PS5 Die Shot has been revealed

From the discussions I'm seeing on more technical forums I think that I get what happened.
Both Microsoft and Sony have strong concerns about heat and prevent throttle, each one addressed this issue in different ways. Microsoft's way is more simpler, just put a bigger cooler. Both solutions work but are fundamentally different, Microsoft way deals with the heat after it's generated, Sony tries to prevent the heat from being generated.

This is the FPU is the single greatest source of heat, so Sony went with a smaller FPU to have a CPU that generates less heat, used less power, don't throttle and is easier to cool.
Form analysing the die shots people are concluding that Sony made AMD remove the FADD from the FPU leaving only the FMAC. The FPU can still do FADD math at native 256bits, only on more cycles than the dedicated FDAA unit. So the FPU works the same, with a bit less throughput, and do this generating much less heat and using much less power to prevent the CPU from downclocking when stressed. This is really interesting!

Edit: contrary to what some say, the CPU may be better than GPU in doing physics if the right engines are used, because today's CPU have strong vector capabilities. With a 256bits FPU the CPU can calculate the physics of 8 objects with 32bits precision every 5 cycles (the number of cycles the Zen 2's FPU takes to do FADD math at the FMAC, some say).
Edit2: and the SeX would be able to do 8 additional calculations simultaneously every 3 cycles while turning into a blast furnace.
But is the option of the Tempest Engine - which should be far better than either CPU/GPU physics acceleration - maybe part of the answer

I'd be thinking that if you can offload to a far more effective device for physics then you might make the argument to cut functionality to the minimum on the CPU, both encouraging use of the Tempest engine, and get more performance for proportionally less power draw, and less heat.
 
there is not a single one amd rdna2 6xxxx card with with a narrow design.
The rx 6800 game clock of 1815Ghz and 60 cu's is basically in line with the xsx with it's 1825ghz (constant) and 52cu's
the 6800xt have 72 CU's ....etc etc so no absolutely their design is more in line with what we see with the wider xsx design. Certainly both have the boost clock in the 6800 reaching 2000+ ghz But we've always had reduced clocks on consoles to maintain reasonable temperatures, The classification as not "fast" is more given by the sony counterpart that from the it's own real speed, because it is actually "fast and wide" as every other rdna2 gpu. Imagine the jump in speed considering that ps4 pro had a clock of 911Mhz the One X 1172Ghz while a Vega 56 1471Ghz and the little one GPU rdna1 5xxx starts with a game clock of 1670 Ghz. The truth here is that the ps5 has demonstrated innovation getting very close to the speed of the desktop versions, even though it's too early to assess the real benefits (I would love to see a benchmark between two hypothetical ps5 with and without active variable clock).
But to conclude, all gpu manufacturers prefer the advantage of having many CU's which increase the parallelism.
Ok, soon to be released RDNA 2 cards. I think the RX 6700 and lower would fit narrow and fast when they launch. Unless AMD decided to not clock them as high as the rest.
 
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Scaling down is what some devs have been attempting in these latest 9th-gen ports. The result has been the SeriesS version lacking features like raytracing altogether.
When actual 9th-gen engines start appearing that use raytracing for e.g. shadows without a fallback to traditional shadowmaps, how are they going to solve that on the SeriesS? The only way is to develop for the SeriesS first, SeriesX second.




Yes, but that always happens. Cores maintain coherency (i.e. checking each others' calculation results) by snooping through the others' last level cache (LLC). The LLC in Jaguar was the L2 that served 4-core blocks, and in Zen1/2/3 the LLC is the L3.
If the cores couldn't access the instruction + data in each others' LLC, then they'd need to maintain coherency through the RAM, which is very slow in comparison.

The big difference between "unified cache" (Zen3) and two blocks of cache that can be accessed by cores that are external to that complex (Zen2) is the number of cycles needed to access the cache on that "far end" CPU core.
I don't know the numbers so this is just an example, but if in Zen3 it takes 8 cycles to access any part of the unified L3, in Zen2 it takes 8 cycles to access the L3 in its own CCX, but 40 cycles to access the L3 in the other CCX.
This makes a sizeable difference in gaming performance when the GPU isn't a bottleneck (usually high framerates), and it's a good part of the reason why Zen3 is so good for games.



