Recommendations about AI on Vim 3

For AI applications (deep learning) does the 2GB of extra ram on the Vim 3 pro really matter ? For this kind of applications should I consider the Vim 3 pro (4GB of ram) or do you think the basic model is enough ?
Thank you have a good day !

I use DEEPFAKELAB on my PC.

DEEPFAKELAB has very high requirements on video memory.

My GTX1080 8gb graphics card is very slow.

It depends on the model size and model calculation volume, you should evaluate it yourself.