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Quick PhysX Question - Page 2

post #11 of 14
Quote:
Originally Posted by SperVxo View Post
I tested this out last night. Dedicated Physx card 260 GTX and main card 570 GTX.

In mafia 2, The dedicated Physx card incresed FPS by 8 in the benchmark 52 FPS.
With only 570 card 44fps

And then forced CPU to do physx and i didnt even complete that test,

I did this with Metro 2033, Not benchmark. But i did play same part and did the same explosions with grenades. And i cant say i saw much of a diffrence either way but using CPU att physx was way slower.

And i cant get Batman to run Physx with the GPU only CPU, But then again that game runs without hickups either way.

So a physx card is worth it if u play Mafia 2 alot or maybe Metro

Even if the card is IDLE its still making the Main Gpu card warmer.
did the minimum fps drop, stay the same, or rise when adding the physx card? i'm interested to see that part of the test...
    
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post #12 of 14
Thread Starter 
Quote:
Originally Posted by victorofhavoc View Post
did the minimum fps drop, stay the same, or rise when adding the physx card? i'm interested to see that part of the test...
I got my 580 today but my water blocks got delayed so I didn't setup my i7-950 or my Rampage III Extreme so I'm fairly certain I'm CPU and memory bandwidth limited, however:

I ran Mafia II's bench mark with everything turned up:

GTX580+GTX260 PhysX = 34.2 fps

GTX580 only = 32.4 fps

I took some screens of Vantage too.

I'm gonna do some more testing and tomorrow when UPS finally shows up I'll be able to see if it is my CPU or board making my performance suffer

As you can see from the screenshots using a 260 for PhysX on VANTAGE made the score go down
Everything else I've tried has seen an improvement using a dedicated card so maybe it's just vantage

Also something odd I noticed I ran GTA IV and when I quit I looked at GPU usage in EVGA Precision and saw that GPU2 (the 260) had the same memory usage as the 580 I was under the impression that only happened in SLi.
Could that be the reason for the lower performance?


Edited by Tristanguy1224 - 2/3/11 at 5:35pm
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post #13 of 14
Quote:
Originally Posted by Tristanguy1224 View Post
I got my 580 today but my water blocks got delayed so I didn't setup my i7-950 or my Rampage III Extreme so I'm fairly certain I'm CPU and memory bandwidth limited, however:

I ran Mafia II's bench mark with everything turned up:

GTX580+GTX260 PhysX = 34.2 fps

GTX580 only = 32.4 fps

I took some screens of Vantage too.

I'm gonna do some more testing and tomorrow when UPS finally shows up I'll be able to see if it is my CPU or board making my performance suffer

As you can see from the screenshots using a 260 for PhysX on VANTAGE made the score go down
Everything else I've tried has seen an improvement using a dedicated card so maybe it's just vantage

Also something odd I noticed I ran GTA IV and when I quit I looked at GPU usage in EVGA Precision and saw that GPU2 (the 260) had the same memory usage as the 580 I was under the impression that only happened in SLi.
Could that be the reason for the lower performance?
a 2fps bump in my opinion isn't really worth it, and i assume that's what you're really going to see a lot...

as far as the oddity goes, how much memory was actually being used? sometimes the main card isn't doing very much to render but the physx card is doing it's hardest to account for explosions and such...
    
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128 GB SSD, 500GB, 1TB Lite On Windows 7 64 bit Samsung 22" 1680 x 1050 
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post #14 of 14
Quote:
Originally Posted by Tristanguy1224 View Post
I got my 580 today but my water blocks got delayed so I didn't setup my i7-950 or my Rampage III Extreme so I'm fairly certain I'm CPU and memory bandwidth limited, however:

I ran Mafia II's bench mark with everything turned up:

GTX580+GTX260 PhysX = 34.2 fps

GTX580 only = 32.4 fps

I took some screens of Vantage too.

I'm gonna do some more testing and tomorrow when UPS finally shows up I'll be able to see if it is my CPU or board making my performance suffer

As you can see from the screenshots using a 260 for PhysX on VANTAGE made the score go down
Everything else I've tried has seen an improvement using a dedicated card so maybe it's just vantage

Also something odd I noticed I ran GTA IV and when I quit I looked at GPU usage in EVGA Precision and saw that GPU2 (the 260) had the same memory usage as the 580 I was under the impression that only happened in SLi.
Could that be the reason for the lower performance?
Actually my setup is very similar to yours I just got my gtx 580 last night with an i7 950 @ 4.02 ghz on a asus p6x58d-e. I do got a gtx 250 that I was gonna use for physx but Im kinda worried about heat because the gtx 580 is running @ 60 idle and 85 load. With the fan @ 85% i get 48 idle and 60 load which seem pretty stable. How has your card been running? Do have issues with the heat at all? Have you been getting screen tearing at all? And what setup do you use for the nvidia control panel?
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