Next Generation Hardware Speculation with a Technical Spin [post E3 2019, pre GDC 2020] [XBSX, PS5]

Discussion in 'Console Technology' started by DavidGraham, Jun 9, 2019.

Tags:
Thread Status:
Not open for further replies.
  1. Metal_Spirit

    Regular Newcomer

    Joined:
    Jan 3, 2007
    Messages:
    550
    Likes Received:
    337
    That’s RNDA 1. When I tunned in he was talking about gains from RDNA 2 over RDNA 1, and it seemed to me he mentioned 15% IPC gains.
     
    pharma likes this.
  2. rekator

    Regular

    Joined:
    Dec 21, 2006
    Messages:
    784
    Likes Received:
    27
    Location:
    France
    That remember me, old time, when at the morning you're be awaked by a shining chrome sphere created by the Mighty Amiga!!! :-D
     
    Silent_Buddha, London-boy and scf like this.
  3. London-boy

    London-boy Shifty's daddy
    Legend Subscriber

    Joined:
    Apr 13, 2002
    Messages:
    22,179
    Likes Received:
    6,447
    I just looked at that picture AMD used on the RT slide and oh my lord my eyes hurt. Mercury water, chrome balls, chrome walls - this is worse than lens flare.
     
    rekator, BRiT and chris1515 like this.
  4. Entropy

    Veteran

    Joined:
    Feb 8, 2002
    Messages:
    3,184
    Likes Received:
    1,177
    Just for the sake of it I looked really hard at parked cars a few months ago. I realised it was the first time I ever noticed a reflected reflection. If RT hadn't been a topic I would have gone through life to my death never bothering to notice something my brain automatically discards. I can see the market concerns that drive these developments, but I can't for the life of me see the high power/cost path as a good evolutionary trajectory for gaming that I'm interested in subsidising. That's just a personal opinion, of course.
     
    JPT and London-boy like this.
  5. JoeJ

    Regular Newcomer

    Joined:
    Apr 1, 2018
    Messages:
    964
    Likes Received:
    1,091
    The point is such reflections are expensive, in contrast to AO or shadow rays. So the image indicates good performance.
    Also, the picture shows lots of discontinuous depth at high frequencies. This hurts denoising and hints a somewhat larger number of rays per pixel. Really looks like denoising worst case. Also indicating good performance.
    Makes me think it's not that different from RTX performance, at least not a bad surprise.
    Though, we neither know resolution, framerate or how it looks in motion ofc.
     
    BRiT likes this.
  6. JoeJ

    Regular Newcomer

    Joined:
    Apr 1, 2018
    Messages:
    964
    Likes Received:
    1,091
    If so, this could be about only the desktop GPU, but not necessarily consoles. Remembering, TMU patent lists CU interaction or optional fixed function processing of outer traversal loop. Probably having both is another option.
    So there is still room for secret sauce or different implementations and possibilities, even if RDNA2 RT confirmed for both.
     
  7. Metal_Spirit

    Regular Newcomer

    Joined:
    Jan 3, 2007
    Messages:
    550
    Likes Received:
    337
    I've been watching the presentation again, but skipping parts, since I do not have time... I seem to miss the affirmation of the 15% IPC gains... I heard a 50% (spoken by a Asian guy - David Wang?). Might I have missunderstood fifteen with fifty, when he was talking about perf/watt gains? If so, I'm sorry for misleading, but I always wrote "If i listened right" on my sentences...
     
    #3447 Metal_Spirit, Mar 6, 2020
    Last edited: Mar 6, 2020
  8. milk

    milk Like Verified
    Veteran Regular

    Joined:
    Jun 6, 2012
    Messages:
    3,409
    Likes Received:
    3,261
    There are many things the average person does not notice conciously about lighting fenomena, but that were them to be missing in a synthesized render it would feel uncanny, only for reasons one can't trully explain. That is even more true for highly dynamic scenes where artists can't band-aid odd looking places with hand placed artificial lights and other tricks to cover areas that are more pathological to modern real time renderers.
    The promise of RT, although that utopia is still ways away, is that eventually engines will be able to do phisically correct path tracing of the entire scene in real time with enough precision that anything will look realistic no matter how you arange it, as long as it's made of proper PBR materials and lightsorces.
     
    #3448 milk, Mar 6, 2020
    Last edited: Mar 9, 2020
    Cuthalu and Mitchings like this.
  9. Miniature Kaiju

    Newcomer

    Joined:
    Jun 10, 2019
    Messages:
    50
    Likes Received:
    58
    The future is shiny and chrome.
     
