Slightly mixed up over the GPU choices and VRAM. Would I benefit from moving from the 450/455 to the 460? I don't game, and I really only use Photoshop for mocking up web and app designs (no 3D stuff). Might get into 1080p ish video editing (maybe) but that's a while off and no special effects just clipping together videos. Also watch 4K movies on a 4K display. I will use a 4K monitor and plan to move to 2x 4K (or maybe one 5K a year from now). Would I benefit at all from going from 2GB VRam to 4GB? Or would the 450/455 be fine and I wouldn't notice a difference? I can't find a straight answer anywhere.