System resources may increase depending on the complexity of the geometry you use. Minimum requirements are sufficient for simple geometries. However, you will need much stronger hardware power to convert the real satellite model to GDML format.
Operating System: Debian-based distributions (Ubuntu 18.04, Mint 18, etc.)
CPU: Minimum Intel Celeron and equals, Clock speed 1.8 GHz and above
Memory: 4 GB RAM
GPU: 256 MB and above onboard and external graphics card
Storage: 200 MB available space