A multimedia computer is a computer that is optimized for multimedia performance.

Early home computers lacked the power and storage necessary for true multimedia. The games for these systems, along with the demo scene were able to achieve high sophistication and technical polish using only simple, blocky graphics and digitally generated sound.

The Amiga 1000 from Commodore International has been called the first multimedia computer. Its groundbreaking animation, graphics and sound technologies enabled multimedia content to flourish. Famous demos such as the Boing Ball and Juggler showed off the Amiga's abilities. Later the Atari ST series and Apple Macintosh II extended the concept; the Atari integrated a MIDI port and was the first computer under US$1000 to have 1 megabyte of RAM which is a realistic minimum for multimedia content and the Macintosh was the first computer able to display true photorealistic graphics as well as integrating a CD-ROM drive, whose high capacity was essential for delivering multimedia content in the pre-Internet era.

Multimedia capabilities were not common on IBM PC compatibles until the advent of Windows 3.0 and the MPC standards in the early 1990s. The original PCs were devised as "serious" business machines and colorful graphics and powerful sound abilities weren't a priority. The few games available suffered from slow video hardware, PC speaker sound and limited color palette when compared to its contemporaries. But as PCs penetrated the home market in the late 1980s, a thriving industry arose to equip PCs to take advantage of the latest sound, graphics and animation technologies. Creative's SoundBlaster series of sound cards, as well as video cards from ATI, Nvidia and Matrox soon became standard equipment for most PCs sold.

As of 2021 most PCs have good multimedia features. They have dual or more core CPUs clocked at 2.0 GHz or faster, at least 4 GB of RAM and an integrated graphics processing unit. Popular graphics cards include Nvidia GeForce or AMD Radeon. The Intel Core and AMD Ryzen platform, and Microsoft Windows 10 and Windows 11 are some of today's products that excel at multimedia computing.

More recently, high-performance devices have become more compact, and multimedia computer capabilities are found in mobile devices such as the Apple iPhone and many Android phones, featuring DVD-like video quality, multi-megapixel cameras, music and video players, and internet call (VoIP) functionality.