Aug 20 (Reuters) - Nvidia Corp on Monday released a new generation of gaming chips that combine its latest "ray tracing" technology and artificial intelligence to give gamers access to more realistic graphics. At a Gamescom 2018 press conference in Cologne, Germany, Nvidia rolled out its newest generation of gaming chips - the RTX 2070, RTX 2080 and RTX 2080 Ti. They are based on its recently launched chip blueprint called "Turing," which Nvidia is also using for higher-priced chips announced last week for game designers, movie makers and other computer graphics professionals. The chips will range from $499 to $999 and will be available in retail stores starting Sept. 20, Chief Executive Jensen Huang said at the event.