Intel CPU `v5.1.0`

Intel 486DX

major

5

minor

1

patch

0

486DX

suffix

—

No suffix

Metadata

Property	Value
Brand	Intel
Intel name	Intel 486DX
Generation	i486
Microarchitecture	i486 (pipelined, on-die FPU)
Performance class	DX
Released	1989-041989
Data width	32-bit
Address width	32-bit
Base clock	25 MHz
Max clock	50 MHz
Cache	8 KB L1
Transistors	1,200,000
Socket	Socket 1
Features	Protected mode Memory management unit 32-bit (IA-32) Paging Virtual 8086 mode On-die L1 cache On-die x87 FPU
Source	Curated (historical-cpus.json)

Uses (dependencies)

lithography: Intel Lithography v4.0.0 (1 µm CHMOS IV)

Used by (0)

Nothing depends on this version.

Changelog

Since the previous minor (lower performance class): Intel CPU `v5.0.0` (486SX)

Features

+On-die x87 FPU

Specifications

~Base clock: 16 MHz → 25 MHz
~Max clock: 33 MHz → 50 MHz
~Transistors: 1,185,000 → 1,200,000

Since the previous major (previous generation): Intel CPU `v4.1.0` (386DX)

Components

~Lithography v3.0.0 (1.5 µm CHMOS III) → Lithography v4.0.0 (1 µm CHMOS IV)

Features

+On-die L1 cache
+On-die x87 FPU

Specifications

~Microarchitecture: i386 (32-bit) → i486 (pipelined, on-die FPU)
~Base clock: 12 MHz → 25 MHz
~Max clock: 33 MHz → 50 MHz
+Cache: 8 KB L1
~Transistors: 275,000 → 1,200,000
−Package: 132-pin PGA