Hi JML82,

> Do Moi3D use OpenGL or DirectX?

On Windows MoI uses DirectX.


> Is Moi3D compatible with Quadro K620?

Yes it should be fine - MoI has very modest requirements, it should be compatible with any nVidia or ATI graphic card from the last 10 years or so.

MoI also does not require the high end "workstation" cards - the "gaming" type cards are fine for it. But several other CAD programs can be more sensitive to that and so if you are running other CAD programs especially ones using OpenGL the more expensive cards can be helpful for that.

The video card companies basically only offer their full OpenGL driver support on their high end cards and artificially limit the OpenGL drivers on their lower end "gaming" cards.

- Michael