| General information |
| Type | CPU / Microprocessor |
| Family | Intel 80486 |
| CPU part number | A80486DX-50 is an OEM/tray microprocessor |
| Frequency (MHz) ? | 50 |
| Bus speed (MHz) ? | 50 |
| Clock multiplier ? | 1 |
| Package | 168-pin Pin Grid Array
1.75" x 1.75" (4.45 cm x 4.45 cm) |
| Introduction date | 24-Jun-91 |
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| S-spec numbers |
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| Architecture / Microarchitecture |
| Microarchitecture | i486 |
| CPUIDs | 411 (SX546) 413 (SX710) |
| Manufacturing process | 1 micron
1.2 million transistors |
| Data width | 32 bit |
| Floating Point Unit | Integrated |
| 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 |
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| Electrical/Thermal parameters |
| V core (V) ? | 5 ± 5% |
| Minimum/Maximum operating temperature (°C) ? | 0 - 85 |
| Typical/Maximum power dissipation (W) | 4 / 5.25 |
Problems with 50MHz 486
From what I can remember, the first batch of 50MHz 486DX chips had some serious heat issues, and I believe intel issued a recall. I am pretty certain Intel switched production of the 50MHz part over to a smaller die size to fix the problem.
50MHz parts were only popular with ISA and EISA systems. It was very hard to build a 50MHz VLB or PCI system. Therefore the 50MHz DX/2s are far more common.