    London-boy likes this.
  10. DavidGraham

    Veteran

    Joined:
    Dec 22, 2009
    Messages:
    3,278
    Likes Received:
    3,523
    FWIW, the demo AMD showed was prerecorded and not live.
     
    JoeJ likes this.
  11. chris1515

    Veteran Regular

    Joined:
    Jul 24, 2005
    Messages:
    4,642
    Likes Received:
    3,541
    Location:
    Barcelona Spain
    https://www.psu.com/news/martha-is-dead-dev-impressed-by-ps5s-previously-unannounced-texel-density/

     
  12. iroboto

    iroboto Daft Funk
    Legend Regular Subscriber

    Joined:
    Mar 6, 2014
    Messages:
    10,353
    Likes Received:
    9,986
    Location:
    The North
    PS5 will allow us to use an incredible Texel density, up to 4096px/m
    is there any way to reverse engineer this number?
     
    PSman1700 likes this.
  13. Love_In_Rio

    Veteran

    Joined:
    Apr 21, 2004
    Messages:
    1,579
    Likes Received:
    197
    RDNA performance at X clock = 100
    RDNA 2 performance at X clock = 115

    RDNA wattage = 100
    RDNA 2 wattage = 77

    RDNA 1 perf./watt = 100/100 = 1
    RDNA 2 perf./watt = 115/77 = 1,5

    That 15% sounds pretty equal to the gain Nvidia obtained from Pascal to Turing thanks to concurrent integer operations.
     
    #3453 Love_In_Rio, Mar 6, 2020
    Last edited: Mar 6, 2020
    AbsoluteBeginner likes this.
  14. Globalisateur

    Globalisateur Globby
    Veteran Regular Subscriber

    Joined:
    Nov 6, 2013
    Messages:
    3,460
    Likes Received:
    2,162
    Location:
    France
    What do they mean with the m of 4096px/m ?
     
  15. BRiT

    BRiT Verified (╯°□°)╯
    Moderator Legend Alpha

    Joined:
    Feb 7, 2002
    Messages:
    15,426
    Likes Received:
    13,897
    Location:
    Cleveland
    London-boy likes this.
  16. chris1515

    Veteran Regular

    Joined:
    Jul 24, 2005
    Messages:
    4,642
    Likes Received:
    3,541
    Location:
    Barcelona Spain
    Great explanation about texel density

    https://www.artstation.com/artwork/qbOqP

    It means we will have huge quality texture everywhere. This is part due to the biggest RAM size and the better streaming from an SSD. It will probably be the same on XSX.

    EDIT: Here it means the texel density will be perfect for 4k. You don't need to have bigger texture resolution it is perfect. Out of rendering at higher resolution no need for higher texture pack.

    [​IMG]
     
    #3456 chris1515, Mar 6, 2020
    Last edited: Mar 6, 2020
  17. London-boy

    London-boy Shifty's daddy
    Legend Subscriber

    Joined:
    Apr 13, 2002
    Messages:
    22,179
    Likes Received:
    6,447
    DSoup, rekator and TheAlSpark like this.
  18. iroboto

    iroboto Daft Funk
    Legend Regular Subscriber

    Joined:
    Mar 6, 2014
    Messages:
    10,353
    Likes Received:
    9,986
    Location:
    The North
    thanks for this.

    we talk a lot about a bunch of stuff here that is technical, most of it around lighting and rendering etc, I would hope one day we get more texture artists in here to talk about their jobs etc. Seems interesting about how to get art right.
     
  19. Globalisateur

    Globalisateur Globby
    Veteran Regular Subscriber

    Joined:
    Nov 6, 2013
    Messages:
    3,460
    Likes Received:
    2,162
    Location:
    France
    Shouldn't it mean that they are indeed using a narrow and fast design ?
     
  20. rekator

    Regular

    Joined:
    Dec 21, 2006
    Messages:
    784
    Likes Received:
    27
    Location:
    France
    We need Sebbi !! :yes:
     
    iroboto likes this.
Loading...
Thread Status:
Not open for further replies.

Share This Page

  • About Us

    Beyond3D has been around for over a decade and prides itself on being the best place on the web for in-depth, technically-driven discussion and analysis of 3D graphics hardware. If you love pixels and transistors, you've come to the right place!

    Beyond3D is proudly published by GPU Tools Ltd.
Loading...