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What is a PhysX card?

post #1 of 23
Thread Starter 
hi all
I just saw some sig rigs that owners has an AMD gpu but has also some old nVidia card (i think it was 5870 and 9600GT as PhysX card)

Is he running some kinda of hybrid? Or what?
Can some one explain

Thanks
    
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post #2 of 23
The thing you saw is a dedicated PhysX card. If you have a dedicated PhysX card, you can enable Nvidia PhysX in games which support it.
    
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post #3 of 23
a waste of time and money..
    
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post #4 of 23
Quote:
Originally Posted by microman View Post
a waste of time and money..
Snap.
post #5 of 23
Quote:
Originally Posted by SKULLTRA1L View Post
The thing you saw is a dedicated PhysX card. If you have a dedicated PhysX card, you can enable Nvidia PhysX in games which support it.
Pretty much this ^.
Since AMD doesn't have native support for GPU PhysX, hacks have been developed to let you run an AMD primary card and a (usually weaker) Nvidia card to handle PhysX computations in games that support them.

Pretty great imo; just that very few games support PhysX so a lot of AMD users don't think it is worth having the extra card.

Quote:
Originally Posted by microman View Post
a waste of time and money..
LOL. Ouchie

Some people had old Nvidia cards before switching to the Red team so it is not really a waste of money
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post #6 of 23
There is a physics engine used by some games that used to be called Ageia PhysX. Back then there were dedicated PhysX cards that ran this engine faster than the other option, which was to let the CPU handle the workload. A few years ago, nVidia bought Ageia PhysX and made it possible to run it on nVidia GPU's starting with the 9xxx series. Now it is called nVidia PhysX and some people use nVidia GPU's solely for the purpose of handle the PhysX engine in games that use it.
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post #7 of 23
Quote:
Originally Posted by JSDempsey View Post
There is a physics engine used by some games that used to be called Ageia PhysX. Back then there were dedicated PhysX cards that ran this engine faster than the other option, which was to let the CPU handle the workload. A few years ago, nVidia bought Ageia PhysX and made it possible to run it on nVidia GPU's starting with the 9xxx series. Now it is called nVidia PhysX and some people use nVidia GPU's solely for the purpose of handle the PhysX engine in games that use it.
Actually, it started with the 8xxx series. Otherwise, correct.
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post #8 of 23
it is an useless nvidia card to be used in the 0.1% of games for some marketing crappy effects that could be done on 1 core of the cpu, but nvidia says we need a dedicated card for them
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post #9 of 23
When your primary card is one made by AMD, you cannot "efficiently" run PhysX, a physics engine made by Nvidia (Things like breaking glass, moving cloth, and various effects that make everything a bit more life-like).

To solve that, you buy a separate card, which you install as a secondary display adapter, and you assign to it the workload that the PhysX demands. So, in conclusion, you will not get an FPS drop during these calculations.
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post #10 of 23
Quote:
Originally Posted by sixor View Post
it is an useless nvidia card to be used in the 0.1% of games for some marketing crappy effects that could be done on 1 core of the cpu, but nvidia says we need a dedicated card for them
It's much more efficient to let the gpu handle the load, and the effects are quite nice. There are quite a few games that use it now.

I wouldn't recommend it as a serious investment if you're running ATi, but if you can find a cheap card to use for it, or have an old one you're not using anymore... it's a good pick up.
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