8 is twice as big as 4, right? Well when it comes to 8K video/screen resolution, that's only partly true. 8K resolution most commonly equates to 7,680 by 4,320 pixels, which is twice the horizontal resolution and twice the vertical resolution of 4K (3840 x 2160). But as all you math geniuses may have already calculated, that results in a 4x increase in total pixels. Imagine four 4K screens positioned in a quad arrangement and that's what an 8K image looks like - quite simply, HUGE!