Processor
Intel 80286
The protected-mode 16 bit successor to the 8086, normally paired with an optional 80287 floating-point coprocessor.
- Manufacturer
- Intel
- Architecture
- 80286
- Introduced
- February 1982
- Word size
- 16 bit
- Core count
- 1
- Contextual value
- 5 V
- Contextual value
- 3.15 W
- Contextual value
- 3.3 W
- Instruction set
- Intel 80286
- 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 | 12.5 MHz | Confirmed | Vendor-rated | Nominal clock Stated by the vendor Intel's speed-grade table lists three variants. This reference configuration uses the fastest one; it is not a single, named PC model. | |
| Dhrystone MIPS per MHz cpu provisional | 0.135 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 80286 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 80286 has no integrated floating-point unit; an 80287 would be a separately fitted 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, and this is the one period x86 part whose datasheet does print a wattage: 3.3 W. It prints it under ABSOLUTE MAXIMUM RATINGS, beside a warning that these are stress ratings only and that operation beyond the Operating Conditions is not recommended — a limit past which the part is damaged, not a target a cooling solution is designed to. The operating specification for what this processor consumes is a current: 600 mA maximum at a 0°C turn-on. | Not stated | Vendor-rated | Rated power Stated by the vendor Kept unknown deliberately rather than for want of a document. Recording 3.3 W here would publish an absolute-maximum stress rating as a thermal design power, which is the same error as reading a power-supply rating off a nameplate and calling it a draw. The figure is not even independent of the current beside it — 600 mA at the top of the 5 V ±5% tolerance is 3.15 W — so it is that ceiling rounded up. Anyone who quotes 3.3 W for an 80286 is quoting this line. |