The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Physx?

    Discussion in 'ASUS Gaming Notebook Forum' started by samrozzi, Jan 18, 2011.

  1. samrozzi

    samrozzi Notebook Consultant

    Reputations:
    0
    Messages:
    115
    Likes Received:
    0
    Trophy Points:
    30
    Just kinda curious about the Nvidia Physx tech.

    I know thats a nvidia technology and I have the ATI 5870 card. But wasnt sure if its something thats only in Nvidia cards or if ATI had something similiar. Because when I play a game my laptop will run it 100% perfect on high, but certain games that support physx, once I turn it on at certain events the game will run at a snails pace.

    Just curious
     
    samrozzi, Jan 18, 2011
    #1
  2. frosty5689

    frosty5689 Notebook Evangelist

    Reputations:
    7
    Messages:
    472
    Likes Received:
    0
    Trophy Points:
    30
    The CPU will be used to do any PhysX calculations if you don't have a Nvidia GPU. This probably put too much load on your system in certain areas.
     
    frosty5689, Jan 18, 2011
    #2
  3. myx

    myx Notebook Deity

    Reputations:
    223
    Messages:
    1,017
    Likes Received:
    85
    Trophy Points:
    66
    Ati has some similar, not hardware coded like physx, just software and it;s called Havok. At least it was, not sure if they are still using/developing/promoting it. Afaik very few games supported or support havok engine.
     
    myx, Jan 18, 2011
    #3
  4. Ruckus

    Ruckus Notebook Deity

    Reputations:
    363
    Messages:
    832
    Likes Received:
    1
    Trophy Points:
    0
    If games say they use PhysX it means they do. When you enable PhysX in a game, that just enables hardware acceleration.

    Don't enable PhysX in any game. By default the game already uses the PhysX. That option just tells the game whether to use an Nvidia card or for everyone else your CPU.

    Whether you turn on hardware PhysX or not, the game still uses PhysX.
     
    Ruckus, Jan 18, 2011
    #4
  5. Hedonist

    Hedonist Notebook Evangelist

    Reputations:
    30
    Messages:
    403
    Likes Received:
    0
    Trophy Points:
    30
    Do you mean even if the video card you are using is ATI models, the game itself has physX?

    ----------

    Most of the time if a player enables his PhysX FPS drops. They say you need another videocard that process only PhysX (SLI).
     
    Hedonist, Jan 18, 2011
    #5
  6. myx

    myx Notebook Deity

    Reputations:
    223
    Messages:
    1,017
    Likes Received:
    85
    Trophy Points:
    66
    Put in less words its like this. Should a game require physx libraries (files, etc) it will use them no matter the hardware support. If you enable it in a certain game ,as previously said, you enable it at hardware level thus allocation hrdware resources to process. If you have an ati card the physx procesing will be done by the cpu, if you have an nvidia card it will be done by the nvidia card, if you have sli you can select what card to use for physx from the cpanel. Since we are in the mobile world, you cnnot have both an nvidia card and an ati card in the same system so you can hav the nvidia card do physx processing (like you could do in a desktop system). Hope it helps to clear the fog.
     
    myx, Jan 18, 2011
    #6