[1] Based in Corvallis, Oregon, the company enjoyed a heyday in the 1990s, becoming a market leader in the CPU upgrade segment.

In 1992, Evergreen introduced the 486 SuperChip, a CPU upgrade module featuring Cyrix's Cx486 processor that allowed 286-class machines to achieve close to i486-level performance.

[7] At their heyday in the 1990s, Evergreen's largest competitors included Intel themselves, with their i486 and Pentium OverDrive chips, and Kingston Technology, with their TurboChip.

[2]: 76  Sales in Evergreen's upgrade modules grew 159-fold between 1993 and 1998;[3] the company sold roughly 40 percent of their products to international buyers.

[8][9] Development of the AcceleraPCI was Evergreen's most expensive undertaking to date and was highly publicized in the tech press.