Errr... Why not use the processing power provided by some of the more common graphics cards? It would make some of the lighting effects go that much faster. It seems that some games look really good, and they're moving around with animated textures. No reason why every aspect of the image has to be generated by the CPU. There should be a way to batch aspects of image rendering to the graphics card and then process the composite result using the CPU.
I've heard a rumor that Bryce 6 exists. Supposedly it's somewhere at a place called Groom Lake. Of course if you find it, you might not be seen again. And you thought regular Bryce was addictive.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.