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GeForce 8400GS as a Dedicated PhysX Card.

Discussion in 'NVIDIA' started by Timmie3054, Aug 15, 2010.

  1. Timmie3054 New Member

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    Okay, I have a ATI 4870 as my main card. My mobo only supports 1 PCI-e slot.
    My ATI 4870 is currently using it.

    I do have 2 PCI slots available though. I was looking at some PCI cards, and I came across a GeForce 8400GS 512MB Card.

    I really want to play Mafia II with physX on, but I cant because I need a PhysX card.

    So my question is.

    If I use my ATI 4870 as my Main card, Can I use the GeForce 8400GS 512MB as a Dedicated PhysX Card?. I don't see why this would not work...

    Also, I was not sure if it would work because the GeForce 8400GS 512MB is a PCI card, and my ATI is a PCI-e Card. I don't know if this would cause any issues.

    Here is the card I would be purchasing.
    http://www.canadacomputers.com/prod...item_id=023549&sid=0l612h55oblt6uvi9pcirsi5l0

    Also I am quite aware there are drivers out there that let you use nVidia cards with ATI cards.
  2. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    First up, you can't do it
    At least 2 PCI-E Slot is available on your motherboard, but you only have 1. Of course you can't use PCI-E video card on regular PCI slot.
    Secondly, I don't think you can use the 8400GS for PhysX because if I wasn't wrong, at least an 8600GT or better :D
    Or you can get some Aegia PhysX card in PCI interface. It will help you doing PhysX :D Done ! :toast:
  3. Mussels

    Mussels Moderprator Staff Member

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    I'll join in with some more information for you.

    1. PCI-E and PCI are incompatible.

    2. PCI video cards are too slow for PhysX

    3. the 8400GS is also too slow for physX - people reccomend an 8600GT, 9600GT or better.

    4. The Ageia PPU's would be a good option, except Nvidia has made them pretty much incompatible with the latest versions of PhysX. Dont bother with it.
  4. Timmie3054 New Member

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    Alright, So I will have to buy a mother board that has 2 PCI-e Slots.

    So what card should I buy that will give me the best performance. I heard the 9800GT is pretty good.
  5. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    Yeah that's right
    Go with the 9800GT, just about 80-90 USD, great card for PhysX
    I think it will perform well with the HD4870
  6. Mussels

    Mussels Moderprator Staff Member

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    9800GT do have a good rep for PhysX cards, yes.

    You didnt mention your operating system, but keep in mind ATI + PhysX doesnt work in vista, only XP and 7 and that you would obviously need a decent power supply to run two video cards.
  7. Timmie3054 New Member

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    oh.... Well I am using windows Xp, and my PSU is 600w. So... would that be enough?
  8. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    In regularly, you must have 3 PCI-e 6 pin Connector. 2 for HD4870 and 1 for 9800GT
    600W maybe is enough if is quality-made PSU like CoolerMaster, Corsair, Silverstone, etc...
  9. Mussels

    Mussels Moderprator Staff Member

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    ^ what he said.


    600W should be sufficient, but it would need to have three PCI-E power connectors.

    This is partially why the 8600GT and 9600GT are popular, since they dont require the extra power connector.
  10. NdMk2o1o

    NdMk2o1o

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    Wait stop, you are now thinking of buying a new motherboard and a 9800gt just for physx? :wtf: why not just sell your 4870 and bag yourself a GTX 460, job done :rolleyes:
    Faith[ROG].Anarchy says thanks.
  11. Timmie3054 New Member

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    actually. My PSU is 700 watts, it is made by OCZ

    My 4870 takes one 6 pin, and one 8 pin. I don't have any more 6 pins, but is there an adapter? like a molex to 6pin?
  12. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    Sell a HD4870 for about 200 bucks and try to get about 20-30 more
    Good point dude, thumbs up :D
  13. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    Most of the 9800GT will have that adapter.
    Oh BTW, what is that HD4870 :confused:
  14. Mussels

    Mussels Moderprator Staff Member

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    there is, but theres a catch. on PSU's with multiple rails like your OCZ, the adaptors get you power from the first rail only - so its possible to overload that rail causing the PSU to shut off (you'll experience sudden shutdowns and reboots)


    my advice to you would be a 9800GT green edition, or 9600GT to lower the power requirements to help avoid that issue.
  15. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    Meh, still have a feeling I'm a noob with all of you guys over here :D
    BTW I thought 9600GT still requires a 6 pin PCI-E :D
  16. Mussels

    Mussels Moderprator Staff Member

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    9600GT and 9800 green edition are the two fastest ones without needing 6 pin PCI-E power.

    Of course, they still draw power off the first rail of your PSU (since its coming from the motherboard) - but since they're lower power cards, its less of an issue.
  17. HossHuge

    HossHuge

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    If you're not in a rush, I'd wait for the low to mid range Nvidia cards that should be out next month.

    DX11 and hopefully lower power consumption.
  18. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    He means the GTS 440, 445, 450 :D :toast: Coming soon :D
    HossHuge says thanks.
  19. Gjohnst4

    Gjohnst4 New Member

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    Just for realistic purposes, 4870's are selling for about 75$ on ebay right now. You wont get 200$ unless someone is....well :wtf:
  20. Faith[ROG].Anarchy

    Faith[ROG].Anarchy New Member

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    Mentally retarded on computer technology :confused: Like I am :banghead:
  21. AlienIsGOD

    AlienIsGOD

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    If the OP is in Canada i'd say between $75-100...
    Crunching for Team TPU
  22. Xaser04

    Xaser04

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