Address width	32 bits
Co-processor	Intel 80487SX
Common manufacturer	Intel, IBM, AMD, Cyrix, Texas Instruments, Harris Semiconductor, UMC, SGS Thomson
Data width	32 bits
Designed by	Intel, with Pat Gelsinger as chief architect
Discontinued	September 28, 2007
FSB speeds	16 MHz to 50 MHz
Instruction set	x86-16, IA-32 including x87 (except for "SX" models)
L1 cache	8 KB to 16 KB
Launched	April 10, 1989
Max. CPU clock rate	16 to 100 MHz[a]
Package	168-pin PGA, 196-pin PQFP, 208-pin SQFP
Predecessor	Intel 386
Socket	PGA168, Socket 1, 2, 3
Successors	Pentium/i586 (P5), Celeron
Technology node	1 μm to 600 nm
Transistors	1.2–1.6 million
Virtual address width	32 bits (linear); 46 bits (logical)

I486

Key specifications