Blender is a completely free, open-source 3D application with its physically-based Cycles renderer that can produce V-Ray-quality results. While it has a steeper learning curve, the financial savings and professional results make it an excellent alternative.
Minimum 8 GB; 16 GB or more is highly recommended for complex scenes. Vray 3.6 Sketchup 2018 Patch
To handle increasingly complex models in SketchUp 2018, V-Ray 3.6 overhauled its organizational tools: All-in-One Asset Manager: Blender is a completely free, open-source 3D application