What are requirements for software and hardware of CAD?

Answer 1

any computer can do it. All you need is a basic 2D/3D GPU depending if it is 2D or 3D CAD. The min spec of the computer is very minimal. It would probably run on a Pentium 3, and all other components will be OK as long as they were made less than 10 years ago. CAD isn't very demanding at all

Answer 2

AutoCAD, Autodesk Inventor, ArchiCAD, SolidWorks, and Pro/ENGINEER are pretty common programs in the industry. ArchiCAD, Revit, and AutoCAD Architecture are commonly used by architects. SolidWorks, Pro/ENGINEER, and Autodesk Inventor would more commonly be used by engineers.

As far as hardware, a good computer is usually required. Most CAD applications need a decent amount of RAM, a good CPU, and a workstation graphics card. For input, mice, keyboards, tablets, and scanners are common. If you print a large number of small drawings (8.5x11 or 11x17) you will want a laser printer. For larger drawings you will want a large format plotter (24x36 at least). Plotters can be loaded with either rolls or sheets of paper. If there's a lot of 3D rendering that need to be done a large group of computers called a render farm can be used to divide up the task.