The four reasons are as follows:

1, CAD, of the three software, does not require a high graphics card

2, proe and ug require a high graphics card. But you said you are making ends meet, I believe you don't have much money.

3, for those who study mechanics, a lower graphics card is just a problem with the display, but it doesn't matter how much you draw.

4, you find a job the company will give you a computer, I believe the graphics card will not be bad, you want to draw on the side of the work, you can choose to work overtime.