Processor
Intel 80386DX
The full-bus 32 bit 80386, adding 32 bit registers, paging and a 32 bit external data path to x86 PCs.
- Manufacturer
- Intel
- Architecture
- 80386
- Introduced
- October 1985
- Word size
- 32 bit
- Frequency
- 50 MHz
- Core count
- 1
- Instruction set
- Intel 80386
- Record status
- provisional
Figures
provisional A figure marked provisional is recorded but not accepted: its evidence is unsettled. It may rely on one source, an unconfirmed announcement, or a digit read from a damaged scan. The reason appears under the figure. The catalog shows the figure but never uses it in a multiplier. How records are judged.
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Clock frequency cpu provisional | 25 MHz | Confirmed | Vendor-rated | Nominal clock Stated by the vendor This figure remains provisional until the cited source is corroborated for the exact configuration. | |
| Dhrystone MIPS per MHz cpu provisional | 0.31 DMIPS/MHz | Reported | Measured | Benchmark run Published independently dhrystone 2.1 A named historic Dhrystone 2.1 result, normalized by the run clock; the one-source result remains provisional. |
3 documented absences
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Clock frequency cpu provisional | not applicable The 80386DX predates dynamic turbo modes. | Not stated | Vendor-rated | Peak clock Stated by the vendor This figure remains provisional until the cited source is corroborated for the exact configuration. | |
| Peak FP32 rate cpu provisional | not applicable The 80386DX has no integrated floating-point unit; an 80387 would be a separate coprocessor. | Not stated | Vendor-rated | Theoretical peak Stated by the vendor This figure remains provisional until the cited source is corroborated for the exact configuration. | |
| Thermal design power cpu provisional | unknown The absence is real and now documented. The datasheet's DC characteristics specify a supply current for each speed grade — 320 mA maximum against 240 mA typical for the 25 MHz part — and no power figure. The current is quoted against a 50 MHz CLK2 input, which is twice the processor's own frequency, so even the inputs to an unauthorized derivation are easy to misread. | Not stated | Vendor-rated | Rated power Stated by the vendor Checked against the part's own datasheet rather than against a general history. What Intel published for this generation is an electrical limit, not a thermal-design target, and the two are different quantities however similar the arithmetic looks. |