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The Physx Benchmarking Thread - Page 2

post #11 of 50
Quote:
Originally Posted by TheRockMonsi View Post
[*]About what does the Physx when a dedicated card isn't there, I believe all those calculations are done on the GPU, and the CPU doesn't do anything about that. The only time it does use the CPU is when a CUDA-based GPU isn't detected. With that being said, I do plan on OC'ing my CPU more to ensure it's not as much a bottleneck in general (current OC at 3.75GHz).


Btw, I'm actually going to post more results, but run the benchmarks in 3D to see if that has any difference as to what's going on right now.
1. Refer to my post #8 here (http://www.overclock.net/nvidia/9114...ted-physx.html). Apex Physx has this odd feature of offloading a portion of the Physx effects (ie Clothing) to the CPU when there is no Dedicated Physx card.

2. I predict, turning on 3D will cut framerate by 50%
post #12 of 50
Quote:
Originally Posted by Behemoth777 View Post
Hmm, interesting. I guess i'll just let my 580 do the physx processing.
My general advice has been and still is: If you already have an extra card collecting dust in your closet, use it. But for the sake of your wallet, do not go out to buy one just for Physx.
post #13 of 50
Here's my tests. I observed some very different things:

Batman AA (in-game settings maxed at 1920x1200)

http://www.overclock.net/nvidia/7867...g-results.html

Here's my (single 470) VS (single 470 + physX dedicated 470) results


Mafia 2 (in-game settings maxed at 1920x1200)

http://www.overclock.net/nvidia/8011...s-strange.html

Here's my (single 470) VS (single 470 + physX dedicated 470) results

Metro has squat for PhysX effects so the results don't mean much, frankly.
    
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post #14 of 50
Yes you can run a dedicated 480 when you have a 480 as you main. I have run many times with SLI 480's and the third for Physx. I have already played through Mafia with this setup and it ran very smooth.





Nice work dude!
Edited by Hodgy1971 - 1/13/11 at 8:12pm
post #15 of 50
Thread Starter 
Quote:
Originally Posted by windfire View Post
1. Refer to my post #8 here (http://www.overclock.net/nvidia/9114...ted-physx.html). Apex Physx has this odd feature of offloading a portion of the Physx effects (ie Clothing) to the CPU when there is no Dedicated Physx card.

2. I predict, turning on 3D will cut framerate by 50%
Yes, 3D does cut the framerates by a lot, but that's not the point in doing that, it's to see if using a Physx card while doing that performs better than with a single GPU. Also, while in 3D, vsync is at 60 FPS, and I don't think there's a way to take it off.
Quote:
Originally Posted by brettjv View Post
Here's my tests. I observed some very different things:

Batman AA (in-game settings maxed at 1920x1200)

http://www.overclock.net/nvidia/7867...g-results.html

Here's my (single 470) VS (single 470 + physX dedicated 470) results


Mafia 2 (in-game settings maxed at 1920x1200)

http://www.overclock.net/nvidia/8011...s-strange.html

Here's my (single 470) VS (single 470 + physX dedicated 470) results

Metro has squat for PhysX effects so the results don't mean much, frankly.
Very different things indeed. What do you suspect might be the reason for such a difference for you and not for me? Is the CPU really that much of a bottleneck? I'll OC mine to 3.9GHz and see what kind of difference that makes.
 
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post #16 of 50
Something is utterly wrong in ur testing. Or maybe u work for AMD?

With my sig rig with Mafia2 1920x1200 res with all settings MAXED without a dedicated card I got like 36fps. But with a GTS 450 for PhysX I now get 49fps.

Yeah, ur either trolling or AMD (OCed to 5ghz?) is crap.
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post #17 of 50
dedicated physx cards suck. however once i oc'd my 9800GX2 (its my physx card) i got 40.7fps in mafia 2, so it was pretty nice..but not enough of an increase to warrant sandwiching..so i pulled the card and its just sitting here until i can find a use for it.
 
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post #18 of 50
Thread Starter 
Quote:
Originally Posted by SadSoul View Post
Something is utterly wrong in ur testing. Or maybe u work for AMD?

With my sig rig with Mafia2 1920x1200 res with all settings MAXED without a dedicated card I got like 36fps. But with a GTS 450 for PhysX I now get 49fps.

Yeah, ur either trolling or AMD (OCed to 5ghz?) is crap.
No, I'm not trolling, and please don't draw stupid conclusions like that - it does nobody here any good. If you don't have anything to say that would be helping this cause out, then I ask that you keep your thoughts to yourself.

At the moment I'm looking into why I'm not seeing some of the increases in FPS that some of us have. I hope it's just a CPU bottleneck, but we'll find that out tomorrow when I get back from work.
 
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post #19 of 50
Quote:
Originally Posted by windfire View Post
My general advice has been and still is: If you already have an extra card collecting dust in your closet, use it. But for the sake of your wallet, do not go out to buy one just for Physx.
My general advice is, if you have a spare video card floating around hock it off and use the 50 bucks for something useful.

Your Machine is way better off without the extra heat and the world is better off you using a little less power.
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post #20 of 50
Thanks for this info. Also, you should run F@H on it. You will really only see about a $10 - $12 increase on your bill as long as you don't run your comp 24/7.
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