Intel 486dx

One of Intel’s Intel 486 family of microprocessors (one of the last before the Pentium). The 486DX has a working built-in floating point unit (FPU). The Intel 486SX is effectively a DX with the FPU disabled. The DX has a pin to select the external data bus width (16 or 32).
The Intel 487SX is a 486DX with a 486SX pinout.


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  • Intel 487sx

    processor A version of the Intel 486DX microprocessor with an extra pin, for use in the coprocessor socket of an Intel 486SX system. The 487SX provides the FPU which is missing in the 486SX. Although the 486SX is completely disabled when you install a 487SX, the 487SX design requires that you leave the 486SX in […]

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