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post #31 of 43
Quote:
Originally Posted by Paratrooper1n0 View Post
Thank you both for the intel. + rep. I think I will go with a GTX 560 (non TI) as by the time I get the parts, GTX 460's may be out.
With the 6990s in Quadfire, I wouldnt want the PhysX card to bring them down, make it a 560Ti just to be on the safe side.
   
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post #32 of 43
Quote:
Originally Posted by Johnny Doe View Post
Nonsense, where's your proof? In both single GPU and SLi configs, offloading PhysX to a dedicated GT 430 will help marginally. See the Batman results on the first page. It doesn't matter how much power you have for graphics, PhysX is seperated. Those two are two entirely different instructions that need different amounts of power. You're spouting off crap like the guy above you who thinks you need a 560 Ti for PhysX to "be on the safe side". Being on the safe side is nothing more than ignorance. We humans are scared of things we don't know and are afraid about. You guys have yet to post anything against what I posted. Just BS you think you need. What a load of crap. That's the story, folks.
Give us the numbers. I'll show you mine when I get my gt 430.

here is a benchmark thread within overclock.net

http://www.overclock.net/nvidia/9143...ng-thread.html

under barman AA
you will see this

"Benchmarks at 1920x1080

Mentoss's numbers with AA OFF, AF@16x, all other settings maxed (263.09):
With the GTX 570 (stock?) alone: 85FPS
With a dedicated 230GT (stock?): 67FPS
Percentage increase using a dedicated Physx card: No increase - 21.2% decrease
"
did I prove you wrong? Or is there more to your "opinion" ?

so according to the link above, there is a good chance that my gt 430 may do harm than good.
Edited by dagan - 11/1/11 at 8:15am
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post #33 of 43
ok, so I didn't read the entire thread, but I did read about half of it.

I was thinking about something.

if your game is running at 60fps, and the physx is also processing physics for each frame, as frame rate increased, wouldn't that require the physx processor to also process the physics faster? Just a thought, I wasn't really siding with anybody on the whole argument.

EDIT:
Quote:
Originally Posted by Johnny Doe View Post
PhysX is an extra, differental HW rendering of effects such as cloth, smoke and such. It's different from graphics rendering when rendered externally. That's what the original Ageia card did. It rendered PhysX near your graphics. Which is what dedicating a card does right now.

You don't seem to understand cause PhysX can't be rendered on CPU due the way it's coded. CPU is too slow/shader lacking to do it. A dedicated GPU renders PhysX whether you dedicate it or not. Even one card out of an SLi config is taken since it PhysX can't be rendered on SLi. Go back to the first page then look at the results between 260 SLi PhysX and 260 + 260 PhysX and so on.
I would just like to say, you are wrong about physx not being able to be processed on the CPU, it can be done. The reason why it is so slow is because nvidia purposing used a old slow language for the CPU software, instead of using a newer language such as the SSE. It is known fact, if you do the research, that if nvidia coded physx in SSE, or any other language that the CPU is efficient at, it would perform just as well as a GPU.

EDIT 2: if you are wondering, here is my source for that slander of info.
http://arstechnica.com/gaming/news/2...pite-intel.ars
Edited by thrasherht - 11/1/11 at 5:02pm
post #34 of 43
Quote:
Originally Posted by thrasherht View Post
ok, so I didn't read the entire thread, but I did read about half of it.

I was thinking about something.

if your game is running at 60fps, and the physx is also processing physics for each frame, as frame rate increased, wouldn't that require the physx processor to also process the physics faster? Just a thought, I wasn't really siding with anybody on the whole argument.
Correct. PhysX isn't independent effect. It has to merge with the actual graphics at the end that is why for instance when I'm playing batman AA I run 30fps with PHYSX high on CPU when I can run 56FPS with GPU physx. THe game fps actually slows down if the physx isn't fast enough.

Mind you though. I am no expert. I am only speaking from my experience and benchmarks that others put up with. I don't know why Johnny loves to stress them being separate is a mystery to me

Also I'd like to add. Why give me rep+ when everything I've stated has been went over by others such as birdman on this thread. I am grateful though.
Edited by dagan - 11/1/11 at 5:08pm
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post #35 of 43
I am glad to see posts that make sense now.

What would you suggest OP a decent Dedicated PhysX card to match his 2 x 6990 (4 GPUs), without dragging the FPS down with PhysX Hardware Acceleration titles?
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post #36 of 43
Like, I know that you get to a certain point where you just don't need more power for the physx because the GPU is plenty powerful. But I think there might be a small curve to it.

Such as if you are playing a game that stresses your GPU to the point of only running at 30fps compared to 60fps, I think that would allow you to let the power of the PPU drop down without inflicting FPS losses.]
Understand what I mean? Like I thinking if you are running a game in 3d with 120fps for a 120hz monitor, it is going to take a stronger PPU.
so in other words, the power need of the PPU is based on the FPS the game is going to run at, not the power of the GPU. that sound right?
post #37 of 43
Quote:
Originally Posted by Ken1649 View Post
I am glad to see posts that make sense now.

What would you suggest OP a decent Dedicated PhysX card to match his 2 x 6990 (4 GPUs), without dragging the FPS down with PhysX Hardware Acceleration titles?
Single Slot GTX 460..
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post #38 of 43
Quote:
Originally Posted by TheBirdman74 View Post
If you can read past all the crap Johnny put up here then it all makes good seance.

With anything in the likes of 2 x 6990 - (Dual GPU Cards) You need a GTX460.
Like I said all along.. D:
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post #39 of 43
Quote:
Originally Posted by Ken1649 View Post
I am glad to see posts that make sense now.

What would you suggest OP a decent Dedicated PhysX card to match his 2 x 6990 (4 GPUs), without dragging the FPS down with PhysX Hardware Acceleration titles?
I would love to be able to just say Get gtx that and that but to be honest I am not too sure. Hardest titles to run GPU PhysX were to me at least, mirror's edge and batman. they seemed to be fine and ran comfortable 45+fps most of the time along side with my gtx 480. If OP is looking to max his Primary GPU while playing games.... I can't really picture quad fire primary... ugh...

depends on what OP is looking for. If OP wants no dragging of FPS due to physx, OP should look for more like gtx 460 or more. even that I'm not too sure. I'm not good at guessing how much power you will need. Ugh but gtx 460 or better seems right.

PhysX is fun to play around with. I had ATI 4870 before and bought a 8600gt to play batman AA with PHYSX. it ran terribly but was able to play around a little bit with hacked nvidia physx patch.

I don't know if you still need Nvidia driver hack... do anyone know?
To be honest I didn't like having to go through those patches to just get my cards working back then
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post #40 of 43
Quote:
Originally Posted by dagan View Post
PhysX is fun to play around with. I had ATI 4870 before and bought a 8600gt to play batman AA with PHYSX. it ran terribly but was able to play around a little bit with hacked nvidia physx patch.

I don't know if you still need Nvidia driver hack... do anyone know?
To be honest I didn't like having to go through those patches to just get my cards working back then

If you look at post #2, all the links are there.

That's the easy part, just 3 simple steps:

1. Install Forceware 285.xx (do not restart).
2. Install PhysX SS (do not restart).
3. Run the PhysX Patch (restart PC).

Done.

Verify with GPU-Z, if PhysX is checked, it was installed correctly.
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