Intel 80486
E163312
The Intel 80486 is a fourth-generation x86 microprocessor that integrated an FPU and cache on-chip, significantly improving performance over earlier 386 CPUs and becoming a popular processor for early 1990s personal computers.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Intel 80486 canonical | 3 |
| 80486 OverDrive | 1 |
| 80486DX | 1 |
| 80486DX4 | 1 |
| 80486SL | 1 |
| Intel 486 | 1 |
| i486 | 1 |
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
fourth-generation x86 processor
ⓘ
microprocessor ⓘ x86 microprocessor ⓘ |
| addressBusWidth | 32-bit ⓘ |
| architecture | x86 ⓘ |
| cacheType | on-chip L1 cache ⓘ |
| compatibleWith |
MS-DOS
ⓘ
Windows 3.x ⓘ early Windows 95 systems ⓘ |
| dataBusWidth | 32-bit ⓘ |
| DX2VariantFeature | clock-doubled core ⓘ |
| DX4VariantFeature | clock-tripled core ⓘ |
| DXVariantFeature | integrated FPU ⓘ |
| family |
Intel 80486
self-linksurface differs
ⓘ
surface form:
Intel 486
|
| firstModelClockSpeed | 25 MHz ⓘ |
| instructionSet | IA-32 ⓘ |
| integratedComponent |
floating-point unit
ⓘ
memory management unit ⓘ on-chip cache ⓘ |
| introduced | 1989 ⓘ |
| manufacturer |
Intel Corporation
ⓘ
surface form:
Intel
|
| marketedAs |
486
ⓘ
Intel 80486 self-linksurface differs ⓘ
surface form:
i486
|
| marketImpact | popular CPU for early 1990s PCs ⓘ |
| notableCompetitor |
AMD 486
ⓘ
Cyrix 486 ⓘ |
| package |
PGA
ⓘ
PQFP ⓘ |
| performanceImprovementOver | Intel 80386 ⓘ |
| performanceImprovementReason |
integrated FPU
ⓘ
on-chip cache ⓘ pipelined design ⓘ |
| pipelineStages | 5-stage pipeline ⓘ |
| predecessor | Intel 80386 ⓘ |
| processTechnology |
0.6 µm
ⓘ
0.8 µm ⓘ 1.0 µm ⓘ |
| successor | Intel Pentium ⓘ |
| supports |
on-chip FPU (in DX variants)
ⓘ
paging ⓘ protected mode ⓘ virtual 8086 mode ⓘ |
| SXVariantFeature | FPU disabled or absent ⓘ |
| transistorCount | approximately 1.2 million (DX) ⓘ |
| typicalClockSpeedRange | 20 MHz to 100 MHz ⓘ |
| usedIn |
IBM PC compatible systems
ⓘ
early 1990s personal computers ⓘ |
| variant |
Intel 80486
self-linksurface differs
ⓘ
surface form:
80486 OverDrive
Intel 80486 self-linksurface differs ⓘ
surface form:
80486DX
80486DX2 ⓘ Intel 80486 self-linksurface differs ⓘ
surface form:
80486DX4
Intel 80486 self-linksurface differs ⓘ
surface form:
80486SL
80486SX ⓘ |
| wordSize | 32-bit ⓘ |
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Intel 486
subject surface form:
Intel 804486
this entity surface form:
i486
this entity surface form:
80486DX
this entity surface form:
80486DX4
this entity surface form:
80486SL
this entity surface form:
80486 OverDrive