Compared to modern CAD packages, R21 runs smoothly on older workstation hardware. System Requirements for CATIA V5 R21
Here is a practical story and guide based on the landscape of that time: The Story: Upgrading the Setup download catia v5 r21 2021
If you are a student, you can often access a discounted or free version through the CATIA V5 Student Edition Dassault Systèmes Compared to modern CAD packages, R21 runs smoothly
