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Lower FPS with 8800 GTS as dedicated PhysX card.

Last response: in Graphics & Displays
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August 14, 2012 8:13:54 PM

With the Batman Arkham City Benchmark I get these results:
I get Min:16 Max:80 Avg:48 using the GTX 460 alone at stock speeds.
With the GTX 460 + 8800 GTS PhysX I get Min:16 Max:68 Avg:41

Why is having a dedicated PhysX card hindering my performance? Could it be a driver issue?


Graphics settings are:
Fullscreen: Yes
Resolution: 1920 X 1080 (16:9)
V Sync: No
Anti-Aliasing: Disabled
Stereoscopic 3D Status: Disabled
DirectX 11 Features: Off
DirectX 11 Tessellation: Off
Detail Level: High
Dynamic Shadows: Yes
Motion Blur: Yes
Distortion: Yes
Lens Flare: Yes
Light Shifts: Yes
Reflections: Yes
Ambient Occlusion: No
Hardware Accelerated PhysX: Normal.
August 14, 2012 8:48:19 PM

get your boots it's getting deep.
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August 14, 2012 8:56:45 PM

Actually I've saw where somebody had a single GTX 480 and got AVG: 67 FPS and then tried with a GTX 480 + GTS 8800 and got AVG: 78 FPS.

It doesn't make sense that I'm seeing lower FPS knowing that somebody else tried something similar to what I'm trying and got higher FPS.
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August 14, 2012 8:59:46 PM

theonerm2 said:
Actually I've saw where somebody had a single GTX 480 and got AVG: 67 FPS and then tried with a GTX 480 + GTS 8800 and got AVG: 78 FPS.

It doesn't make sense that I'm seeing lower FPS knowing that somebody else tried something similar to what I'm trying and got higher FPS.


Well those number are wrong they must have turned down the settings or something..
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August 14, 2012 9:26:37 PM

is it a 320mb 8800? if it is, then the card is running out of ram.
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August 14, 2012 9:27:41 PM

It is the 320MB version.
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August 14, 2012 10:00:11 PM

iam2thecrowe said:
is it a 320mb 8800? if it is, then the card is running out of ram.

I just ran the benchmark again and recorded memory usage. The 8800GTS only used a maximum of 100MB out of 320MB during the test. It's not running out of RAM.
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August 14, 2012 10:00:55 PM

theonerm2 said:
I just ran the benchmark again and recorded memory usage. The 8800GTS only used a maximum of 100MB out of 320MB during the test. It's not running out of RAM.


What drivers are you using??
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August 14, 2012 10:05:13 PM

I was using the 301.42 drivers.
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August 14, 2012 10:43:16 PM

if you want better FPS turn physx off altogether. Neither card can run batman in all it's glory. Turn shadows back or off as well as all the other performance lagging crap.

Dynamic Shadows: Yes
Motion Blur: Yes
Distortion: Yes
Lens Flare: Yes
Light Shifts: Yes
Reflections: Yes
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August 14, 2012 10:57:52 PM

Physx isn't a ram hog, 256mb is all you need and second what are your total system specs? A 775 era system can not meet the needs of a dedicated physx card due to i/o limitations when paired with a card that already maxes out the system.

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August 14, 2012 11:00:50 PM

I'm using an FX 8120 CPU at stock speeds for my CPU and I have 8GB of DDR3 RAM in dual channel mode. My motherboard is an Asrock 880G Pro3.
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August 14, 2012 11:02:23 PM

Better than nothing but you must be doing something wrong to be getting the results that you have gotten.
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August 14, 2012 11:19:57 PM

I tried different drivers and got better performance... But performance was still better with the GTX 460 alone.

It might just have something to do with the 8800GTS. It was a graphics card that was given to me. When I got the card it didn't work... But I baked it in the oven and got it working again. Thought I'd try it out as a PhysX card. I think that my problem might be faulty hardware..
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August 15, 2012 1:32:31 PM

Well I got a 460 my self that being the 256bit edition from an early batch and used a 8800gt as a dedicated physx card for mafia 2. I gained around 15-20% performance on average with the physx settings set to max. I used a quality 550w unit from antec that I noticed that handled higher loads than it was rated for pretty well.

I used a p2 x4 820 on a am2+ era board so over all my system would have been much weaker than yours until I later upgraded the board out to a 990fx and 16gb of ddr3 1600. As for the drivers the newest ones usually have a lot of problems for Fermi and even older cards due to the usual bugs and Nvidia trying to nerf older cards to drive sales of Kepler parts.

What you can do is test the 8800 gts on its own and see if it has any major issues.
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August 31, 2012 8:33:38 AM

I doubt this is really what caused the issue but one of my PCI-E slots is 8X while the other is 16X.

My powersupply is a CORSAIR Enthusiast Series TX750 http://www.newegg.com/Product/Product.aspx?Item=N82E168...

On Nvidia's SLI compatibility charts it shows my PSU is certified to run GTX 460/560 and GTX 470/570 in SLI. It is a 750 watt power supply, 80+ bronze certified, and it has a single +12v rail with 62 amps of current. It can overload to 900 Watts and 64 amps on the +12v rail. Any more than that and the power supply shuts down. It's a very high quality PSU.

So I doubt it is a power supply issue either.

I think that it's a bad graphics card that's causing the issue.
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August 31, 2012 12:24:37 PM

I remember reading somewhere that with the later versions of the physx drivers really don't favor the older G80 era cards so in some of the guides they recommend G92 or newer like a 8800gt or a 9800gtx ect. Try overclocking the card with riva tuner instead of msi afterburner. Unlink the core from the shader clock and try to lower the core clock as low as you can then raise the shader clock to 1.6-1.8ghz. That should give the card a nice boost.
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August 31, 2012 12:27:13 PM

I've ordered another GTX 460 1GB to run in sli. It's going to be here today. I'll post what kind of results I get.
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!