Editing Intel i860 (section)

{{distinguish|text=[[List of Intel chipsets#Pentium 4 chipsets|Intel 860 chipset]]}}
{{short description|Microprocessor design by Intel}}
{{Infobox CPU architecture
| name       = Intel i860
| designer   = [[Intel]]
| bits       = 32/64-bit
| introduced = 1989
| design     = [[RISC]], [[VLIW]]
| type       = [[Load–store]]
| encoding   = Fixed
| branching  = Compare and branch
| endianness = [[Bi-endian|Bi]] (switchable)
| page size  = 4 KB
| extensions = 64-bit graphics unit
| gpr        = 32 32-bit
| fpr        = 32 32-bit (16 64-bit)
}}

The '''Intel i860''' (also known as '''80860''') is a [[RISC]] [[microprocessor]] design introduced by [[Intel]] in 1989. It is one of Intel's first attempts at an entirely new, high-end [[instruction set architecture]] since the failed [[Intel iAPX 432]] from the beginning of the 1980s. It was the world's first million-transistor chip.<ref name=":0">{{Cite web |last=Perry |first=Tekla |date=2022-07-02 |title=The First Million-Transistor Chip: the Engineers' Story |url=https://spectrum.ieee.org/intel-i860 |url-status=live |archive-url=https://web.archive.org/web/20220705003416/https://spectrum.ieee.org/intel-i860 |archive-date=2022-07-05 |access-date=2022-07-05 |website=[[IEEE Spectrum]] |language=en}}</ref> It was released with considerable fanfare, slightly obscuring the earlier [[Intel i960]], which was successful in some niches of [[embedded system]]s. The i860 never achieved commercial success and the project was terminated in the mid-1990s.