I am with Trothgard. Single 32 bits processor is alot cheaper at good speed. I would wait for 64 bits cpus whenever win64 and Carrara64 is out. I probably would buy tyan quad opteron 64bits if Carrara will use all of its resources. Someone else suggested that if you buy two separated 32bits system for $300 and it doubles the renderer. I have not tested this renderer brenchmark with 64 bits yet. I am not sure if GHz really matters with renderer brenchmark. Here is my worksheet: 2 X 2.8ghz = 5.6ghz plus double room for GUI processing and 2mb cache and 1600mhz fsb That is for $300 dollar so I say what the heck why not. So I can purchase 6 renderer farm for $1800 so I get 16.8 ghz, 6mb cache, 4.8 ghz fsb and 6-times GUI processing. You would need a decker with special power supply and network bootable harddriver and hub to split the framework for renderer.