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Add a PhysX Card?

post #1 of 17
Thread Starter 
I currently have an ATI 6950 that im going to unlock to a 6970 tonight. I also have an old 7900GT (256MB ddr3). I was wondering if I can/should add this card as a dedicated physX card and will it increase performance?

thanks for your help.
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post #2 of 17
No.

Only GeForce 8 series and newer are capable of PhysX as they have an onboard physics processing unit.
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post #3 of 17
Quote:
Originally Posted by FlawleZ View Post
No.

Only GeForce 8 series and newer are capable of PhysX as they have an onboard physics processing unit.
This

Also, if you're running that card, some of the higher end Physx games actually require a 8800 GTX or higher for the highest Physx settings.

Check out the attachment.

Comps
post #4 of 17
8XXX/9XXX or above with 96 Shader Processors minimum
    
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post #5 of 17
Thread Starter 
Is it worth the cash for a used 260 for something?
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post #6 of 17
I've got SLI GTX 470 SCs, should I dedicate one to PhysX or would it make a difference?
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post #7 of 17
Thread Starter 
Quote:
Originally Posted by LazarusIV View Post
I've got SLI GTX 470 SCs, should I dedicate one to PhysX or would it make a difference?
SLI > Dedicated PhysX any day.
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post #8 of 17
Well you can go with SLI+Physx but if you've only got 2 PCI-E then stick with SLi
post #9 of 17
Quote:
Which NVIDIA GeForce GPUs support PhysX?

The minimum requirement to support GPU-accelerated PhysX is a GeForce 8-series or later GPU with a minimum of 32 cores and a minimum of 256MB dedicated graphics memory. However, each PhysX application has its own GPU and memory recommendations. In general, 512MB of graphics memory is recommended unless you have a GPU that is dedicated to PhysX.
Link: http://www.nvidia.com/object/physx_faq.html

Not every member of the 8-series makes it. For 32 shaders, it must be 8600GT or higher. So, 8600GS/8500GT (with 24 shaders) and those with fewer shaders do not make the list.
List: http://www.nvidia.com/object/physx_gpus.html

For reference, 7900GT has 24 shaders.

Edit 1:
Below is a chart giving a rough idea of what grade of card to get for Physx.

Edited by windfire - 3/23/11 at 8:31am
post #10 of 17
Quote:
Originally Posted by windfire View Post
Link: http://www.nvidia.com/object/physx_faq.html

Not every member of the 8-series makes it. For 32 shaders, it must be 8600GT or higher. So, 8600GS/8500GT (with 24 shaders) and those with fewer shaders do not make the list.
List: http://www.nvidia.com/object/physx_gpus.html

For reference, 7900GT has 24 shaders.
BUt the 8600GT can actually reduce FPS rather than just having a single high end card.

As seen in the attachment I posted.
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