Fermi question · Technology
About how many bits per second is the USB 2.0 Hi-Speed signaling rate?
Make a fast, defensible estimate before you reveal the reference answer. Think in factors, not exact recall.
What is your estimate?
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Reference answer
Reveal the reference answer
≈ 480 million bits per second
Fermi estimates are judged by scale, so a reasonable approximation can still earn a strong score.
One way to estimate it
Convert the familiar 480 megabits-per-second rating into bits per second.
- Hi-Speed rate480 megabits/second
- Bits per megabit1,000,000
- Estimate480 × 1,000,000 = 480M bits/s
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