|The IIci was one of the most popular and longest-lived Mac models of all time. For much of its lifespan, it was the business "workhorse" of the Macintosh line. For a short time in 1989, before the introduction of the 40 MHz Macintosh IIfx, the IIci was the fastest Mac available.|
Possible upgrades include 25, 33, 40 or 50 MHz Daystar 68030 boards, a Quadra 700 motherboard, a couple of different third-party 68040 upgrades, and two PowerPC 601 upgrade cards running at either 66 MHz or 100 MHz, exclusively from Daystar Digital, which was bought by XLR8, which still holds the Daystar product logo and name for its line of products. 68030 and 68040 upgrades were also made by Sonnet, Diimo and other companies.