Browse Definitions:
Definition

Intel 80486

Contributor(s): Matthew Haughn

Intel 80486, also known as i486 or just 486, is the fourth-generation generation Intel x86 microprocessor.

The 80486 was capable of over 40 million instructions per second (MIPS) and offered roughly twice the performance of the 386. It featured an 8K cache for storing recent instructions. Tighter pipelining allowed for a complete simple instruction per clock cycle as compared to the two clock cycles required for a 386. An integrated floating point unit (FPU) gave faster floating point operations than 386 with a 387 math coprocessor.

Introduced in April 1989, the 80486 followed Intel’s 8086, 80286 and 80386 processors. 486 processor models, ranging in speeds from 16Mhz to 100Mhz, include: i486DX, i486SL, i486SX, i486DX2, i486DX-S, i486DX2-S, i486SX-S, i486SX2, i486DX2WB, i486GX. Intel’s main competitor AMD offered 486-compatible processors at speeds up to 133Mhz.

This was last updated in February 2014

Continue Reading About Intel 80486

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces.

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

SearchSecurity

  • FIDO (Fast Identity Online)

    FIDO (Fast ID Online) is a set of technology-agnostic security specifications for strong authentication. FIDO is developed by the...

  • cryptanalysis

    Cryptanalysis is the study of ciphertext, ciphers and cryptosystems with the aim of understanding how they work and finding and ...

  • Trojan horse (computing)

    In computing, a Trojan horse is a program that appears harmless, but is, in fact, malicious.

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

  • personal cloud storage (PCS)

    Personal cloud storage (PCS) enables users to store data, photos, music, videos and other files on a local network-attached ...

  • cloud SLA (cloud service-level agreement)

    A cloud SLA (cloud service-level agreement) is an agreement between a cloud service provider and a customer that ensures a ...

  • wear leveling

    Wear leveling is a process that is designed to extend the life of solid-state storage devices.

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close