There are two blocks of L3 seen in the PS5's die shot (one for each CCX), but it's also true that both CCXs are close together, and there's a relatively large unidentified space between the CPU and GPU blocks (which could be just glue logic).
It could be that the PS5's custom Zen2 has specific optimizations for reducing the cycles for inter-CCX L3 accesses, to the point where it behaves closer to an unified L3 than a separate one.

Something is responsible for the PS5 getting consistently better performance at framerate levels where the CPU is usually a bottleneck (120FPS modes), despite the SeriesX getting a non-variable higher clockrate and a full fledged Zen2 FPU.
And I don't buy the "current devkits are bad but future ones will bring the magic sauce" theories for the SeriesX. I expect both consoles to mature at parallel levels.
what you are telling here makes alot of sense - why would they focus so much on eliminating all sorts of bottlenecks just to negate all of this effort by circumcising their CPU in a big way.

their entire focus must have been to go high instead of wide and making absolutly goddamn sure they get the absolut 100% out of that 36CUs.
It was all in the Road to PS5 Talk.
That slide alone tells about their priority of I/O andeliminating bottlenecks:

ps5-slides-08b-1440x810.png


The size difference of that I/O Complex Box is huge in comparision to their CPU and GPU. Wich further underlines their Prioritys..
 
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Ok, soon to be released RDNA 2 cards. I think the RX 6700 and lower would fit narrow and fast when they launch. Unless AMD decided to not clock them as high as the rest.
well honestly the 6700 is an entry level card amd design for his best card is fast and very wide
 
what you are telling here makes alot of sense - why would they focus so much on eliminating all sorts of bottlenecks just to negate all of this effort by circumcising their CPU in a big way.

their entire focus must have been to go high instead of wide and making absolutly goddamn sure they get the absolut 100% out of that 36CUs.
It was all in the Road to PS5 Talk.
That slide alone tells about their priority of I/O andeliminating bottlenecks:

ps5-slides-08b-1440x810.png


The size difference of that I/O Complex Box is huge in comparision to their CPU and GPU. Wich further underlines their Prioritys..

BuT gIThUb proVEd tHaT SonY panIcKEd aND JuSt oVeRCloCked WhEn thEy SAw thE PoWah oF tHe xSEX 🤪
 
there is not a single one amd rdna2 6xxxx card with with a narrow design.
The rx 6800 game clock of 1815Ghz and 60 cu's is basically in line with the xsx with it's 1825ghz (constant) and 52cu's
the 6800xt have 72 CU's ....etc etc so no absolutely their design is more in line with what we see with the wider xsx design. Certainly both have the boost clock in the 6800 reaching 2000+ ghz But we've always had reduced clocks on consoles to maintain reasonable temperatures, The classification as not "fast" is more given by the sony counterpart that from the it's own real speed, because it is actually "fast and wide" as every other rdna2 gpu. Imagine the jump in speed considering that ps4 pro had a clock of 911Mhz the One X 1172Ghz while a Vega 56 1471Ghz and the little one GPU rdna1 5xxx starts with a game clock of 1670 Ghz. The truth here is that the ps5 has demonstrated innovation getting very close to the speed of the desktop versions, even though it's too early to assess the real benefits (I would love to see a benchmark between two hypothetical ps5 with and without active variable clock).
But to conclude, all gpu manufacturers prefer the advantage of having many CU's which increase the parallelism.
No, far from it. Those cards have 4 Shader engines and 128rops while XSX with 52CUs has 2 shader engines and 64 rops. XSX is another kind of wide and slow, a unique kind not seen in any RDNA GPUs.
 
The size difference of that I/O Complex Box is huge in comparision to their CPU and GPU. Wich further underlines their Prioritys..

More like, they are really excited about it and wanted to brag :) But you are right, they really put effort into that part of the equation.
 
