Semiconductor & Computer Engineering
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i486DX-25 - Intel
| Edit Values | |
| 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 |
| Vcore | 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
Cache
- 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
This chip had no integrated graphics processing unit.
Features
- System Management Mode (SMM)
See also
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) + |
