two video cards show up in your render settings and can be used at the same time.Cuts render times in half. You are rendering two giant tiles at a time with this config. You also have the option to run a render on 1 card and use the other just to run your monitor. In this config I can surf the internet and watch youtoob videos all day long while my machine also renders something in Poser.

That sounds like me now. I do notice a speed boost but my system still chokes at higher settings. Hair is still the meaning of eternity. I worry about stealing cycles from the render. Have you noticed any difference in the array of colors over, say, the integrated chip or a cheaper video card? Plus your video cards aren't matched.

Hmmm, you say Poser is set up to take advantage of crossfire? I do have a spare PCI slot. (SLI for you uninnoculated),