A quad is a four-wheeled vehicle, often used for transportation or recreational purposes. It can also refer to a group of four people who are friends or work together as a team.
The Fire HD 8 isn't exactly a beast in term of specs, but it offers decent performance, courtesy of a 1.3 GHz quad core processor, decent for casual mobile gaming. (tablet-news.com)
It comes loaded with common features as seen on other 1.3 GHz quad core powered handset but with a difference. (gogi.in)
While there's nothing wrong with this, it's not a 5.5 - inch with Quad HD resolution. (digitalhome.ca)