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Forums - Microsoft Discussion - Digital Foundry: The Complete Xbox One architects Interview

This is big article so I think better you read before I made a resume.

http://www.eurogamer.net/articles/digitalfoundry-the-complete-xbox-one-interview



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tag... will read tomorrow....
liked the video of comparison of target hardware on crisis 3... pretty much what I expected... if I can watch TV with that I'm good lol



Hello guys... I did a litte vacation this weekend... so I will try to resume what I read.

HIGHLIGHTS OR KEY POINTS

  • 15 co-porcessors listed: eight inside the audio block, four move engines, one video encode, one video decode and one video compositor/resizer... SO NOTHING TO HELP GRAPHICS, NO DGPU, NO SPECIAL SAUCE.
  • Co-processors are mostly reserved to Kinect and SystemOS.
  • Each game is shipped with a OS... so the virtual machine for Games only run the OS together with the game.
  • GDDR5 was uncomfortable for them in terms of power consumption and cost... well they have the expensive machine so their comments makes no sense.
  • They didn't have the tech to go with eDRAM in a single die... so they choose eSRAM.
  • The eSRAM runs at 108GB/s but if you use the same metric used for DDR3 you can get 218GB/s but in real case scenarios it will be only 70-80% of that... just me or nothing makes sense here? After they says 204GB/s for eSRAM and the real case only 140-150GB/s.
  • The typical PR: "but if you combine eSRAM and DDR3 you have more bandwidth than competition: 200GB/s".
  • The 32MB eSRAM is enough for 1080p.
  • CPU have read access to eSRAM but it is very slow... I guess they have to access the GPU to get the updates and the CPU can't write, that's mean eSRAM is not coherent.
  • 6.6% in GPU clock give more performance than 14CUs... I guess that happened because they are limited by 16ROPs.
  • The tried to use a fake example that says that PS4 was balanced to 14CUs too... bad move here.
  • They said 32ROPs are overkill for the GPU power so they choose 16ROPs... when most AMD GPUs with more than 14CUs uses 32ROPs, so I guess they are trying to hide the limitation.
  • 10% of the GPU is reserverd for Metro UI and Kinect.
  • They confirme the CPU is weak and the biggest problem for fps drops.
  • They says the 8 ACEs / 64 queues are useless so they choose 2 ACEs / 16 queues but forget to say that they didn't have extre CUs free to use these ACEs / Queues... so I agree it is useless on Xbone because you don't have free power to use them.
  • The flash NAND memory is used to cache the system data to fast boot / instant play.

Well nothing exactly new... a lot of spin... I expected more details to be fair.



why are they focusing on the tech side of things? the PS4 is clearly much more powerful so why try2 hide that?

they should focus on marketing their games, not the tv or fitness side of xbox.....



Wow what a read.

Im knackered.

So 2 completely different designs, getting roughly the same graphics. PS4 has small advantage. As expected.

xbox One will be faster at physics and multitasking. small advantage. As expected.

End result?

As most normal folk expected PS4 an XboxOne have strengths and weaknesses,but at the end of the day its about GAMES, FUNCTIONALITY and RELIABILTY.

Anyone waiting for some major visual difference is gonna be waiting a long time.



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selnor1983 said:
Wow what a read.

Im knackered.

So 2 completely different designs, getting roughly the same graphics. PS4 has small advantage. As expected.

xbox One will be faster at physics and multitasking. small advantage. As expected.

End result?

As most normal folk expected PS4 an XboxOne have strengths and weaknesses,but at the end of the day its about GAMES, FUNCTIONALITY and RELIABILTY.

Anyone waiting for some major visual difference is gonna be waiting a long time.

Nobody is expecting some major visual difference but even the Multiplataform games will show that this time.



ethomaz said:
selnor1983 said:
Wow what a read.

Im knackered.

So 2 completely different designs, getting roughly the same graphics. PS4 has small advantage. As expected.

xbox One will be faster at physics and multitasking. small advantage. As expected.

End result?

As most normal folk expected PS4 an XboxOne have strengths and weaknesses,but at the end of the day its about GAMES, FUNCTIONALITY and RELIABILTY.

Anyone waiting for some major visual difference is gonna be waiting a long time.

Nobody is expecting some major visual difference but even the Multiplataform games will show that this time.

I don't think that's true.  I think a lot of people were secretly hoping for one way or the other.



ethomaz said:
selnor1983 said:
Wow what a read.

Im knackered.

So 2 completely different designs, getting roughly the same graphics. PS4 has small advantage. As expected.

xbox One will be faster at physics and multitasking. small advantage. As expected.

End result?

As most normal folk expected PS4 an XboxOne have strengths and weaknesses,but at the end of the day its about GAMES, FUNCTIONALITY and RELIABILTY.

Anyone waiting for some major visual difference is gonna be waiting a long time.

Nobody is expecting some major visual difference but even the Multiplataform games will show that this time.

which most people beside hardcore gamers won't even notice because they don't have both console or they don't have the eye or they don't even have the equipment to see the difference..... heck they might not even set up the rig right for the most part.... this gen won't be fought on the power and graphic difference... or at least not outside of the hardcore crowd.... it rarely is anyway....





ethomaz said:

Hello guys... I did a litte vacation this weekend... so I will try to resume what I read.

HIGHLIGHTS OR KEY POINTS

  • 15 co-porcessors listed: eight inside the audio block, four move engines, one video encode, one video decode and one video compositor/resizer... SO NOTHING TO HELP GRAPHICS, NO DGPU, NO SPECIAL SAUCE.

I disagree.  By offloading the video encode, decode, and resizing to a separate processor, you free the GPU and CPU up.  Likewise with the move engines and audio block (CPU).

They're what Microsoft calls "Free" resources.  Meaning, developers don't have to program for them specifically, the API is built so that when certain functions are called they automatically take advantage of the features.  Behind the scenes, the API is doing the work so that the developer doesn't have to write custom code to use it.

  • Co-processors are mostly reserved to Kinect and SystemOS.

 No they aren't.  There is a processor within the audio block used by Kinect.  The system will take advantage of some of the processors for various functions, but games will also take advantage of those processors as well.  The Move engines, as an example are part of the GPU and thus are utilized during graphical rendering.

  • Each game is shipped with a OS... so the virtual machine for Games only run the OS together with the game.

Um...no they didn't say that.

  • They confirme the CPU is weak and the biggest problem for fps drops.
  • No, they didn't say that.  They said the CPU is a bottleneck for frames per second in any given system.  Even for the PS4 that's true.



    Adinnieken said:
    ethomaz said:

    Hello guys... I did a litte vacation this weekend... so I will try to resume what I read.

    HIGHLIGHTS OR KEY POINTS

    • 15 co-porcessors listed: eight inside the audio block, four move engines, one video encode, one video decode and one video compositor/resizer... SO NOTHING TO HELP GRAPHICS, NO DGPU, NO SPECIAL SAUCE.

    I disagree.  By offloading the video encode, decode, and resizing to a separate processor, you free the GPU and CPU up.  Likewise with the move engines and audio block (CPU).

    They're what Microsoft calls "Free" resources.  Meaning, developers don't have to program for them specifically, the API is built so that when certain functions are called they automatically take advantage of the features.  Behind the scenes, the API is doing the work so that the developer doesn't have to write custom code to use it.

    • Co-processors are mostly reserved to Kinect and SystemOS.

     No they aren't.  There is a processor within the audio block used by Kinect.  The system will take advantage of some of the processors for various functions, but games will also take advantage of those processors as well.  The Move engines, as an example are part of the GPU and thus are utilized during graphical rendering.

    • Each game is shipped with a OS... so the virtual machine for Games only run the OS together with the game.

    Um...no they didn't say that.

  • They confirme the CPU is weak and the biggest problem for fps drops.
  • No, they didn't say that.  They said the CPU is a bottleneck for frames per second in any given system.  Even for the PS4 that's true.

    Everything I said is wrote in the article... you need to read... I even used the same words from the MS.

    The only part I added is the OS that was confirmed by MS in another interview... each game have it own GameOS... so devs can change it to fit the needs.