Weitek Corporation was an American chip-design company that originally focused on floating-point units for a number of commercial CPU designs.

[6] Weitek FPUs had several differences compared to x87 offerings, lacking extended double precision but having a register-file rather than a stack-based model, or using memory-mapped I/O as opposed to port-mapped I/O.

Weitek turned their frame-buffer experience to the PC market in the early 90s and introduced a series of SVGA multimedia chipsets known as the "POWER" systems.

Consisting of two chips, one drawing the graphics known as the P9000 and another handling the output, the VideoPower 5x86, the POWER series was used in a number of third-party designs based on the VESA Local Bus standard.

Weitek adapters were fairly successful in the early days of the 486 market, but fell from use when less expensive systems were introduced by a host of new players in the mid-1990s.