This will be my last post with my present hardware using Octane.

I formated my HD and installed Windows XP 64 Pro SP2. Installed 197.45 nvidia driver. Downloaded Octane demo and scene files. Ran benchmark.ocs as I did with Windows 7 64 Ultimate and guess what? I got the same M/s as with Win7. My ...

Hello radiance,

Thanks for clearing up my PCI-e bandwidth concern.

As the last attempt to figure out my M/s problems I focused on CPU usage as a possible cause for the bottle neck. I ran windows task manager - (process tab) and monitored octanedemo.exe CPU usage. I have a Quad Core Q6850 3GHz CPU ...

I think my issue may be my motherboard chipset. I have been studying the details of PCI-e data bandwidth and my board has PCI-e 1.0 slots which have half the bandwidth of more modern PCI-e 2.0 slots.

I maybe wrong here, but I advise that if you are going to use a powerful GPU (200 series or above ...

I really like this render. What I read here on the forum, I see that its a great product. I really want to make sure my system can run it properly before I purchase it.

I am stumped. In a DX10 enviroment such as Futuremark Vantage benchmark my GPU score with no SLI is 10983 but with SLI on I get ...

I unistalled the 258.96 driver and used Driver Sweeper to remove all traces of the driver. I then installed 197.45.

I then ran the Benchmark and my Room renders as I did with the 258.96 drivers and have the same results with the 197.45. Adding the second card does gives the same M/s as one card ...

I ran the Octane Benchmark.ocs and set the pathtracing kernel to maxdepth = 1024 and the rrprob parameter to 0.65.

I used three instances of GPU-Z to see what the GPU Loading is on all three. This may not be a true test and I might be fooling myself.

I then ran the same benchmark with with ...

Hello Radiance,

I ran TechPowerUp GPU-Z to verify that my SLI is disabled. I have attached the screen capture of it.

xsipower

Hello Radiance,

I loaded a very heavy interior scene 370MB obj that has only one material shader for all objects and using a 22MB HDRI environment to light through the windows of the room. The render has 3021471 traingles and uses 602MB of the 997MB available on the 280 GTX.

I ran the same render ...

Hello Tomas_p,

I mentioned in my first post:

"I am using Nvidia driver 258.96 with both SLI and PhysX turned off."

SLI is off.

Thanks anyway.

Hello,

I downloaded the latest demo 1.022 beta 2.2. I ran the sample ocs benchmark with pathtracing and using only one of my 280 GTX and I get 1.39 M/s. When I run the same ocs with pathtracing with both 280 GTX enable in the Device Manager I get 1.37 M/s.

I also ran the other sample ocs and the ...