An Intel i486DX2-66 Microprocessor, top view

... and bottom view with gold plated pins.

The Intel 80486DX2 is a CPU produced by Intel that was introduced in 1992. The 80486DX2 is identical to the 80486DX but for the addition of "clock doubling" technology. It was the first chip to use clock doubling, whereby the processor performs two clock cycles per single cycle of the memory bus. Essentially, the processor's speed is set to double of the speed of the system bus. Because of this, an Intel 80486DX2 is faster than an 80486DX-based system at the same bus speed; a normal DX chip performs one processor clock cycle per system bus cycle, while a DX2 chip performs two processor clock cycles per bus cycle. Image File history File links Download high resolution version (1110x908, 154 KB) Intel 80486DX CPU. Top view with screen printed logo and component ID markings. ... Image File history File links Download high resolution version (1110x908, 154 KB) Intel 80486DX CPU. Top view with screen printed logo and component ID markings. ... Image File history File links Download high resolution version (1110x908, 201 KB) Intel 80486DX CPU. Bottom view with gold plated pins Photograph © Andrew Dunn, 9 November 2005. ... Image File history File links Download high resolution version (1110x908, 201 KB) Intel 80486DX CPU. Bottom view with gold plated pins Photograph © Andrew Dunn, 9 November 2005. ... CPU redirects here. ... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is an American multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... 1992 (MCMXCII) was a leap year starting on Wednesday. ... The Intel 80486DX is a microprocessor made by Intel x86 family of processors. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Integrated circuit showing memory blocks, logic and input/output pads around the periphery A monolithic integrated circuit (also known as IC, microchip, silicon chip, computer chip or chip) is a miniaturized electronic circuit (consisting mainly of semiconductor devices, as well as passive components) which has been manufactured in the surface... In synchronous digital electronics, such as most computers, a clock signal is a signal used to coordinate the actions of two or more circuits. ...

It is now standard practice for a CPU to perform more than one clock cycle per bus clock cycle.

For many players of video games during the early and mid 1990's, towards the end of the MS-DOS gaming era, the 80486DX2-66 is a popular processor. Often coupled with 8 MB or 16 MB of RAM and a VESA Local Bus video card, the CPU was quite capable of playing nearly every title available for several years, making it a "sweet spot" in CPU performance and longetivity. Towards the end of its lifespan, with the introduction of 3D graphics, the DX2-66 started to fall behind because of its scalar nature and limited floating point performance. The popular first person shooter Quake spelled the end of the 486's gaming reign because the game heavily used floating point calculations, and was optimized for the significantly faster pipelined floating point unit within Pentium. Performance on even the fastest 486s (133 MHz +) was quite poor. [1] This article is about computer and video games. ... Microsofts disk operating system, MS-DOS, was Microsofts implementation of DOS, which was the first popular operating system for the IBM PC, and until recently, was widely used on the PC compatible platform. ... The VESA Local Bus (usually shortened to VLB) is a local bus defined by the Video Electronics Standards Association, mostly used in personal computers based on the Intel 80486 CPU. VESA Local Bus worked alongside the ISA bus; it acted as a high-speed conduit for memory-mapped I/O... A sweet spot is a place, often numerical as opposed to physical, where a combination of factors suggest a particularly suitable solution. ... A floating-point number is a digital representation for a number in a certain subset of the rational numbers, and is often used to approximate an arbitrary real number on a computer. ... A first-person shooter (FPS) is a computer or video game where the players on-screen view of the game world simulates that of the character, and there is some element of shooting involved. ... Zombies attacking the player. ... Pentium logo, with MMX enhancement The Pentium is a fifth-generation x86 architecture microprocessor by Intel. ...

AMD and Cyrix both produced 486-level competition for the Intel 486DX2. AMD Am486 Microprocessor The Am486 was a 80486-class family of computer processors that were produced by AMD in the 1990s. ... Cyrix corporate logo Cyrix was a CPU manufacturer that began in 1988 as a specialist supplier of high-performance math co-processors for 286 and 386 systems. ...

80486DX2

Image File history File links Download high resolution version (1341x1002, 803 KB) Summary Macro shot of an Intel 80486DX2 die in its packaging. ... Image File history File links Download high resolution version (1341x1002, 803 KB) Summary Macro shot of an Intel 80486DX2 die in its packaging. ...