Could someone please explain vram to me?

Amywalker730

Honorable
Nov 24, 2014
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Hello, I'm in a bit of a worrying spell. By the end of the year I plan to upgrade my GPU and go 4k, but vram is causing me to worry. At the moment I am running a heavily modded Skyrim at 1900x1200 that eats up 3.7GB of vram.

As I understand it, the GTX 980 TI will have 6GB of GDDR5 vram, while the 390x will have 4GB of HBM. Would either of these two hold an advantage over the other for my needs?