I was thinking around 1980 or 1985, back before IBM PC and clones became popular. Turns out I was wrong, Intel was about 2x to 4x larger than AMD in those days.

I was thinking around 1980 or 1985, back before IBM PC and clones became popular. Turns out I was wrong, Intel was about 2x to 4x larger than AMD in those days. I went back and got some hard figures. I had to average yearly high/low stock price to compute historical market cap. All values in $millions: 1980 1985 1990 ttm / yesterday ---- ---- ---- ---- AMD sales 309 576 1059 3990 mkt cap 446 1672 617 3170 INTC sales 855 1365 3921 55360 mkt cap 1667 3091 7990 149260 In 1985 Intel sales are 2.37x AMD and market cap is 1.85x. Currently Intel sales are 13.8x AMD and market cap is 47x.