Running PhysX from a CPU

[reveilleun]

When I run PhysX on my cpu, I get very bad frames on Mafia 2. My cpu is ; 8350.

My friend on the other hand has a 8320, he can run PyhsX crom cpu without problems.

We both have same GPU.

How come my friend can run PhysX fine on a 8320 but I can't run them fine on a 8350?

[Rove]

Yes and he should score a bit lower than you and you can also see public lists of other people who do benchmarks and have the same CPUs as you.

So go see the average that everyone else with the FX 8350 and 8320 gets.

Then benchmark yours.

If it is significantly lower then there is something wrong with your hardware or something on your system is causing problems with it. It will always be a little bit more or less.

You could test it from a Linux LiveCD to confirm if the problem is hardware or some software on your system. If your benchmarks are good enough like everyone elses then contact support for Mafia 2 or Nvidia Physx department and explain the problem.

[reveilleun]

Publicado originalmente por Rove:

Yes and he should score a bit lower than you and you can also see public lists of other people who do benchmarks and have the same CPUs as you.

So go see the average that everyone else with the FX 8350 and 8320 gets.

Then benchmark yours.

If it is significantly lower then there is something wrong with your hardware or something on your system is causing problems with it. It will always be a little bit more or less.

You could test it from a Linux LiveCD to confirm if the problem is hardware or some software on your system. If your benchmarks are good enough like everyone elses then contact support for Mafia 2 or Nvidia Physx department and explain the problem.

Thanks for the clear help. I've downloaded the first link you sent me, not understanding how to check my cpu benchmark though

[Rove]

There should be really complete instructions on their website. Try that or their forums.

[reveilleun]

Publicado originalmente por Rove:

There should be really complete instructions on their website. Try that or their forums.

I took the Nova test here is my results;


CPU Tests (Score: 675)
- Floating Point Operations/Second: 250035800
- Integer Operations/Second: 610729240
- MD5 Hashes Generated/Second: 971495


My friend for some reason doesn't want to do the tests...

[Rove]

Here is the average for the FX 8350 and FX 8320:

................................... Avg. Score Avg. MHz Sample Size
AMD FX8350 EightCore......703..............4219..........2151
AMD FX8320 EightCore......638..............3734..........499

http://novabench.com/cpuchart.php

Seems like your system is very average on that benchmark because it is not overclocked, so slightly below average base speed, and is scoring slightly below average score without any overclocking.

I would recommend contacting the support for Mafia 2, Nvidia Physx or also trying out the Steam Forums for Mafia 2 and the official game forums (if any) hosted on the official Mafia 2 site. I guess if you can not get it working properly and they don't help you then ask for refund and play another game?

I can suggest several good replacement games for the same $ if that is the road you need to take.

[reveilleun]

Publicado originalmente por Rove:

Here is the average for the FX 8350 and FX 8320:

................................... Avg. Score Avg. MHz Sample Size
AMD FX8350 EightCore 703 4219 2151
AMD FX8320 EightCore 638 3734 499

http://novabench.com/cpuchart.php

Seems like your system is very average on that benchmark because it is not overclocked, so slightly below average base speed, and is scoring slightly below average score without any overclocking.

I would recommend contacting the support for Mafia 2, Nvidia Physx or also trying out the Steam Forums for Mafia 2 and the official game forums (if any) hosted on the official Mafia 2 site. I guess if you can not get it working properly and they don't help you then ask for refund and play another game?

I can suggest several good replacement games for the same $ if that is the road you need to take.

So my cpu is under performing? Should I not send my CPU back and get another one? I'd rather replace my CPU if its not working as it should...

Btw, could my cpu be throttling? I am only using an AMD cpu fan that came with the CPU

[Rove]

What? No your CPU is fine.

I said something is wrong with the game, or possibly your system software configuration.

You are scoring above average in fact. The average score is including people who have overclocked their CPU. See how the "Average MHz" is 4219? The normal "stock" Mhz of the FX 8350 is 4000 or 4Ghz. Some people have overclocked to as much as 5000 or 5Ghz when submitting their benchmarks, probably done with expensive watercooling.

