For I486dx2 we have a term and definition in Technology.

An Intel microprocessor introduced in 1992 as an upgrade to certain i486DX processors. The i486DX2 processes data and instructions at twice the system clock frequency. The increased operating speed leads to the generation of much more heat than in an i486DX, so a heat sink is often installed on the chip. Also called 486DX, 80486. See also heat sink, i486DX, microprocessor. Compare OverDrive.
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