To run the 2021 Mechanical toolset smoothly, your computer should meet these standard specifications: Autodesk Student and Educator Software Resources
While the cost is $0 upfront, the hidden costs are significant.
Registered nonprofit organizations can apply for to Autodesk software, including AutoCAD Mechanical 2021.
You can access a 30-day free trial of AutoCAD, which includes the Mechanical toolset. This allows full access to all features to test the software's performance on your hardware.
The search for is understandable. A professional CAD license is expensive. However, there is no such thing as a free lunch.
AutoCAD Mechanical 2021 is a powerful extension of standard AutoCAD, specifically designed for mechanical engineering. It integrates over and automated tools to speed up the design process. How to Get AutoCAD Mechanical 2021 (Official Methods)