minimum System Requirements for Jitter patches

• GPU-based particle systems ([jit.gl.buffer] + [jit.gl.tf]) rely on the GPU.

• cv.jit objects are CPU-based

• pose for interactive systems (I guess you are refering to Google Mediapipe running in jweb?) relies on the GPU and isn't specifically demanding (it was made to run on a smartphone)

• OpenGL is executed on the GPU

As to how much power you need, it depends a lot on your patch and your capability to optimize it.

If you use lots of big textures or play multiple videos at the same time, you might require a decent amount of VRAM, if you draw millions of triangles with lots of post-processing then it comes to raw GPU power if that's a thing. Also your output is important to consider. Are you going to project one 1920x1080 feed? Or multiple 4K? This can have a huge impact of the required specs (starting by the number of video ports available on the computer: it's not common to have more than one on cheap laptops).

I can do a lot with my +7 years old laptop equipped with a GTX 1060 GPU with 6GB of VRAM and two video outs. This or something else with a GTX1660 will possibly be enough for most things you throw at it and cost a few hundred box second hand.

I like to think about the hardware as part of the artistic constraint. It's not clear whether or not your project is already defined or not, if yes then maybe it's worth detailing it a bit so we can give more precise advice. If not then maybe just get the best laptop you can afford and use its limitation as a creation rule.