screen res

I made a research and saw that these resolutions which cause screen-door effect. Oculus : 2160 x 1200 HTC Vive : 2160 x 1200 Maybe some or most people will say that "there is no screen-door effect *** are you talking about ?" but i just want the answer of my question. I know that we can produce...

HI, Just wanted to know if the max resolution a graphics card can display is dependent on the type of PCI express slot the card is plugged into? So if a PCIe v3 card capable of displaying 2560x1440 is plugged into an old motherboard which only supports PCIe v1 can it still display 2560x1440...