Bryce renders slow compared to most other programs, no matter what computer your on! It's the only real drawback about the program. It's just something you have to accept, no matter what, it's going to be slow at rendering,but it's worth the results. Hopefully Bryce 5 will have a faster render engine. Bryce has a different type of render engine than any other 3D program, it handles 3D objects in a non traditional manner. Even if you had a 1.5 Ghz processor with 512 MB of DDR, the render times would only be improved by a marginal amount,it's just the nature of the beast.