Like with most of the Grand Theft Auto games, you have a gigantic sandbox world that you can explore, and you have a fully immersive world with. It's a world that was inspired by the Miami of the 1980s, and you can steal cars, rob stores and pull off drive-by shootings.
It features 256 shader units and clock speeds of up to 800 MHz. It is based on the third generation GCN architecture.