So the real average at 4000 Mhz would actually be about "670" because 670+(670*5%)=703 related to 4000+(4000*5%)=4200. Thus as you can see both the average score and average clock speeds being measured when performing the benchmark are 5% higher than the standard stock factory settings used in the FX 8350 because of people who have overclocked their CPUs and then taken the benchmark. When you turn the average speed down and proportionatly turn down the score by the same % you find that it is roughly a benchmark score of 670 at CPU clockspeed of 4000 Mhz which is standard factory set speed without any overclock.

[reveilleun]

Publicado originalmente por Rove:

What? No your CPU is fine.

I said something is wrong with the game, or possibly your system software configuration.

You are scoring above average in fact. The average score is including people who have overclocked their CPU. See how the "Average MHz" is 4219? The normal "stock" Mhz of the FX 8350 is 4000 or 4Ghz. Some people have overclocked to as much as 5000 or 5Ghz when submitting their benchmarks, probably done with expensive watercooling.

So the real average at 4000 Mhz would actually be about "670" because 670+(670*5%)=703 related to 4000+(4000*5%)=4200. Thus as you can see both the average score and average clock speeds being measured when performing the benchmark are 5% higher than the standard stock factory settings used in the FX 8350 because of people who have overclocked their CPUs and then taken the benchmark. When you turn the average speed down and proportionatly turn down the score by the same % you find that it is roughly a benchmark score of 670 at CPU clockspeed of 4000 Mhz which is standard factory set speed without any overclock.

So it's the game that has a problem?

btw, here is mine and my friends results. Can you see why he gets better frames when using hios cpu for PhysX?

Firend: https://novabench.com/view/487488
Mine: https://novabench.com/view/487485

[Wampum Biskit]

Publicado originalmente por Robowski:

Firend: https://novabench.com/view/487488
Mine: https://novabench.com/view/487485

yes , like everyone is saying , your friend is running the physx engine off the 770 not the CPU maybe he doesn't even know he done it , but thats the difference no matter how you slice the pie.

[Rove]

Ya that's also possible.

Ask the games techsupport or ask Nvidia. It's something to do with software not hardware.

However both systems should technically be able to run CPU physx at good framerates.

Try Fluidmark or any other specific Nvidia Physx benchmark with 8 core support to see what I mean.

[reveilleun]

Publicado originalmente por Rove:

Ya that's also possible.

Ask the games techsupport or ask Nvidia. It's something to do with software not hardware.

However both systems should technically be able to run CPU physx at good framerates.

Then why don't they? Is the heavenDX11 benchmark tests any good?

[Rove]

Well for this specific conundrum I would look for a Nvidia Physx benchmark. The one I know is called Fluidmark.

[reveilleun]

Publicado originalmente por Rove:

Well for this specific conundrum I would look for a Nvidia Physx benchmark. The one I know is called Fluidmark.

I'll try that now.

Here is the scores for both of our systems from the heaven benchmark. My CPU is the 8350

He gets a better score?

http://i40.tinypic.com/jfahys.png

Here is my score for the fluid tests; SCORE: 1435 points, 24 FPS (CPU PhysX)

[Rove]

Look you should totally be able to do it on your CPU. PS4 will be able to run Physx for games using a AMD CPU and AMD GPU and it will be doing it on the CPU.

http://nvidianews.nvidia.com/Releases/NVIDIA-Announces-PhysX-and-APEX-Support-for-Sony-Computer-Entertainment-s-PlayStation-R-4-941.aspx

Publicado originalmente por Robowski:

Here is my score for the fluid tests; SCORE: 1435 points, 24 FPS (CPU PhysX)

How many particles did you use?

Did you have it set to CPU only or did it use your GPU as well?

[reveilleun]

Publicado originalmente por Rove:

Look you should totally be able to do it on your CPU. PS4 will be able to run Physx for games using a AMD CPU and AMD GPU and it will be doing it on the CPU.

http://nvidianews.nvidia.com/Releases/NVIDIA-Announces-PhysX-and-APEX-Support-for-Sony-Computer-Entertainment-s-PlayStation-R-4-941.aspx

Publicado originalmente por Robowski:

Here is my score for the fluid tests; SCORE: 1435 points, 24 FPS (CPU PhysX)

How many particles did you use?

Did you have it set to CPU only or did it use your GPU as well?

Here is the complete run down on the results

http://i44.tinypic.com/j0fx5i.png