For CPU-heavy tasks like RayTracing and PBR, you'll want a powerful processor and high-end GPU. For a solid build, consider an Intel i9 or AMD Ryzen 9 CPU, and an Nvidia RTX 4080 or better GPU. At least 32GB of RAM is essential, but 64GB is even better, along with a 1TB NVMe SSD for speed and space. A basic budget build might include a Ryzen 7 5800X, RTX 3060, 16GB RAM, and a 512GB NVMe SSD. A perfectly fine build could have an Intel i7-12700K, RTX 3070, 32GB RAM, and a 1TB NVMe SSD. For a "money no object" build, go for a Ryzen 9 7950X or Intel i9-13900K, RTX 4090, 64GB RAM, and a 2TB NVMe SSD.