CPU Information
| General information |
| Type | CPU / Microprocessor |
| Family | Intel 80486 |
| CPU part number | A80486SX-20 (SX406, SX467, SX492, SX678, SXE63) |
| Frequency (MHz) ? | 20 |
| Bus speed (MHz) ? | 20 |
| Clock multiplier ? | 1 |
| Package | 168-pin Pin Grid Array
1.75" x 1.75" (4.45 cm x 4.45 cm) |
| Introduction date | 16-Sep-91 |
| Upgrade options | - Use Intel ODP486SX-20, ODPR486SX-20, SX2ODP50, SX2ODPR50, DX2ODP50 or DX2ODP50 to upgrade to 40 MHz
- Use Intel DX4ODP75 or DX4ODPR75 to upgrade to 60 MHz
- Use Intel PODP5V63 to upgrade to Pentium 50 MHz
- See 80486 upgrade matrix for more information.
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| | | Architecture / Microarchitecture |
| Data width | 32 bit |
| Floating Point Unit | 80487SX co-processor |
| Level 1 cache size ? | 8 KB 4-way set associative unified code and data cache |
| Physical memory (GB) | 4 |
| Virtual memory (TB) | 64 |
| On-chip peripherals | Memory management unit |
| | | Electrical/Thermal parameters |
| V core (V) ? | 5 ± 5% |
| Minimum/Maximum operating temperature (°C) ? | 0 - 85 |
| Typical/Maximum power dissipation (W) | 2.25 / 2.78 |
Pictures (1)
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| Intel A80486SX-20 |
20 MHz
168-pin ceramic PGA |
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