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Performance increase w/Physx card?

post #1 of 8
Thread Starter 
What kind of performance increase(in %/average increase in fps) are people getting by installing a standalone gpu to run physx?

Thanks biggrin.gif
Edited by Doogiehouser - 3/22/11 at 10:15pm
post #2 of 8
In 98% of the games out there, 0% to -4%.

In the few games that actually use phsyx a single card + dedicated would result in a pretty decent increase in fps depending on the card you use of course.
    
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post #3 of 8
u will gain alot if u play games that acculy support it (only 13 right now)
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post #4 of 8
Also remember that if you get too slow of a PhysX GPU that you will actually lose performance.
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post #5 of 8
Thread Starter 
Thanks, seems like I'm pretty set with the 580 I have now. Was just curious if picking up a cheaper gpu just for physx would be worth it, but it looks like it wouldn't be and the money would be spent better elsewhere.
post #6 of 8
well if you use it in game then ok but if a game dose not use it put folding on it while you game.
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post #7 of 8
i think gtx580+gts450 run physx r really better combination
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post #8 of 8
With your GTX580 at 1920x1080, you would expect an increase of, say, 10-30% with a Dedicated Physx card on games with Physx effects.

Consider a GTX580 is on the same performance level of a GTX470/480/570, revelant data at 1920x1200 are:

1) Graph 1 shows a GTX480 has an increase of 21% fps (from 39 to 47) with a GTX470 as Dedicated Physx card (Mafia II)

2) http://www.overclock.net/11958584-post1.html
My GTX570 gains 13% with a 8800GTX and 25% with a GTX285 as Dedicated Physx card (Mafia II)

3) http://www.evga.com/forums/tm.aspx?m=411325&mpage=1&print=true
GTX470 gains 38% with a GTX260 Dedicated Physx card (Batman AA)
GTX470 gains 12% with a GTX260 Dedicated Physx card (Cryostasis)

4) Graph 2 shows a GTX460 gains 19% with a GT240 Dedicated Physx card (Mafia II)

A Dedicated Physx card sits idle in your system most of the time, consuming the power less than a typical light bulb. It is like health insurance. It seems such a waste when it is not used. But when you do need it, it pays healthy dividends. A dedicated gamer just cannot miss those eye candies.

As you do not have a spare card sitting in closet and your main card is a beefy GTX580, I would not suggest you to go out and buy one now. Unlike health insurance, you can always add one later on.
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