[MassiveTruck]

[rquote=2592350&tid=147884&author=Lauren]It basically determines how good of quality you view images on your computer, Harry. A good one means the picture is crisp and clear, and a bad/average ones means they're maybe slightly pixelated or something. Every computer/laptop has one by default, but you can buy "better" ones to increase quality.[/rquote]

I wouldn't say pixelated - I'd say it takes longer to render the image while a good quality one on a good quality board will render things faster and allow you to do more (graphics based) things at once.