Is the Dell Precision 3640 good for CAD?

Yes. Precision workstations are ISV-certified for software like SolidWorks, AutoCAD and Creo, which means the configuration is tested and supported by those vendors. This model has an 8-core i7 and 16 GB of RAM, enough for moderate CAD work.

Does it come with a monitor?

No. The listing is the tower only, with no monitor, keyboard or mouse mentioned. Budget for a display and peripherals if you do not already have them.

Can I upgrade the RAM and storage?

Yes. The tower has free memory slots and drive bays, and DDR4 RAM and 2.5-inch or M.2 SSDs are easy to add. Check the exact slot count and maximum capacity in Dell's manual for this model.

Is Windows 10 Pro still supported?

Windows 10 reached end of standard support in October 2025. You can keep using it, but plan to move to Windows 11 if the hardware supports it, or pay for extended security updates.

Is $1,399 a good price?

Only one store lists it new at $1,399 as of November 7, 2026, so there is no recent price history to compare. Compare against current Precision tower models with similar specs before buying.