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CADD requires high processing speeds because of the thousands of calculations that it is required to do every second.

If you are using 3D CADD software, such as SolidWorks, it must be able to take integrals and all of the other calculus based equations for a full model.

This is why when you make one simple change to the beginning of a SolidWorks drawing once you have finished, or come close to finishing, the part it must redo every calculation that it had done the entire time that you were working on the model checking for places where any errors would occur and reshaping the part from start to finish.

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Q: Why does CAD require powerful hardware to run the software?
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