I have an Athlon 64, 3400+ chip, InVidia G-Force FX 5900XT, 1.5 GB Ram, Western Digital 72GB SATA C drive, 2 Maxtor 250GB SATA D-E drives, running XPpro... Kicks major butt with Poser Pro-Pack and Vue 4 renders! Startup times in just seconds, average renders in under 60 seconds (your mileage will vary obviously depending upon scenes). I will REALLY need this horsepower once I upgrade to the new Vue 5 with GI, HDRI, Radiosity, etc. (But I was planning on that). Got the machine from CompUSA and have been very happy with all of it from day one.