I didnt make up any info
I just said that jay said that the FPS were way more with more VRAM
And I added that from my personal testing i have noticed that if you run out of vram the gameplay is not very smooth
About 1080p on 3,5gb vram.... My friend was using his i5's Igpu and upgraded to a 4gb 960 ( i have the 2gb one) and he tested it with msi afterburer and gpu z ( i told him how to do it) and he told me that Black ops 3 ( his only good/modern game) Used 3500mb of vram... And i had tweakd his settings to have locked 60fps. So I am not very sure about the 970 which can handle way better settings how well it will be with 3,5gb
These are just things that i noitced your experiences may vary
Just saying.