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Is Physx Worth It? Should I?

post #1 of 28
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Ok i have a 9800gtx+ just laying around on my desk, I could use it for physx but people say that with the 4xx and 5xx cards that the card is strong enough to run physx better then a dedicated physx card. Also how would you setup a physx card, install the card then do you need to download the drivers for that card?. So is it worth it?
post #2 of 28
I'd only put it in, beat the game that has gpu physx, and then take it out. http://physxinfo.com/news/3819/mafia...views-roundup/

Since I have an ATi/AMD card, it doubled my framerates in mafia 2 w/ 5850+gts250 combo, for you, it'll probably give around 20% fps increase maybe. Metro 2033 should get a bit of a boost too. What game are you playing?


Edited by Gabkicks - 5/30/11 at 3:50pm
post #3 of 28
It's a waste of time and resources.
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post #4 of 28
If it were a GTX 260, then I think it would be worth it. I mean, the PhysX processing power of the 9800 GTX+ is inferior to the GTX 470's, so it would actually be a bottleneck. It would be like slowing down the PhysX processing power of the GTX 470.
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post #5 of 28

Hey, I was going to try something similar until I saw this video that proves you should NOT add a dedicated PHYSX card if that second card is a lot slower than your existing card:


What's nice about the video is that he tries different cards as the dedicated 2nd card to give you an idea just how fast the 2nd card needs to be to give you better FPS.
post #6 of 28
it's worth it
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post #7 of 28
An 9800GTX+ as a Physx card certainly will help a GTX470 main card.

8800GT has 112 shaders while 9800GTX+ has more (128 shaders).
Here is a most recent study by brettjv who paired up his 8800GT (Physx) with a single GTX470 and then with a pair of GTX470.
http://www.overclock.net/nvidia/1024...ally-help.html

For both cases, there is 'significant' framerate improvement. Go and read the results in the thread to see if you are happy with the improvement.

I have looked at your motherboard (DFI Bloodrage GTI X58) which has one empty slot between the GTX470 and the 9800GTX+ and so ventilation should not be a problem.

Your PSU (ToughPower X7 775W) also has enough native PCIe connectors to do the job.

To install the Physx card:-
1. Power down your system
2. Insert the card into your motherboard
3. Connect the two PCIe power cables to the card
4. Bootup
5. If the Physx card is detected properly, then go to NVCP to enable it as Physx card
6. If the 9800GTx+ is not detected properly, I would re-install the Nvidia driver again. The driver package should already be somewhere in your pc already. A Nvidia driver package includes the Physx driver inside already. Use the 'Clean Install' feature
post #8 of 28
Quote:
Originally Posted by tsm106 View Post
it's a waste of time and resources.

+1
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post #9 of 28
if you already have the card and there is a physx game that could benefit i dont see why you cant use it. the 9800GTX should be sufficient to give a boost to your 470.
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post #10 of 28
It should help in games like Mafia 2. 9800GTX+ is similar to a GTS 250 in performance. Only a handful of games use GPU-accelerated PhysX, so it would be idle most of the time.
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