2gb vram vs 4gb for video editing etc.

[Big_Benni]

Hello, I am about to purchase a graphics card for my workstation, designed for 3D-modeling and video-editing. I mostly edit in 2k resolution (maybe 4k in the near future?).
I am unsure if I should choose a 2gb or 4gb version of this card:
eVGA GeForce GTX 760 Superclocked w/ ACX Cooler. I am kinda confused, som people say that 4gb is a waste while others says it's a must, especially in oder to futureproof my build.

I do plan on upgrading in maybe 2-4 years. But for now I will get the GTX 760.

In case you need to know, the rest of my build consists of:
Core i7 I7-4770K 8 MB
Azus z97-A
eVGA SuperNOVA 850 G2
Crucial Ballistix Tactical 4 x 8 GB

 

[Jdogz427]

the 760 i am not sure can push those 4GB of vram, i was going to say upgrade your system memory but then i saw you have 32GB. you need a much better GPU to edit and render in 4K at any reasonable speed. rather than but the 4GB version get a used titan if you can for<400 or a gtx780, or you could go with the 8GB r9 290x from sapphire, or you can just wait till feb or march to see what the watercooled 390x can do

 

[Big_Benni]

The GTX 780 will cost me 468USD here in Denmark. That is way to expensive for me at the moment. The GTX 760 will cost me half that price.
The Sapphire is also pretty expensive

Can't seem to find any used Titans at my area.

Budget is 230USD (Denmark/Europe). What should I do?

 

[Jdogz427]

i would try to find a good deal on a 290 or 290x