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Forums - Gaming Discussion - Tech Talk Part 1: PS4 GPU Compute Explained, and some other stuff, AC;Unity CPU load XB1 ESRAM 204Gb/s..etc

Thanks for this thread, it's really informative! From the little I know of game development/programming I knew Ubisoft were lying, but it's good to see it explained in detail by somebody who obviously knows their stuff. On a side note, is there anybody that can confirm what the OP says is true, I always prefer to get a second opinion to see how they compare. Don't take that as an insult OP, I just like to be certain!



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Intrinsic said:

Exactly. I have quickly learnt tht people that are too quick to dismiss anything are usually the ones that have agendas. Especially when its so easy to get valid and accurate information these days.

Whats really funny is that everything I have said are things that developers have said themselves, or that anyone with a snippet of coputer knowlege can see for themselves with just a little research. 

I would really have loved him to point out whatever it was that I said that he felt was not true. But he didn't so I didn't bother explaining. 


I think, now I miss your point again.

Are we talking about the 2 years in the future games or the one shipping right now?

You still sound as there are some conspiracy for AC-U parity resolution. And baisicaly ignore all other games that run at the same resolution and very close performance.



Just wanted to chime in and say great article that hopefully clears up some misconceptions some may still have regarding the issue addressed here. Outstanding work and very clear explanations.



Intrinsic said:
TheAdjustmentBureau said:
No offense. But I tryst a developer over a forum poster.

There's a lot of know it all articles on the net who have agendas.

None taken.... You could also just like you know? try and educate yourself over these things. If a firefighter tells you fire isn't gonna burn you if you put your hand in it, you should trust him just becaue he is a fire fighter.

What you are saying is basically that a dev/producer cannot lie about the game they are making. And sorry, what excatly is my agenda here?

Ah well nevermind.


A lot of gamers and articles written by supposed tech sites are always contradicting developers. At the end of the day people like to hate/go against the grain. People often think they know more than people with a multitude of experience using a product from the inside.

 

Ubisoft isnt the first developer ti talk about console CPU being a limiting factor. And they won't be the last. The interenet has recently imploded again with why they demand and think ps4 should be much further ahead of Xbox one. Because frankly we aren't seeing what Sony promised. Same as what Sony promised last gen. Leagues ahead of 360 power etc.

 

I expect this debate to still be going in 2017 when people are still asking why ps4 isn't leagues ahead or why not 1080p. Then cue parity clause bs. When parity has never referred to visuals but release timeframe.

 

So I trust ubisoft, cd projekt and others so far who have said the same thing. But don't waste your time on me. Like I said many online will agree with your opinion. And find tech articles which apparantly no more than the developers.

 

 



Funny how hé avoided m'y post, that tells a lot



Predictions for end of 2014 HW sales:

 PS4: 17m   XB1: 10m    WiiU: 10m   Vita: 10m

 

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Aerys said:
TheAdjustmentBureau said:
No offense. But I tryst a developer over a forum poster.

There's a lot of know it all articles on the net who have agendas.


So, if you have no agenda and if you trust the developper, trust this from ubisoft employee :  http://www.worldsfactory.net/2014/10/15/ps4-gpgpu-doubles-xb1-gpgpu-ubisoft-test


This has nothing to do with what Ubisoft are saying about ac unity, or cd projekt about the witcher 3. We know the ps4 power over xb1 gpu. Like I said in my other post. People on the internet will still be asking in 2017 why ps4 doesnt look way better etc. And like now people will look around the internet screaming parity. Sane old same old.

 

But enjoy the debate. Some of us just won't be suckered into conspiracy theories.



I thought this was common knowledge by now? Some people only believe what they want to. Just because the PS4 is the technically superior device dosent mean the X1 cant produce some outstanding games capable of great graphics. Its just all thing being equal the PS4 has the CAPABILITY to produce the better performing game.



TheAdjustmentBureau said:
Aerys said:
TheAdjustmentBureau said:
No offense. But I tryst a developer over a forum poster.

There's a lot of know it all articles on the net who have agendas.


So, if you have no agenda and if you trust the developper, trust this from ubisoft employee :  http://www.worldsfactory.net/2014/10/15/ps4-gpgpu-doubles-xb1-gpgpu-ubisoft-test


This has nothing to do with what Ubisoft are saying about ac unity, or cd projekt about the witcher 3. We know the ps4 power over xb1 gpu. Like I said in my other post. People on the internet will still be asking in 2017 why ps4 doesnt look way better etc. And like now people will look around the internet screaming parity. Sane old same old.

