Be warned, this model is extremely Ehh, Good Enough™.

The detail is minimal, measurements were taken with a $22 digital caliper, and I rounded all of the dimensions to the nearest 1/4mm, so a laser scan or micrometer precise model this is not.

I rounded everything to avoid having to chase tenths back and fourth, which worked, but instead I had to deal with tolerance stacking which was equally annoying and time consuming. So overall it was dumb. Don't do this.

I made this model to facilitate designing a fan shroud for the card and I figured +/- 0.10-0.15mm is plenty close for that purpose, especially in the context of FDM. At a minimum critical dimensions like positioning are as accurate as possible… within a resolution of 0.25mm of course.

(STL included only for the 3D preview, use the STEP or F3D for actual modeling)