Is that why Actual Developers have praised the PS5 design eh?


Andrea Pessino

@AndreaPessino

Dollar bet: within a year from its launch gamers will fully appreciate that the PlayStation 5 is one of the most revolutionary, inspired home consoles ever designed, and will feel silly for having spent energy arguing about "teraflops" and other similarly misunderstood specs.

😘

6:36 PM · Mar 19, 2020

You need to stop your downplaying of the PS5 and move on...........

just please man, everyone knows that the perfomance measurement of a console are not ONLY teraflops ... but you know? specifications and real hw in it always speak for itself and since Sony has hidden most of it, we are here for this reason. Finally we will can have a better idea of what the ps5 could do and what was pure fantasy (till now there was a lots of it with the red gaming guy)
As for Pessino as much as I respect him, a console as revolutionary as he seems to mean does not render with 40 +% less resolution than its direct rival in less than 2 months after release and when it "wins" it makes for 2 or 3 frames. Ready at dawn are company that made sony exclusives and that they will probably continue to do so. And after seeing the dieshot on one on the entire web is seeing anything so revolutionary ... It's just pr.


On the contrary we have famous outlet saying the opposite after the die shot Today Tom's Hardware italy has released 1 article where it says that the ps5 would seem be not really rdna2
 
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No, far from it. Those cards have 4 Shader engines and 128rops while XSX with 52CUs has 2 shader engines and 64 rops. XSX is another kind of wide and slow, a unique kind not seen in any RDNA GPUs.
whatever you want but no one in the gpu industry go fast and narrow for a reason parallelism >>hard>> clock speed
 
Scaling down is what some devs have been attempting in these latest 9th-gen ports. The result has been the SeriesS version lacking features like raytracing altogether.
When actual 9th-gen engines start appearing that use raytracing for e.g. shadows without a fallback to traditional shadowmaps, how are they going to solve that on the SeriesS? The only way is to develop for the SeriesS first, SeriesX second.




Yes, but that always happens. Cores maintain coherency (i.e. checking each others' calculation results) by snooping through the others' last level cache (LLC). The LLC in Jaguar was the L2 that served 4-core blocks, and in Zen1/2/3 the LLC is the L3.
If the cores couldn't access the instruction + data in each others' LLC, then they'd need to maintain coherency through the RAM, which is very slow in comparison.

The big difference between "unified cache" (Zen3) and two blocks of cache that can be accessed by cores that are external to that complex (Zen2) is the number of cycles needed to access the cache on that "far end" CPU core.
I don't know the numbers so this is just an example, but if in Zen3 it takes 8 cycles to access any part of the unified L3, in Zen2 it takes 8 cycles to access the L3 in its own CCX, but 40 cycles to access the L3 in the other CCX.
This makes a sizeable difference in gaming performance when the GPU isn't a bottleneck (usually high framerates), and it's a good part of the reason why Zen3 is so good for games.



There are two blocks of L3 seen in the PS5's die shot (one for each CCX), but it's also true that both CCXs are close together, and there's a relatively large unidentified space between the CPU and GPU blocks (which could be just glue logic).
It could be that the PS5's custom Zen2 has specific optimizations for reducing the cycles for inter-CCX L3 accesses, to the point where it behaves closer to an unified L3 than a separate one.

Something is responsible for the PS5 getting consistently better performance at framerate levels where the CPU is usually a bottleneck (120FPS modes), despite the SeriesX getting a non-variable higher clockrate and a full fledged Zen2 FPU.
And I don't buy the "current devkits are bad but future ones will bring the magic sauce" theories for the SeriesX. I expect both consoles to mature at parallel levels.
Thanks for the knowledge, we needed it.

Maybe these lines are connecting the Caches.
They seem to end at the same points at the Caches.
zpnIWkE.jpg
 
Can I say the same thing about a certain, very much talked about, youtube team that focus on gaming? Because if the level of discussion is this, then I am outofhere.