 

But enjoy the debate. Some of us just won't be suckered into conspiracy theories.

If you understood what hé says, your wouldnt understand this has everything to do with what they say, its shows ps4 gpgpu big advantage is not used yet.

 

Not every développer will use its but more and more will, more the ps4 dominates. 

 

Its like Xbox vs ps2, a lot of games were similar but few dev wanted to use the Xbox extra power



Predictions for end of 2014 HW sales:

 PS4: 17m   XB1: 10m    WiiU: 10m   Vita: 10m

 

kensama said:



Only Housemarque with Resogun and Q game with their new new game (it's explained here) uses compute.

Cerny also gave a roadmap for GPGPU use and in fact by now no engine run a proper PS4 spec engine with GPGPU.
Cerny talk to Gamasutra that those engine will debute in 2015 (Here).

For Guerilla they used the SPURS (SPU Runtime System) which allow developer to simulate the SPU of the CELL on PS4.

And to finish even Guerilla Game, Sucker Punch, Naughty Dog and Quantic Dream (for The Dark Sorcerer demo) uses PS3 engine upgraded for PS4.

You are wrong. Sucker Punch uses compute a lot in Infamous SS notably:

- All particles effects in the game are run by asynchronous compute threads (water, smoke, dust, almost all powers there are a lot of particles in the game, everywhere you look at).

- Some rendering (lighting) stuff 

- All facial physics animation, like wrinkles are run by compute.

- More stuff....

 

Ubisoft don't use compute because they develop their games on Nvidia only PCs. (they have a deal with Nvidia).

Because Nvidia cards are less good than AMD cards at compute so the devs are not encouraged by Nvidia or the crappy Directx drivers to use specific AMD compute API. 

It also explains also why all future AC, watchdogs and The division games will be probably forever upscaled at ~900p on consoles : because those games are not optimized at all for AMD hardware but only for Nvidia hardware, so their Nvidia engine runs like shit on AMD GPUs. The last real next gen AC game was Black flag on PS4 : 1080P with pristine SMAA 2tx (SMAA + temporal AA). Now we are stuck at 900p with a blurry vaseline AA.

I am not talking about Far Cry 4 which uses his own engine, a console AMD optimized engine with notably a great exotic and new AA, HRAA, only possible on AMD GPUs.



the-pi-guy said:
TheAdjustmentBureau said:

A lot of gamers and articles written by supposed tech sites are always contradicting developers. At the end of the day people like to hate/go against the grain. People often think they know more than people with a multitude of experience using a product from the inside.

Ubisoft isnt the first developer ti talk about console CPU being a limiting factor. And they won't be the last. The interenet has recently imploded again with why they demand and think ps4 should be much further ahead of Xbox one. Because frankly we aren't seeing what Sony promised. Same as what Sony promised last gen. Leagues ahead of 360 power etc.

I expect this debate to still be going in 2017 when people are still asking why ps4 isn't leagues ahead or why not 1080p. Then cue parity clause bs. When parity has never referred to visuals but release timeframe.

So I trust ubisoft, cd projekt and others so far who have said the same thing. But don't waste your time on me. Like I said many online will agree with your opinion. And find tech articles which apparantly no more than the developers.

Developers often contradict themselves.  

CPU is definitely a limiting factor, but on the frame rate.  What has Sony promised this gen?  

 

Most of the time they confirm what the developers have said, but if you just want to listen to the ones that share your viewpoint even if the developer had said different in the past/present, then that's your choice.  i

I listen to the final product. Infamous used this extra sauce on ps4. And it doesn't look noteably leagues ahead of ac unity, horizon 2 etc. Halo 2 and half life 2 used all of Xbox extra sauce over ps2, but wasn't noteably superior to shadow of collosus or god of war 2. Xbox one is powerful enough. Over 10x more power than the 360. Quantum break looks incredible especially in the detail and effects department and is said by remedy native 1080p.

 

Until I see something that blows away Xbox one noteably on ps4, all this is a lot of hot air.

 

Let the games do the talking. Its the same hot air about cloud computing. In 2018 cloud computing could really help Xbox one visuals. But until I physically see games much better, its just blah blah blah.