Difference between normal Physics and PhysX? 11 replies

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Serio VIP Member

The Dane

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#1 10 years ago

I know that PhysX throws some of the Physics load onto the GPU, but wouldn't a multi-core CPU be faster to process Physics than a GPU?




Mastershroom VIP Member

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#2 10 years ago

PhysX is the most confusing thing ever. I have an Intel E2200 dual-core CPU processor and and nVidia GeForce 8800GT, but any game with PhysX lags like all hell, like completely unplayable framerate. =/




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The Dane

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#3 10 years ago

Apparently, Nvidia released a bunch of drivers for the 8800GT(Same card as mine!) that optimized the card for PhysX. I haven't tried it yet though.




Metall_pingwin

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#4 10 years ago

I was curious about that as well. I tried a physX freeware game a while back and it was terribly laggy on my computer, on lowest settings I believe. I have a dual core 2.8ghz processor and 8800GT, so it was slightly odd.




Mastershroom VIP Member

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#5 10 years ago
Metall_pingwin;4603934I was curious about that as well. I tried a physX freeware game a while back and it was terribly laggy on my computer, on lowest settings I believe. I have a dual core 2.8ghz processor and 8800GT, so it was slightly odd.

Warmonger? =p




Metall_pingwin

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#6 10 years ago
Zamamee;4604942Warmonger? =p

t'indeed




UNDIESRULES

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#7 10 years ago

You are effectively doubling the workload of your GPU if you have only 1 card with Physx enabled. There is only i processor doing the donkey work, if you have SLI or a faster GPU, this is where you will start to see the benefits.




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The Dane

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#8 10 years ago

Using the Nvidia GeForce 8 PhysX drivers, i noticed everything PhysX runs smooth. I can see my CPU taking equal load from the PhysX in GRAW 2.




random_soldier1337

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#9 10 years ago

How do the physics of a game differ if it is normal or PhysX? Does it start using real world physics or something? Also how do you "get" PhysX if you understand me?




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The Dane

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#10 10 years ago
Siddharth Gupta;4605159How do the physics of a game differ if it is normal or PhysX? Does it start using real world physics or something? Also how do you "get" PhysX if you understand me?

PhysX is much more smooth and seems more "fluid" than normal HavoK or DMM(just two examples). You can look a few examples up on YouTube.

Getting PhysX is the "hard" part. If you have a GeForce 8 or above series you can download the drives below and install them. I can't guarantee it'll run perfect or anything(ran fine for me though on my 8800GT). NVIDIA PhysX System Software Otherwise, there's cards and CPU's designed for the task of processing PhysX. There's not alot of games out there with PhysX yet, but i bet a few will come out as it develops.




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