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Forums - Sony Discussion - PS5 GDC Reveal and PS5 specs/performance Digital Foundry Video analysis : 3.5 Ghz 8 core Zen 2 CPU along with 10.3 TF RDNA 2 RT capable and 16GB GDDR6 RAM and also super crazy fast 5.5 GB/Second S

 

How do you feel

My brain become bigger su... 21 30.00%
 
I am wet 6 8.57%
 
What did he talked about??? 5 7.14%
 
I want some more info 9 12.86%
 
Total:41
ArchangelMadzz on 18 March 2020
Bristow9091 said:

Okay so if I'm understanding this...

Based purely on numbers alone the PS5 is <15% weaker/slower/whatever than the XSX, but has a much faster SSD which could help close the gap or something? I mean, I was expecting to the XSX to be the more powerful console anyway, which I'm sort of hoping means the PS5 will be the cheaper of the two.

How does this difference in specs/power/whatever look in comparison to the difference between the PS4 Pro and the One X? I'm assuming it's a much smaller gap in power? Either way I'm happy with the level of graphics and such we have now (Still think Horizon looks fucking beautiful, you PC guys are in for a treat!), so all of this doesn't really bother me, I'm just more interested in the games than what's under the hood, although I did find the presentation/talk interesting.

Xbox one X is much more powerful than the pro percentage wise than the XSX is to the PS5. 

And in comparison the XBX didn't perform significantly better. 

This 15% number is thrown around wildly but they're not the same set up. Sony are using less cores and a higher speed, Microsoft are using more at a lower speed. There's many more factors than just tflops. I'm sure the XSX is faster.

We'll see how they compare when digital foundry get hold



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Vodacixi on 18 March 2020

To all that quoted me which are quite a few. If this was especially for professionals, they should have advertised the event as such. You can talk about the tech side of a console without dedicating an hour to explain the ins and outs of SSDs and 3D Sound. That's not of interest for the general public. That's for professionals.



CuCabeludo on 18 March 2020
drkohler said:
CuCabeludo said:

The number of CUs between Ps5 and Series X don't matter because they have different number of transistors per CU. In total PS5 GPU can do 10 teraflops whereas Seriex X can do 12. A roughly theorical 20% difference in power.

wtf was that?

AMD designed the cus, not Sony or MS. I can assure you they didn't design the same work twice just for the giggles. And TFlops come from multiplying the cus with the clock rate....

AMD custom made the GPU and CPU for each console. They only share the same architechture (navi 2/rdna 2). 



taus90 on 18 March 2020

Freaking amazing thank god Sony didnt go all out off the shelf PC part like PS4.. PS5 is still off the shelf but has far more customization then previous gen, and thats what consoles has been all about, I m happy that they sacrificed some performance in order to develop faster SSD, Tempest engine for audio and haptic feedback. Especially 3d audio and haptic wouldnt have traded it for more CU

PS. The way cerny described tempest engine that it could do more than just 3d audio.. I wouldnt been surprised if its used to emulate part of CELL SPE for PS3 simulation.



FloatingWaffles on 18 March 2020
last92 said:
FloatingWaffles said:

I don't even understand what your point is with this. Yes, just because something can be successful without something doesn't mean they shouldn't still strive to offer it if possible? I'm not saying it will be a dominating factor by any means as to whether something is successful. 

If you wanna argue against whether the amount of work it would take to get full BC is worth it for the amount of people who would use it versus focusing on what you know most will use, then that's a different conversation altogether. 

Plus, I always knew that PS1-PS2-PS3 BC was a pipe dream, i'm not annoyed that I didn't get what I wanted, moreso it's towards Sony's stance on it that it's not even worth looking into and that nobody cares about it. 

And to your last question you're basically asking me "Why would you want to play 4 generations of amazing games all on one single system?".

Why should I buy a new system to play archaic games, though?

Personally, I have no interest in things that were released before 2010. Most good games got remastered on PS4 anyway (still not interested).

But in your case you wouldn't be buying it for that. If you buy a PS5 for all the new PS5 games that are coming out, and the PS5 you buy comes with BC, how does that affect you in any way? You just wouldn't use the feature, but it would still be there for those who want it.

The only way you can think it would affect you is if you think that Sony working on older BC will somehow take away from PS5 resources or something. 



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HoloDust on 18 March 2020
drkohler said:
HoloDust said:
Didn't expect such a high clock for GPU,

Well, DevUnit 40 (full use) CUs at 2GHz. PS5 36 CUs (yield!) at 40/36 * 2GHz = 2.22GHz.

You might get the idea they jacked up the clock in a last ditch effort to get to 10.3TFlops after seeing XSX at 12TFlops. On the other hand, the idea of coontinuously running the console in the thermal limit probably takes years of planning.

