The Commodore 64 was introduced in January 1982 with a CPU of 1.024 megahertz and 64 kilobytes of RAM. These specs seem very small by today’s standards, but they were enough to make the Commodore 64 the best-selling single personal computer model of all time. Today an Alienware gaming pc or laptop can reach CPU speed of 4.2 gigahertz with multiple cores supported by a massive 16GB of RAM. Source : www.alienware.co.uk