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Old January 18, 2009, 06:33 AM
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Default PHYSICS

:help: Hi all,

I currently own a BFG 9800GTX and have some questions regarding the physics acceleration.
Can I use a different card other than the 9800GTX that i have just to do physics and if so, what graphics card would be better?
Is there a model like 8600 gt or 8800 gt etc etc etc...that would be recommended to do just physics? I'm a little lost and don't want to spend a lot of money in a new card just to do physics. :)

Thanks in advance and have a great day!!
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Old January 18, 2009, 07:17 AM
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I believe that you can use any 8xxx series Nvidia card for PhysX. Personally I would recommend either a 8800GT ( If you can find one I believe that they are EOL ) or a 9800GT.

NCIX.com - Buy EVGA E-GEFORCE 9800GT Superclocked 650MHZ 512MB 1.9GHZ 256BIT DDR3 Dual DVI-I HDTV Out Video Card - 512-P3-N976-AR In Canada. - EVGA 9800GT Superclocked - 163.00 after $10 Mail In Rebate

That will do ya.
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Old January 18, 2009, 07:24 AM
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Somebody should explain the benefit behind having a dedicated PhysX card & what it does exactly also as I'm even abit stumped by it myself haha. I will be getting new cards soon & may just get SLI while keeping one of my 8800GTX for a dedicated PhysX but I'd like to know more or if that would even be worth it?
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Old January 18, 2009, 10:01 AM
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Why do you want a dedicated card just for PhysX ? your 9800GTX should be able to handle PhysX and still get decent frame rates in your games - You should give it a try and test for yourself if your rates are decent for you given your resolution and quality settings, you might not even need to spend $$$ for nothing.
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Old January 18, 2009, 10:34 AM
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I think Nvidia is hyping this Physx so that we will hang on to our older generation cards instead of reselling them to casual gamers. More business for them.

/end conspiracy theory


And apparently any 8 series and up card will work as your dedicated Physx card. I'd be tempted to get an 8500 or something like that.
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Old January 18, 2009, 10:47 AM
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Quote:
Originally Posted by SugarJ View Post
I think Nvidia is hyping this Physx so that we will hang on to our older generation cards instead of reselling them to casual gamers. More business for them.

/end conspiracy theory


And apparently any 8 series and up card will work as your dedicated Physx card. I'd be tempted to get an 8500 or something like that.
In Mirrors Edge with PhysX on my cpu usage would be 50% (Core 0) and 90% (Core 1) and this is a C2D chip.
When I turned off PhsyX my cpu usage on both would usually stay around the 90-100% mark.

So no PhysX is not a marketing ploy and I'm sure with a dedicated GPU for PhysX I'd notice better performance out of my card with games.
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Old January 18, 2009, 11:49 AM
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On a somewhat related note, is anyone aware of any studies showing what benefits Physx the most? i.e. if someone was looking at grabbing a cheap secondary card, which aspects are most important? Shader numbers? Shader speed? Memory speed? Memory capacity? How much would you give up going from a 8800GT to a 8600GT?
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