Is memory important for 3D?

I currently have a PC with 96gb memory for AE and 2D.

This PC is pre-built and every parts are soldered so I can't change GPU and other parts.

So I am thinking to buy another PC for 3D.

But I was wondering if 64gb memory would be good enough for 3D.

My budget is 1.5k - 2k.

I don't know what the most important for 3D but I just know I should have RTX GPU as most softwares require ray tracing.

I would appreciate any recommendations on GPU, memory and CPU.