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Testing SLI and Physx

D

dbranger94

n00b
Joined
Nov 14, 2005
Messages
33
I was wondering if there was a program that I could use to verify that my SLI/Physx setup is working like it should. I'm not sure that all three cards are working together.

I'm playing around with 2 8800GTS(G92) in SLI along with a 9800GT for PhysX.

I downloaded FluidMark, but it appears that only one 8800GTS is doing all the work, even though it is in multi-gpu mode.

In the nVidia control panel app, I have it set up with the 9800GT as dedicated to PhysX, but it also defaults to this setup if I let it choose for me.

I was hoping for a simple program to check/test this configuration.

Thanks
 
Cryostasis was a huge steaming pile. It looked bad and ran bad. Physics processing was slower than crap on much nicer hardware than that.

Get Batman AA if you want to see PhysX actually do something that looks nice in a game.
 
Ok, so I ran the Cryostasis Tech Demo Benchmark 3 times.

Results

First Run: 2) 8800GTS in SLI + 9800GT dedicated to PhysX
Time: 154.980s
Total Frames: 9821
Avg. Framerate: 63.4
Min. Framerate: 27.2
Max Framerate: 146.6

Second Run: 2) 8800GTS in SLI, w/second 8800GTS processing PhysX
Time: 243.962s
Total Frames: 9821
Avg. Framerate: 40.3
Min. Framerate: 23.8
Max Framerate: 125.2

Third Run: 2) 8800GTS in SLI + CPU (Q9550 @ 3.4GHz) for PhysX
Time: 741.602s
Total Frames: 9821
Avg. Framerate: 13.2
Min. Framerate: 4.6
Max Framerate: 113.9

So, it would appear that everything is working correctly... using this demo at least.
I should probably try some other benchmarks. Any suggestions?
 
Last edited:
I'm going to download Mafia II and Batman AA Demos and try them out. I'll post back with the results.
 
Should I try to take the 8800s out of SLI and test it again? In other words one for 3D and one for PhysX...
 
Fourth Run: 8800GTS + 8800GTS dedicated to PhysX
Time: 217.398
Total Frames: 9821
Avg. Framerate: 45.2
Min. Framerate: 25.9
Max Framerate: 118.2

Fifth Run: 8800GTS + 9800GT dedicated to PhysX
Time: 218.161
Total Frames: 9821
Avg. Framerate: 45
Min. Framerate: 26.2
Max Framerate: 114.5

Mafia II Demo

First Run: 2) 8800GTS SLI + 9800GT for PhysX = 30.8 fps
Second Run: 2) 8800GTS SLI w/second 8800GTS for PhysX = 26.4 fps
Third Run: 8800GTS + 8800GTS dedicated to PhysX = 28.7 fps
Fourth Run: 8800GTS + 9800GT dedicated to PhysX = 29.4 fps
 
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