IBM 386SLC Microprocessor

As a low-power version of the stellar 386 microprocessor released in late 1991, the IBM 386SLC was equipped with extra pins assigned for power management and a software-enabled 8-Kbyte cache memory. Designed with complementary metal oxide semiconductor (CMOS) technology, the 161-square millimeter die featured three models with clock speeds of 16, 20, and 25 MHz. The fastest model produced only 2.5 watts of dissipated power, suiting it well for laptops and other portable devices.