Can you do GPGPU on integrated graphics like Intel HD 630 on Core i3? The Core i3 says it has "integrated graphics" with Intel 630.

Does this mean it is like a mini GPU?

In which case can use things like CUDA to speed up C sharp programs?

Is there much software that takes advantage of integrated graphics? Like does photoshop access the integrated graphics?
CUDA is only available on nvidia cards.

The open technology is OpenCL: https://es.wikipedia.org/wiki/OpenCL

Another alternative is to use Compute Shaders. DirectX, OpenGL, and Vulkan all support compute shaders