The Silicon Jungle by David H. Rothman

2. Speed. “Even with a simple spreadsheet,” says Scharf, “someone might

get annoyed if it seemed to drag.” In late 1984 his complex calculations on an IBM PC were taking as much as four and one-half minutes. And he said: “There are times when I just need the answers faster.” The powerful IBM AT could run the present version of Lotus 1-2-3 twice as fast. However, he was still looking forward to the day when a version of Lotus 1-2-3 for the AT would require even less time and address the full 3 megabytes of memory (aided by a new operating system). Consult micro magazines for the latest speed comparisons.