>>410850293
The VRAM is very nice, but everything else is a waste for VRC. VRC is very light on the GPU, even a 1070 will not be maxing out its fill rate or capacity any time soon.
Really you just want to go hard on the VRAM. if you only play VRC/CVR, then any card with good VRAM which can outperform the 1070 will be plenty.