Intel 486DX - definição. O que é Intel 486DX. Significado, conceito
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O que (quem) é Intel 486DX - definição

FAMILY OF 32-BIT MICROPROCESSORS INTRODUCED IN 1989, INCLUDING DX, SX AND SL MODELS
Intel 80486DX; 80486; Intel 486; Intel I486; 486 DX; 486DX; 80486DX; 80486SX; 486 processor; 486dx; Intel i486; Intel 80486 (microarchitecture); Intel i486 (Processor); 486 (PC); 486 (Intel); 486 (computing); 486 (computer); 80-486; SL-enhanced 486; I80486; 486 (CPU); Intel 80486; I486DX
  • The 486DX2 architecture
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  • first 486 system from the UK]] on the cover of BYTE, September 1989
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  • STMicroelectronics' ST ST486DX2-40
  • [[UMC Green CPU]] U5SX
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Intel 486DX      
<processor> 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. (1995-05-09)
i486         
80486         

Wikipédia

I486

The Intel 486, officially named i486 and also known as 80486, is a microprocessor. It is a higher-performance follow-up to the Intel 386. The i486 was introduced in 1989. It represents the fourth generation of binary compatible CPUs following the 8086 of 1978, the Intel 80286 of 1982, and 1985's i386.

It was the first tightly-pipelined x86 design as well as the first x86 chip to include more than one million transistors. It offered a large on-chip cache and an integrated floating-point unit.

A typical 50 MHz i486 executes around 40 million instructions per second (MIPS), reaching 50 MIPS peak performance. It is approximately twice as fast as the i386 or i286 per clock cycle. The i486's improved performance is thanks to its five-stage pipeline with all stages bound to a single cycle. The enhanced FPU unit on the chip was significantly faster than the i387 FPU per cycle. The intel 80387 FPU ("i387") was a separate, optional math coprocessor that was installed in a motherboard socket alongside the i386.

The i486 was succeeded by the original Pentium.