Am486DX-40 vs i486SX-20
Primary details
Comparing i486SX-20 and Am486DX-40 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel 80486 | AMD Am486 |
| Architecture codename | 80486 (1989) | 80486 (1989) |
| Release date | no data | no data |
Detailed specifications
i486SX-20 and Am486DX-40 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 1 (Single-Core) | 1 (Single-Core) |
| Boost clock speed | 0.02 GHz | 0.04 GHz |
| Bus type | FSB | FSB |
| Bus rate | 20 MT/s | 40 MT/s |
| Multiplier | 1 | 1 |
| L1 cache | 8 KB | 8 KB |
| Chip lithography | 1 µm, 800 nm | 700 nm |
| Die size | no data | 89 mm2 |
| Number of transistors | 1 Million | 1 Million |
| 64 bit support | - | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by i486SX-20 and Am486DX-40. Depending on the motherboard, higher memory frequencies may be supported.
| Maximum memory size | 4 GB | 4 GB |
Pros & cons summary
| Chip lithography | 1 nm | 700 nm |
i486SX-20 has a 69900% more advanced lithography process.
We couldn't decide between i486SX-20 and Am486DX-40. We've got no test results to judge.
Be aware that i486SX-20 is a notebook processor while Am486DX-40 is a desktop one.
Should you still have questions on choice between i486SX-20 and Am486DX-40, ask them in Comments section, and we shall answer.
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