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Why are actual download speeds 20x slower than what is shown by the service provider?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Jan 22, 2026 · Updated Apr 13, 2026

They aren't unless your service provider is an asshole that hugely oversells capacity. But they usually *are* 8x slower than most people expect. That's not because of anything deceptive or misleading on the ISP's end, it's because people don't know the difference between Mb (megabit) and MB (mega…

71
Words

1 min
Read Time

#227
of 500 in Technology

-5%
vs Category Avg

The Short Answer

They aren't unless your service provider is an asshole that hugely oversells capacity. But they usually *are* 8x slower than most people expect. That's not because of anything deceptive or misleading on the ISP's end, it's because people don't know the difference between Mb (megabit) and MB (megabyte). A megabyte is eight times larger than a megabit; ISPs generally advertise speed in bits, but file size is usually expressed in bytes.

Analysis

Key Concepts: Usually, people, megabit

This explanation focuses on usually, people, megabit and spans 71 words across 4 sentences. The depth is typical for Technology questions (category average: 75 words), striking a balance between accessibility and completeness.

What This Answer Covers

The explanation opens with: “They aren't unless your service provider is an asshole that hugely oversells capacity.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 4 connected points.

How This Compares in Technology

Ranked #227 of 500 Technology questions by answer depth (top 46%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.

Frequently Asked Questions

Is there a simple explanation for why actual download speeds 20x slower than what is shown by the service provider?

They aren't unless your service provider is an asshole that hugely oversells capacity. But they usually *are* 8x slower than most people expect. That's not because of anything deceptive or misleading on the ISP's end, it's because people don't know…

How detailed is this explanation compared to similar Technology questions?

This is an above-average answer at 71 words, ranked #227 of 500 Technology questions by depth. The key concepts covered are usually, people, megabit.

What approach does this answer take to explain actual download speeds 20x slower than what is shown by the ?

The explanation uses root cause analysis and contrasting perspectives across 71 words. It is categorized under Technology and addresses the question through 2 analytical lenses.