I have an nvidia card, and Poser crashes all the time on me. I get poser not responding, FFRender stopped working, and a few other various explanations when it just shuts down. Many people seem to have issues with nvidia. Go to the website and download the very latest drivers. Make sure you use sree3d instead of opengl preview. Go to your graphics card settings and start turning options off, there's another thread here about what to turn off, but I just woke up and have not had coffee yet, so I will search later once I am awake if someone else doesn't beat me to it. :-)

Personally, I just spent about a grand on my shiny new quad, and it pi**es me off to no end that Poser is so unstable on it. The second I get a chance I am ripping out my nvidia and putting in a geforce. They seem to perform better.

If anyone else has any ideas I would love to hear them.

-Sarah

PS. You have a nice computer. Be sure you are using 4 threads and rendering as a sepeate process, you will see a significant render time improvement (when it doesn't crash!)