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AMD Zen 5 rumours

How does a CPU get bottlenecked if all threads are below 99% usage though? Are there any videos showing a 7600 with any thread running at 99%? Until I see this I'm still on the 6 core train with 7600 or 8600 next year.

AMD has made it difficult to find things due to having a CPU and GPU with the same name.
I'd say the real answer is if you do see any issues just turn the odd setting down a notch. I'm sitting it out on my 7600 until the next X3D chip has settled down in price.
 
How does a CPU get bottlenecked if all threads are below 99% usage though? Are there any videos showing a 7600 with any thread running at 99%? Until I see this I'm still on the 6 core train with 7600 or 8600 next year.

AMD has made it difficult to find things due to having a CPU and GPU with the same name.
It's called thread balancing, just because a Core doesn't show as being 100% utilized doesn't mean it's not bottlenecking. You can easily test it just by - underclocking or overclocking. If you get more / less performance, then there you have it, you are running into a cpu bottleneck.
 
So there is no bottlenecking these graphs below? Just RT benchmark graphs? Which I am yet to see.

 
So there is no bottlenecking these graphs below? Just RT benchmark graphs? Which I am yet to see.

Well, Im not really desperate to convince you, you do you, but check the video below. It's in tom's dinner area, look at the load on 16 cores. Now imagine what happens when you only get 6. The framerate drops to below 60 in this area with a 7600 but whatever, you don't have to believe me

 
I'd say the real answer is if you do see any issues just turn the odd setting down a notch. I'm sitting it out on my 7600 until the next X3D chip has settled down in price.

That’s probably a sensible way to look at things for a system that’s main use is gaming. Stay a hardware generation behind and save a fortune. As you say, you’re only maybe sacrificing a few settings and it’s probably indistinguishable anyway.
 
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Well, Im not really desperate to convince you, you do you, but check the video below. It's in tom's dinner area, look at the load on 16 cores. Now imagine what happens when you only get 6. The framerate drops to below 60 in this area with a 7600 but whatever, you don't have to believe me


No, same. I'd like a 7700 - if I can justify it.

Video above shows 7600 handling Cyberpunk RT fine @ 1440p, but there are no doubt heavier parts of the game and that drive around seems to be missing err all cars and people.
 

No, same. I'd like a 7700 - if I can justify it.

Video above shows 7600 handling Cyberpunk RT fine @ 1440p, but there are no doubt heavier parts of the game and that drive around seems to be missing err all cars and people.
Lol, in the video he is playing at 30-35 fps, sure, if you want to play at those framerates yeah, 6 cores are more than fine.. You can probably even get away with 4.

And yeah, city looks very empty, wtf did he do?
 
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That’s probably a sensible way to look at things for a system that’s main use is gaming. Stay a hardware generation behind and save a fortune. As you say, you’re only maybe sacrificing a few settings and it’s probably indistinguishable anyway.
You've summed up my new strategy ;) I think that way you can stay current, have most of the bugs ironed out and not pay the FOMO tax
 
Lol, in the video he is playing at 30-35 fps, sure, if you want to play at those framerates yeah, 6 cores are more than fine.. You can probably even get away with 4.

And yeah, city looks very empty, wtf did he do?
Well I don't know what RT framerates are supposed to be, I'd be playing with path tracing and DLSS, but I'd need a more playable framerate so that might not be for a while.

I did notice a core reach 99% in Spiderman RT though :) but if Zen 5 gets the apparent 20% IPC uplift then that should be fine / back to 8600 / 6 cores.

If however something like Starfield is a) good and b) needs 8 cores then I'll be all over the 8700, probably.
 
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I'm very interested in what kind of design they will use. Zen 2, Zen 3, and Zen 4 employ a very similar design where the memory controller is located in the middle, with chiplets positioned next to it. Although this design gives them an advantage over Intel, it has its drawbacks, such as relatively high latency. I assume that due to the distance, the memory controller cannot operate at very high speeds. Can they bring the chiplets closer to the controller, and how would that affect latency and the speed of the memory controller?
 
I'm very interested in what kind of design they will use
Don't expect any major design change.

Memory controller is rumored to be refreshed to support higher speeds than current DDR5-6400, but thats about it.
Infinity fabric could get faster and/or wider
Both would improve latency a little.

But no physical layout change
 
They will definitely have to improve the Infinity Fabric if they want to achieve such a significant performance leap. The question is how much the current design they have been using for years is a bottleneck for such a performance jump. Will they need to make drastic changes in order to more easily achieve all of this?
 
They will definitely have to improve the Infinity Fabric if they want to achieve such a significant performance leap. The question is how much the current design they have been using for years is a bottleneck for such a performance jump. Will they need to make drastic changes in order to more easily achieve all of this?
Massive amounts of cache most likely and also L4 like Intel is planning.
 
No cut down cores/e-cores for Ryzen 8000 series desktop CPUs confirmed:


They say that the scheduling between larger and smaller cores can be tricky...

Max core count will be 16, still on track for 2024 release.

Might see e-core like cores used in lower power devices, maybe laptops? Seems appropriate.
 
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Some strange answers there

Like AMD saying they'd like to offer more than 16 cores for Ryzen 8000 desktop, but can't due to memory bandwidth restrictions on the dual channel platform. Mhm... that's odd given 16 cores worked fine on DDR4 with 30-40GB/s and now we have DDR5 doing ~100GB/s and he's saying it's too little bandwidth for increasing core count lmao
 
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They should look at the design flaws with the existing 12/16 core CPUs. The latency problem means that the 8 core Ryzen 7000 series CPUs often outperform those with higher core counts in latency sensitive tasks like games.

Ideally you wouldn't split cores between different CCDs. Just design different types /sizes of single CCD. Performance should scale more linearly with higher core counts.

Higher core counts are not particularly desirable on vcache designs either.
 
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Some strange answers there

Like AMD saying they'd like to offer more than 16 cores for Ryzen 8000 desktop, but can't due to memory bandwidth restrictions on the dual channel platform. Mhm... that's odd given 16 cores worked fine on DDR4 with 30-40GB/s and now we have DDR5 doing ~100GB/s and he's saying it's too little bandwidth for increasing core count lmao

You need to look into how the infinity fabric operates. Moving to 32 cores with the current configuration could essentially halve the performance. That’s my horribly over simplistic assessment.
 
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