Hardware.Info posted Nvidia GeForce GTX 960 4GB review: What difference does extra VRAM make?
A quote from the article:
It was rumored that Nvidia wanted to discontinue the 2GB model of their GTX 960, which would mean that the 4GB model would be the only one available. Does this extra video memory actually serve a purpose? We've tested these two 3D chips with the same drivers and compared the results to find out how much of an improvement in performance this extra memory brings.Nvidia GeForce GTX 960 4GB review: What difference does extra VRAM make? @ Hardware.Info
Gamers have been pondering the age old question of whether it's worth it to buy a mid range video card with more video memory than the reference model forever. GPU manufacturers tend to release slightly more expensive versions of these mid range cards, with more video memory than the standard model. We've always been skeptic about the amount of extra performance this brings, since cards at a lower price point need less video memory to begin with. To be sure though, we have to benchmark these cards.