Question about memory use and large meshes

Hi guys, we are working on a project where we have a 8M face mesh from a photogrammetry survey scan of the site and Rhino uses 8-9 GB ram on showing that file.
I read online that an old rule of thumb is 1GB ram per 1M faces so that corresponds quite well, but is that the case? Because the Rhino file is just 500 MB. This is a textured file though, so much data there too if that too has to be stored in the RAM.

But that brings up the next question, how can my GPU handle that data with only 6GB VRAM? It too has to hold the enitre mesh + the textures + the screen resolution in pixles too doesn’t it?

Just curious :slight_smile: