a pc processor manufactured by Intel as an upgrade towards 386 processor series and generally named the 486 or i486. The 80486 has 8k of memory cache built into the processor with 32-bit databus structure and had been available in clock prices which range from 20MHz to 33MHz. The 486 was available as either a DX or SX, the DX features an integrated coprocessor, the SX cannot. In addition to the 486SX, a 486SX2 has also been offered and had been with the capacity of doubling the rate. The picture is a typical example of the Intel i486 SX processor utilizing the OverDrive socket.