Semiconductor & Computer Engineering
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i486SX-25 - Intel
| Edit Values | |
| Intel i486SX-25 | |
 | |
| A80486SX-25, S-Spec SX679 | |
| General Info | |
| Designer | Intel |
| Manufacturer | Intel |
| Model Number | i486SX-25 |
| Part Number | A80486SX-25, KU80486SX-25, SB80486SX-25, FA80486SX-25 |
| S-Spec | SX411, SX468, SX514, SX586, SX673, SX676, SX683, SX763, SX779, SX788, SX792, SX800, SX852, SX934, SX679, SX693, SX719, SX790, SX798, SX826, SX838, SX846, SX903, SX930 Q0152 (QS), Q0186 (QS) |
| Introduction | September 16, 1991 (launched) |
| Shop | Amazon |
| General Specs | |
| Family | 80486 |
| Series | 486SX |
| Frequency | 25 MHz |
| Bus type | FSB |
| Bus speed | 25 MHz |
| Bus rate | 25 MT/s |
| Clock multiplier | 1 |
| CPUID | 420, 422, 423, 427, 428, 42A |
| Microarchitecture | |
| Microarchitecture | 80486 |
| Core Name | 486SX |
| Process | 1 µm, 800 nm |
| Transistors | 1,185,000 |
| Technology | CMOS |
| Word Size | 32 bit |
| Cores | 1 |
| Max Memory | 4 GiB |
| Multiprocessing | |
| Max SMP | 1-Way (Uniprocessor) |
| Electrical | |
| Power dissipation | 2.2 W |
| Vcore | 5 V ± 5% |
| OP Temperature | 0 °C – 85 °C |
i486SX-25 was a fourth-generation x86 microprocessor introduced by Intel in 1991. This chip, which is based on the 80486 microarchitecture, operated at 25 MHz. In contrast to the i486DX chips, the i486SX line had no functional FPU on-die.
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)
Gallery
A80486SX-25, S-Spec SX798
A80486SX-25, S-Spec SX679
A80486SX-25, S-Spec SX673
See also
Facts about "i486SX-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 | 486SX + |
| core voltage | 5 V (50 dV, 500 cV, 5,000 mV) + |
| core voltage tolerance | 5% + |
| cpuid | 420 +, 422 +, 423 +, 427 +, 428 + and 42A + |
| designer | Intel + |
| family | 80486 + |
| first launched | September 16, 1991 + |
| full page name | intel/80486/486sx-25 + |
| instance of | microprocessor + |
| l1$ description | 4-way set associative + |
| l1$ size | 8 KiB (8,192 B, 0.00781 MiB) + |
| ldate | September 16, 1991 + |
| main image |  + |
| main image caption | A80486SX-25, S-Spec SX679 + |
| 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 | i486SX-25 + |
| name | Intel i486SX-25 + |
| part number | A80486SX-25 +, KU80486SX-25 +, SB80486SX-25 + and FA80486SX-25 + |
| power dissipation | 2.2 W (2,200 mW, 0.00295 hp, 0.0022 kW) + |
| process | 1,000 nm (1 μm, 0.001 mm) + and 800 nm (0.8 μm, 8.0e-4 mm) + |
| s-spec | SX411 +, SX468 +, SX514 +, SX586 +, SX673 +, SX676 +, SX683 +, SX763 +, SX779 +, SX788 +, SX792 +, SX800 +, SX852 +, SX934 +, SX679 +, SX693 +, SX719 +, SX790 +, SX798 +, SX826 +, SX838 +, SX846 +, SX903 + and SX930 + |
| s-spec (qs) | Q0152 + and Q0186 + |
| series | 486SX + |
| smp max ways | 1 + |
| technology | CMOS + |
| transistor count | 1,185,000 + |
| word size | 32 bit (4 octets, 8 nibbles) + |
