161
3,858
136
I know that Zen1 has a maximum of 2x128bit. Only Zen2 has 2x256 bit units. Maybe that's where the differences lie, rather than Intel blocking.

Haswell, like subsequent generations, has FP 2x256bit and INT 1x256bit.
Someone in this forum make a test with a recompiled version of povray, actually when
AVX2 is implemented even Zen 1 perform quite better despite the slower exe units since they are 128b, guess that you re making some confusion with SKL wich improved IPC substancially in respect of HW.

Why are you guys bickering about Zen 1 vs Skylake and Haswell, why does it matter in Zen 5 thread? Let's keep this on topic please.

There s few if any news about Zen 5, so that s not much changing the course of the thread.
 

AMDK11

Senior member
Jul 15, 2019
341
235
116
Why are you guys bickering about Zen 1 vs Skylake and Haswell, why does it matter in Zen 5 thread? Let's keep this on topic please.
The discussion unnecessarily went too far beyond the thread about Zen5. From now on I'm sticking to the main thread.

It is important to remember that Zen AMD will not always work so well without errors and difficulties in every generation. Assuming the work went as expected, the average IPC increase is approximately 20%. If the average height is higher, we can only be satisfied

If significant changes translate into an IPC increase of 10-15%, it won't be bad, but certainly below my expectations. We'll see.

Someone in this forum make a test with a recompiled version of povray, actually when
AVX2 is implemented even Zen 1 perform quite better despite the slower exe units since they are 128b, guess that you re making some confusion with SKL wich improved IPC substancially in respect of HW.

Skylake brought further improvements and an increase in IPC. However, Skylake is a strictly AVX512 project and some regressions in IPC can be noted relative to Broadwell.
 
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S'renne

Member
Oct 30, 2022
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Btw, wouldn't Strix Halo be a really premium product for thinner systems then? Even though it is mostly geared for gaming systems. And even with 40CU, wouldn't it still lag behind 6700 XT unless soldered RAM is used for example due to the bandwidth requirements...
 

Glo.

Diamond Member
Apr 25, 2015
5,759
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Btw, wouldn't Strix Halo be a really premium product for thinner systems then? Even though it is mostly geared for gaming systems. And even with 40CU, wouldn't it still lag behind 6700 XT unless soldered RAM is used for example due to the bandwidth requirements...
Depends on the clock speeds.

64 GB systems can also give 16-24 GB VRAM to the GPU portion.

If AMD will be able to get to 3 or above GHz clock speed on the core of the GPU while maintaining 120W TDP for whole package - it should be as fast as 6700 XT desktop.
 

S'renne

Member
Oct 30, 2022
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It may use too much power for the cooling solutions and battery they could/would cram into thin n' light products. Unless they power capped it.
ahh well if so, I'm hoping it doesnt get priced above the RTX xx60/xx70 gaming laptop options, and of course as with AMD supplying enough of them will take so fricking long...
 
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S'renne

Member
Oct 30, 2022
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Depends on the clock speeds.

64 GB systems can also give 16-24 GB VRAM to the GPU portion.

If AMD will be able to get to 3 or above GHz clock speed on the core of the GPU while maintaining 120W TDP for whole package - it should be as fast as 6700 XT desktop.
But wouldn't the memory bandwidth be a bit troubling for Strix Halo unless the SoC also has a large cache or am I misunderstanding something now
 

TESKATLIPOKA

Platinum Member
May 1, 2020
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ahh well if so, I'm hoping it doesnt get priced above the RTX xx60/xx70 gaming laptop options, and of course as with AMD supplying enough of them will take so fricking long...
Sorry to disappoint, but this won't be cheap, but I am not sure what is the price you were thinking about considering those dGPUs have a wide price range depending on what CPU was used with them.
But wouldn't the memory bandwidth be a bit troubling for Strix Halo unless the SoC also has a large cache or am I misunderstanding something now
CPUs will have their own L3 cache and IGP should also use a separate 32MB cache.
 

FlameTail

Diamond Member
Dec 15, 2021
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It may use too much power for the cooling solutions and battery they could/would cram into thin n' light products. Unless they power capped it.
The Apple M Max chip consumes about 100W of power and can sustain it. Strix Halo has a similar 125W TDP. So I guess Strix Halo could fit into the chassis of a Macbook Pro equivalent Windows Laptop.
 

S'renne

Member
Oct 30, 2022
136
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Sorry to disappoint, but this won't be cheap, but I am not sure what is the price you were thinking about considering those dGPUs have a wide price range depending on what CPU was used with them.

CPUs will have their own L3 cache and IGP should also use a separate 32MB cache.
Ah ok, and I know it wont be cheap, just thinking that if the 6700 xt is competitive with the 4060/4060Ti in raster performance, or otherwise the 4060/4070 mobile equivalent, but Strix Halo is priced higher or close to..for example a 4080 Lenovo Legion 7i Pro, that could be problematic, no? Otherwise I'm just saying it would be a bit troubling if the SoC costs more than competitive dGPU options for lower performance....

Edited for probable clarification
 

TESKATLIPOKA

Platinum Member
May 1, 2020
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Ah ok, and I know it wont be cheap, just thinking that if the 6700 xt is competitive with the 4060/4060Ti in raster performance, or otherwise the 4060/4070 mobile equivalent, but Strix Halo is priced higher or close to..for example a 4080 Lenovo Legion 7i Pro, that could be problematic, no? Otherwise I'm just saying it would be a bit troubling if the SoC costs more than competitive dGPU options for lower performance....

Edited for probable clarification
Not sure how high It will be priced, but ~2000euro is pretty likely in my opinion.
You kinda pay not for the IGP but for top CPU performance.
There will most likely be better options from pure FPS/$ ratio.
 
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