Silicon Integrated Systems (SiS) is a company that manufactures, among other things, motherboards. The company was founded in 1987 in Hsinchu Science Park, Taiwan.

The SiS645 and SiS650 are very similar and contain integrated (chipsets) graphic cards. For a long period SiS branded integrated graphic cards and add-in boards, enjoyed a reputation for low performance, poor compatibility, and buggy drivers. However, post 2000, while still not offering feature rich chipsets, SiS solutions have remained cheap, but also delivered reasonable stability and performance.

In the late 1990s SiS took the decision to invest in their own fab facilities. This placed severe financial strain on the company, and reduced the amount of money available for investing in new products, a mistake the management eventually recognised.

SiS and platform.

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