Fast 10
- n. Faux speed index of a 486/33 machine. Originally just “10” until someone realized that both 386/25’s and 386SX/16’s are also “10’s.” (To compute the faux speed index of a machine, add the chip generation number and the two digits of the oscillator frequency designation. Common values are listed below.)
| Generation / Speed | Faux Speed Index |
|---|---|
| 486/66 | 16 |
| 486/50 | fast 9 |
| 486/33 | fast 10 |
| 486/25 | 11 |
| 386/33 | slow 9 |
| 386/25 | slow 10 |
| 386/16 | super-slow 10 |
| 8086/4.77 | 4 |