DRAM vs VRAM question

Hi there,

I have a pc build with 8GB DRAM and 8GB VRAM but as I am working with larger scenes with heavier meshes I was thinking of upgrading my DRAM to 16GB or higher.

My question is, if my VRAM is still 8GB, does that mean the scenes I create requiring >8GB can no longer render on cycles with GPU? Is the upgrade pointless if I want to render on GPU?

On buildbot builds if scene is not fitting into vram it’s moved to ram. For Windows 10 i think 16gb is minimum.