Who?
oops sorry I remembered wrong, it was Tom's Hw italy

 
Xbox Series X|S is also still using the old Xbox One Southbridge, while the PS5 has that stuff on the SOC die area.
Which is only for controlling ports, not sure why is that something note-worthy. SSD is dirrectly plugged into PCie of APU
 
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But is the option of the Tempest Engine - which should be far better than either CPU/GPU physics acceleration - maybe part of the answer

I'd be thinking that if you can offload to a far more effective device for physics then you might make the argument to cut functionality to the minimum on the CPU, both encouraging use of the Tempest engine, and get more performance for proportionally less power draw, and less heat.

Tempest is for SOUND.

People, understand this, the CPU can be as good as a GPU at performing these tasks, specially nowadays. In the past GPUs were better because of the architectures available, with time this changed, CPU architectures much more capable of doing tasks that were previously better done on a GPU became available and with software to exploit it.
 
Tempest is for SOUND.

People, understand this, the CPU can be as good as a GPU at performing these tasks, specially nowadays. In the past GPUs were better because of the architectures available, with time this changed, CPU architectures much more capable of doing tasks that were previously better done on a GPU became available and with software to exploit it.
I believe tempest is general in purpose as a stream processors. Makes perfect sense for sound, but not limited to it. Sony SDK likely has sound libraries executing on tempest, but devs can probably get in there to do whatever they deem fit.
 
I believe tempest is general in purpose as a stream processors. Makes perfect sense for sound, but not limited to it. Sony SDK likely has sound libraries executing on tempest, but devs can probably get in there to do whatever they deem fit.
Yes devs can do whatever they want with tempest (the part not dedicated to system sound).

In fact with the Tempest Engine we've even got enough power that we can allocate some to the games to the extent that games want to make use of Convolution Reverb and other algorithms that are either computationally expensive or need high bandwidth.

 
what you are telling here makes alot of sense - why would they focus so much on eliminating all sorts of bottlenecks just to negate all of this effort by circumcising their CPU in a big way.

their entire focus must have been to go high instead of wide and making absolutly goddamn sure they get the absolut 100% out of that 36CUs.
It was all in the Road to PS5 Talk.
That slide alone tells about their priority of I/O andeliminating bottlenecks:

ps5-slides-08b-1440x810.png


The size difference of that I/O Complex Box is huge in comparision to their CPU and GPU. Wich further underlines their Prioritys..
LMFAO - wow - cmon - seriously?

Are we now to the point of discussing architecture design based on referencing the size of a diagram on a PowerPoint presentation?

Extending this theory - Should we now expect the size of the I/O complex on the die to be 2-3x larger than the CPU and GPU?
 
LMFAO - wow - cmon - seriously?

Are we now to the point of discussing architecture design based on referencing the size of a diagram on a PowerPoint presentation?

Extending this theory - Should we now expect the size of the I/O complex on the die to be 2-3x larger than the CPU and GPU?
you did not understand what i was saying. I was not trying to say that the physical I/O Area on the DIE is greater than CPU and GPU - we know that this is not the case. I just pointed out that they tryd to underline their emphasis on I/O by creating this slide the way they did.
 
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Thanks for the knowledge, we needed it.

Maybe these lines are connecting the Caches.
They seem to end at the same points at the Caches.
zpnIWkE.jpg
It is because the lines were done via Photoshop it is not like that in the silicon... the draw is hiding a lot.

Here you can see all the interconections.

50947289326_07f4ba7345_o.jpg
 
oops sorry I remembered wrong, it was Tom's Hw italy

The article says it is not 100% RDNA2 because there is no Infinite Cache.

"making the console not fully RDNA 2 as previously thought.
What is missing from the appeal within PS5, it would seem to be the Infinity Cache..."

Do you know any other console that doesn't have Infinite Cache?
 
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The article says it is not 100% RDNA2 because there is no Infinite Cache.
Do you know any other console that doesn't have Infinite Cache?
i linked this article to make people understand the bad light that baseless speculation and fake insider can do. This article would never be done if someone didnt have pushed the narrative of that IC and fanboy followed. For the average joe who read just the title and don't know what rdna2 is and even less what is the IC, he will only understand that the article has a negative connotation and the ps5 is missing something. when we know that's not the case
 
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i linked this article to make people understand the bad light that baseless speculation and fake insider can do. This article would never be done if someone didnt have pushed the narrative of that IC and fanboy followed.
Articles always existed no matter fanboys.
I see no issue with the article... nothing written there is actually false.
How Xbox fanboys tries to spin it is what we called FUD.

"Oh Toms Hardware is calling PS5 not RDNA 2"
But if you read it you will see they did not say anything close to that.

And I agree with the article claim... PS5 is not fully RDNA 2 and Series either but I'm saying that about Series X since the AMD RDNA 2 reveal while Xbox fans keep "MS told us it is 100% RDNA 2 read here".

There is not fully RDNA 2 if you lack key features.
 
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Articles always existed no matter fanboys.
I see no issue with the article... nothing written there is actually false.
How Xbox fanboys tries to spin it is what we called FUD.
why Tom's hw didn't bothered to write an article saying the xbox isn't rdna2 for the same exact reason ,? maybe maybe because no one made so much rumor and rumor about it having a special sauce in the IC for a year like happened with ps5? maybe eh just maybe not sure about it
The problem isn't the article saying the truth in fact
 
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why Tom's hw didn't bothered to write an article saying the xbox isn't rdna2 for the same exact reason ,? maybe maybe because no one made so much rumor about it having a special sauce in the IC like happened with ps5? maybe eh just maybe not sure about it
The problem isn't the article saying the truth in fact
Because there is no FUD about Xbox being or not RDNA 2... there is FUD about PS5 being RDNA2.
Xbox fans created a whole narrative that people keep asking on twitter about these FUD on their favorite tech sites... the tech sites tries to write article about what their fans are asking.

It is basically what happened (and is happening) with the extreme right politics in all the world... create news (not matter if true or false) trashing the opposition and disseminate in social networks.

The biggest issue is that a lie will only live for some time and the backslash become big when the more the lie keep ruling.
We already see that with Series X... big backslash from what they MS and fanbase created.
 
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I believe tempest is general in purpose as a stream processors. Makes perfect sense for sound, but not limited to it. Sony SDK likely has sound libraries executing on tempest, but devs can probably get in there to do whatever they deem fit.

But dude, DUDE!
Sony wanted to put some dedicated hardware for sound and named it Tempest. What's the purpose of putting hardware for sound and not use it to process the sound?

Games are more GPU bound, everything is being offloaded to co-processors, why we need the CPU? Fuck it! Let's get rid of CPU! Is that what you all want to see?
The CPU is still important and have it's part to play.
 
The article says it is not 100% RDNA2 because there is no Infinite Cache.

"making the console not fully RDNA 2 as previously thought.
What is missing from the appeal within PS5, it would seem to be the Infinity Cache..."

Do you know any other console that doesn't have Infinite Cache?
Did Eurogamer Italy mention this very mysterious other console in the article?

Edit: Nvm. Different site.
 
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It is because the lines were done via Photoshop it is not like that in the silicon... the draw is hiding a lot.

Here you can see all the interconections.

50947289326_07f4ba7345_o.jpg
The lines are still there.
Just look carefully and you'll see them and they stop the same places too.
It's just more detailed now.
JCCsaoz.jpg

Plus, now that it's more detailed.
What's the yellow box, is that Infinity Cache between the Memory Interface?
 
Did Eurogamer Italy mention this very mysterious other console in the article?
It is Toms Hardware Italy and the article is about PS5 SoC pics.

What they say about Series X|S is the SoC pics confirms that Sony and MS took different paths with their hardware design
 
You can see that part in detail here:
It does not really seem connected to the ZEN CCX at all:

XwPFhYL.png

The lines are still there.
Just look carefully and you'll see them and they stop the same places too.
It's just more detailed now.
JCCsaoz.jpg

Plus, now that it's more detailed.
What's the yellow box, is that Infinity Cache between the Memory Interface?
I misundestood the lines you guys were talking about... I thought about the CPU Interconnections and not the lines between CPU and GPU.
 
