[citation][nom]willard[/nom]This isn't meant to play games, so it doesn't need much memory. Likely won't be rendering anything more complex than a few basic animations, a background and some text.Each 4k display has 9,437,184 pixels. Each pixel is 24 bits, for a total of 7,077,888 bytes per image buffered, and 42,467,328 bytes for all six. Triple buffer it and you still use less than 128MB of memory. That leaves you more than 1.8GB of memory for the simple rendering tasks this card will be asked to do.2GB is probably overkill, but using less would actually cost more since AMD would need to retool a production line to do it.[/citation]
486MiB aka 509.6MB (486MB by how we count RAM and how Windows counts storage capacity), not less than 128MB, is triple buffered 6x 4096x2304 24bpp. Single buffered is 162MiB. Each display would have a 27MiB image and with triple buffering, that's 81MiB per display. Methinks that you have a mistake in your math. You forgot the 2 in front of the 7 to get 27MiB per display instead of 7MB.