I run a AMD Athlon @ 800 Mhz with 128 Mb RAM with a 40 Gb HDD and a NVidia RIVA TNT 2 Graphics Accelerated card. It is not my system that is slow, rather it is Bryce's rendering engine. It love to take its sweet time with transparency and volumetric stuff. Oh well! I think the results are worth the wait and besides, I can still work with the computer while it is doin its thing. It does not slow it down or affect the render time in any way I have seen