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It is Toms Hardware Italy and the article is about PS5 SoC pics.

What they say about Series X|S is the SoC pics confirms that Sony and MS took different paths with their hardware design
My mistake, thanks. I thought it was Eurogamer Italy because of an earlier post mentioning something similar. 👍
 
you did not understand what i was saying. I was not trying to say that the physical I/O Area on the DIE is greater than CPU and GPU - we know that this is not the case. I just pointed out that they tryd to underline their emphasis on I/O by creating this slide the way they did.
Incorrect - I absolutely and fully understood what you said.. and to be clear, I'm not discounting the point you were trying to make (that Sony invested significant time and effort to address I/O performance bottlenecks with respect to their target end-state architectural design of the PS5).

However, referencing the size of a diagram on a power point as justification in support of that statement isn't valid.. the size of the diagram is irrelevant.

I/O wasn't the only item in the overall design that Cerny and team focused on...
 
Ready at dawn are company that made sony exclusives and that they will probably continue to do so. And after seeing the dieshot on one on the entire web is seeing anything so revolutionary ... It's just pr.


On the contrary we have famous outlet saying the opposite after the die shot Today Tom's Hardware italy has released 1 article where it says that the ps5 would seem be not really rdna2

Exclusives for PS5 you say?...
Do you know where Ready At Down is now?

So, PS5 is not really RDNA 2.

well I'll trust Locuza whatever he find out on twitter. He never wrong

But you trust Locuza and he is never wrong. OK then!

Because there is no FUD about Xbox being or not RDNA 2... there is FUD about PS5 being RDNA2.
Xbox fans created a whole narrative that people keep asking on twitter about these FUD on their favorite tech sites... the tech sites tries to write article about what their fans are asking.

Yep. But check this out

Locuza :

Now the PS5 MAY really not integrate all features of the RDNA 2 hardware, but is Microsoft really using the most advanced technology and are there no hardware differences between Xbox Series X/S and RDNA 2 GPUs from AMD? The answer to that is..... NO!

tenor.gif


Can't stop laughing 😂.

Timestamped 5:08


 
Exclusives for PS5 you say?...
Do you know where Ready At Down is now?

So, PS5 is not really RDNA 2.



But you trust Locuza and he is never wrong. OK then!



Yep. But check this out

Locuza :



tenor.gif


Can't stop laughing 😂.

Timestamped 5:08


Yeap he hinted some silicon parts in Series X are very old... perhaps before RDNA.
I believe both are a mix.

But MS keep pushing the 100% RDNA 2 marketing even when it lacks key features of what make RDNA 2.
MS PR marketing is based in their fanboys crowd like Dealer and Tim Dog for example.
They used to support Crapgamer but well that guy is really shameful and changed sides.

Next Locuza video will really be interesting.
 
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Yeap he hinted some silicon parts in Series X are very old... perhaps before RDNA.
I believe both are a mix.

But MS keep pushing the 100% RDNA 2 marketing even when it lacks key features of what make RDNA 2.

Neither the PS5 nor the XSX are built like RDNA2 cards for PC. Both of them use RDNA2 as a base but each manufacturer configured them to their needs.

This isn't the same situation where one console uses GCN as a base and the other uses RDNA2 as a base for example.
 
They used to support Crapgamer but well that guy is really shameful and changed sides.

This guy sometimes pops up on YouTube when looking for PS news. I somehow like his tone/voice, but he is clearly biased towards Sony in my opinion. So he was a MS guy in the he past? Interesting.
 
This guy sometimes pops up on YouTube when looking for PS news. I somehow like his tone/voice, but he is clearly biased towards Sony in my opinion. So he was a MS guy in the he past? Interesting.
He was one of the biggest hardware Xbox fans... Uncle Phil even give him invites to E3 and engaged with on twitter like BFF.
With PS5 / Series X he changed side.

PS fans were not happy with him in the community because he is very toxic.

I believe his change started around 2019.

 
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