Is there any info on TMUs/ROPs? For either console?



JRPGfan on 18 March 2020
CuCabeludo said:
Hiku said:

PS5 also has a smaller sized SSD. 820 GB vs 1000 GB.

They don't sound like they will be in the same price category to me.

The number of CUs between Ps5 and Series X don't matter because they have different number of transistors per CU. In total PS5 GPU can do 10 teraflops whereas Seriex X can do 12. A roughly theorical 20% difference in power.

Both are useing Custum RDNA 2... however I suspect the CU's in both are pretty much the same size.
Also the PS4 is useing a smaller Bus for memory.

* Memory bus, usually take up alot of the chip die space in these apu's.
The differnce here between a 256bit bus and a 320bit bus is massive.

Then theres the fact that the playstation 5, doesnt mention SMT.
Which means it might be without it..... so just 8 cores and 8 threads, if they used cores without this it might again save some space.


Theres places were its safe to assume, the playstation 5 chip uses less die space, than the Xbox series X.

If the Xbox series X, is 360mm^2, I think its safe to assume the Playstation 5 one is probably like under 290mm^2.




haxxiy on 18 March 2020
ArchangelMadzz said:
haxxiy said:

I had expected the final clock would try to be even more than 2000 MHz, after the 1825 MHz of the XSX, but I expected something like 2050 MHz locked, not a variable rate.

I wonder about the thermal leeway of the APU and how exactly it's going to juggle the two frequencies. 2.23 GHz on practice is probably as much of a theoretical pipe dream as tablet APUs running at their full speeds.

The PS5 chips and cooling is literally designed to run at max frequency 100% of the time, it's only going to run lower when it needs to. 

They won't, and Digital Foundry agrees with me. Sony even has a base unit to give devs the worst-case scenario of how clockspeeds will behave in real time, though I'm going to predict most, specially third parties, will prefer to run at more deterministic clocks regardless.



 

 

 

 

 

last92 on 18 March 2020
FloatingWaffles said:

But in your case you wouldn't be buying it for that. If you buy a PS5 for all the new PS5 games that are coming out, and the PS5 you buy comes with BC, how does that affect you in any way? You just wouldn't use the feature, but it would still be there for those who want it.

The only way you can think it would affect you is if you think that Sony working on older BC will somehow take away from PS5 resources or something. 

Everything has a cost. The BC MS fans got came instead of other things, possibly new games. Companies (and their divisions) have a budget. Things don't magically appear out of nowhere. I'm not interested in replaying old games, therefore I'm quite happy if companies don't waste time and money on BC and invest in things I'm interested in.



JRPGfan on 18 March 2020
HoloDust said:
drkohler said:

Well, DevUnit 40 (full use) CUs at 2GHz. PS5 36 CUs (yield!) at 40/36 * 2GHz = 2.22GHz.

You might get the idea they jacked up the clock in a last ditch effort to get to 10.3TFlops after seeing XSX at 12TFlops. On the other hand, the idea of coontinuously running the console in the thermal limit probably takes years of planning.

Is there any info on TMUs/ROPs? For either console?

I think its safe to assume both will have 64 ROPs. Their not hungry/powerfull enough to require more.
TMUs depends on the "core" counts of both.

Ex:  
Xbox series X  =  52 CU's (x64 shaders pr CU)= 3328 shaders = 208 TMUs? (16 shaders pr TMU) + 64 ROPs (these are just a fixed number)

While for a Playstation 5, that would look like:

Playstation 5 = 36 CU's (x64 shaders pr CU) =  2304 shaders = 144 TMUs? (16 shaders pr TMU) + 64 ROPs (these are just a fixed number)


^ this is just a educated guess ( I could be wrong)


How this relates to "Pixel Rate" or "Texture Rate" then becomes a issue of math, useing the clock speeds both GPUs are running at.

-------------------

Texture Filter Rate = Core Clock * TMUs.

"In the case of the GTX 980's GM204 chip, that would be 128 TMUs * 1126 = 144128. Note that the 1126 clock speed is measured as MHz, or millions of oscillations per second, so that'd actually be 128 * 1126MHz = 144.1GT/s; in other numbers, 128 * 1126 * (1000/s) = 144.1GT/s." 

Xbox Series X: (useing 208 TMUs) = 208 x 1825 = 379,600  (379,6 GT/s)

Playstation 5: (useing 144 TMUs) = 144 x 2230 = 321,120 (321,1 GT/s)

Pixel Rate is more or less the same, its just ROPs x core clocks.

So Playstation 5 should have a advantage in Pixel Rate as I understand it, but have a lower Texture filter rate.
The rest is the Flops numbers, and memory bandwidth.

Playstation 5 is a slower GPU part than the series x.

Last edited by JRPGfan - on 18 March 2020