The Nintendo 64 (ニンテンドウ64), often abbreviated as N64, is Nintendo's third home video game console for the international market. Named for its 64-bit CPU, it was released in June 1996 in Japan, September 1996 in North America, March 1997 in Europe and Australia, September 1997 in France and December 1997 in Brazil. It is Nintendo's last home console to use Cartridges to store games. It was discontinued in 2001 in Japan, North America and PAL regions by the launch of the GameCube.
Highly Emulated, most emulators play a reasonably large portion of games, usually around 60 fully-compatible games for some emulators.
There is a relatively high-cpu requirement for N64 games, depending on which emulator you choose. Usually higher-accuracy means higher CPU requirements. However, with today's computers, usually there are no performance problems.