i486DX-25 - Intel - WikiChip

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i486DX-25 - Intel

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Intel i486DX-25

A80486DX-25, S-Spec SX328
General Info
Designer	Intel
Manufacturer	Intel
Model Number	i486DX-25
Part Number	A80486-25, A80486DX-25, MA80486DX-25, MG80486DX-25, MQ80486DX-25
S-Spec	SX250, SX300, SX308, SX328, SX418, SX493, SX728 Q0143 (QS)
Introduction	June, 1989 (launched)
Shop	Amazon
General Specs
Family	80486
Series	486DX
Frequency	25 MHz
Bus type	FSB
Bus speed	25 MHz
Bus rate	25 MT/s
Clock multiplier	1
CPUID	401, 402, 404
Microarchitecture
Microarchitecture	80486
Core Name	486DX
Process	1 µm, 800 nm
Transistors	1,200,000
Technology	CMOS
Word Size	32 bit
Cores	1
Max Memory	4 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Power dissipation	2.75 W
V_core	5 V ± 5%
OP Temperature	0 °C – 85 °C

i486DX-25 was a fourth-generation x86 microprocessor introduced by Intel in 1989. This chip, which is based on the 80486 microarchitecture, operated at 25 MHz. This chip implemented the 80387 FPU on-die and incorporated System Management Mode (SMM).

Contents

1 Cache
2 Graphics
3 Features
4 See also

Cache[edit]

Main article: 80486 § Cache

Cache Info [Edit Values]
L1$	8 KiB 8,192 B 0.00781 MiB	1x8 KiB 4-way set associative (unified, write-through policy)

Graphics[edit]

This chip had no integrated graphics processing unit.

Features[edit]

System Management Mode (SMM)

See also[edit]

80486 family

Retrieved from "https://en.wikichip.org/w/index.php?title=intel/80486/486dx-25&oldid=70359"

Facts about "i486DX-25 - Intel"

base frequency	25 MHz (0.025 GHz, 25,000 kHz) +
bus rate	25 MT/s (0.025 GT/s, 25,000 kT/s) +
bus speed	25 MHz (0.025 GHz, 25,000 kHz) +
bus type	FSB +
clock multiplier	1 +
core count	1 +
core name	486DX +
core voltage	5 V (50 dV, 500 cV, 5,000 mV) +
core voltage tolerance	5% +
cpuid	401 +, 402 + and 404 +
designer	Intel +
family	80486 +
first launched	June 1989 +
full page name	intel/80486/486dx-25 +
instance of	microprocessor +
l1$ description	4-way set associative +
l1$ size	8 KiB (8,192 B, 0.00781 MiB) +
ldate	June 1989 +
main image	+
main image caption	A80486DX-25, S-Spec SX328 +
manufacturer	Intel +
max cpu count	1 +
max memory	4,096 MiB (4,194,304 KiB, 4,294,967,296 B, 4 GiB, 0.00391 TiB) +
max operating temperature	85 °C +
microarchitecture	80486 +
min operating temperature	0 °C +
model number	i486DX-25 +
name	Intel i486DX-25 +
part number	A80486-25 +, A80486DX-25 +, MA80486DX-25 +, MG80486DX-25 + and MQ80486DX-25 +
power dissipation	2.75 W (2,750 mW, 0.00369 hp, 0.00275 kW) +
process	1,000 nm (1 μm, 0.001 mm) + and 800 nm (0.8 μm, 8.0e-4 mm) +
s-spec	SX250 +, SX300 +, SX308 +, SX328 +, SX418 +, SX493 + and SX728 +
s-spec (qs)	Q0143 +
series	486DX +
smp max ways	1 +
technology	CMOS +
transistor count	1,200,000 +
word size	32 bit (4 octets, 8 nibbles) +