When working with 3D visualization and modeling software, I think the PC hardware can make a big difference, especially when handling complex models and scenes. I usually look at the CPU and GPU together rather than considering only one component. A system can have a powerful graphics card but still experience performance limitations if the processor cannot keep up. Before upgrading hardware, I also find it useful to check the CPU/GPU combination with a PC performance check to get an idea of whether one component may become a bottleneck.