Two hunderd and one point six

TL;DR

At a speed of 200 Mbps, Cloudflare is most accurate. Other fine speed tests are: Google Fiber, M-Lab and TestMy.net.

 

Contents

  1. Introduction
  2. Method of measurement
  3. Speed tests to test
  4. The measurements
  5. Conclusions
 

Introduction

For a short time our ISP delivered 200 Mbps. We know that in that case 201.6 Mbps is the correct value to measure.

 

Method of measurement

For this test the download speed is measured five times per speed test.

 

Speed tests to test

For this test the speed tests tested in the MB's used by a speed test test (at 200 Mbps) with the median between 200 and 206 Mbps are tested (these are the mainstream speed tests). We also test one realistic speed test.

 

The measurements

  1. Astound 206.00, 206.00, 207.00, 206.00, 205.00 Mbps, median: 206.00 Mbps, standard deviation: 0.7 Mbps, average 206.0 Mbps, precision 0.40%, accuracy score 91 Mainstream
  2. Bredbandskollen 205.18, 205.21, 205.50, 205.45, 205.00 Mbps, median: 205.21 Mbps, standard deviation: 0.2 Mbps, average 205.3 Mbps, precision 0.17%, accuracy score 94 Mainstream
  3. Cloudflare 201, 201, 202, 201, 202 Mbps, median: 201 Mbps, standard deviation: 0.5 Mbps, average 201.4 Mbps, precision 0.48%, accuracy score 100 Mainstream
  4. DSLReports 204.3, 207.5, 202.4, 207.0, 201.1 Mbps, median: 204.3 Mbps, standard deviation: 2.8 Mbps, average 204.5 Mbps, precision 2.23%, accuracy score 97 Mainstream
  5. Fireprobe 204.57, 204.11, 203.84, 204.34, 204.01 Mbps, median: 204.11 Mbps, standard deviation: 0.3 Mbps, average 204.2 Mbps, precision 0.22%, accuracy score 97 Mainstream
  6. Google Fiber 203, 204, 203, 204, 202 Mbps, median: 203 Mbps, standard deviation: 0.8 Mbps, average 203.2 Mbps, precision 0.64%, accuracy score 99 Mainstream
  7. M-Lab 202.97, 202.97, 202.69, 201.83, 202.73 Mbps, median: 202.73 Mbps, standard deviation: 0.5 Mbps, average 202.6 Mbps, precision 0.32%, accuracy score 99 Mainstream
  8. Meter.net 199.7, 199.5, 200.5, 201.3, 196.8 Mbps, median: 199.7 Mbps, standard deviation: 1.7 Mbps, average 199.6 Mbps, precision 1.13%, accuracy score 98 Mainstream
  9. N Perf 205.2, 205.0, 205.4, 205.4, 205.4 Mbps, median: 205.4 Mbps, standard deviation: 0.2 Mbps, average 205.3 Mbps, precision 0.14%, accuracy score 94 Mainstream
  10. Speedtest 204.08, 203.84, 204.34, 200.55, 203.3 Mbps, median: 203.84 Mbps, standard deviation: 1.5 Mbps, average 203.2 Mbps, precision 1.07%, accuracy score 98 Mainstream
  11. SamKnows 203, 204, 204, 204, 204 Mbps, median: 204 Mbps, standard deviation: 0.4 Mbps, average 203.8 Mbps, precision 0.32%, accuracy score 97 Mainstream
  12. SpeedOf.me API Sample Page 222.6, 221.97, 221.93, 222.43, 222.68 Mbps, median: 222.43 Mbps, standard deviation: 0.4 Mbps, average 222.3 Mbps, precision 0.30%, accuracy score 99 Realistic
  13. TestMy.net 203.4, 199.1, 200.1, 200.6, 200.9 Mbps, median: 200.6 Mbps, standard deviation: 1.6 Mbps, average 200.8 Mbps, precision 1.06%, accuracy score 99 Mainstream
  14. Xfinity xFi Speed Test 205.1, 205.3, 203.2, 204.4, 204.6 Mbps, median: 204.6 Mbps, standard deviation: 0.8 Mbps, average 204.5 Mbps, precision 0.58%, accuracy score 96 Mainstream
 

Conclusions

Based on the measurements above it can be concluded that:

  1. Only Cloudflare has an accuracy score of 100
  2. Four speed tests (Google Fiber, M-Lab, the SpeedOf.me API Sample Page and TestMy.net) have an accuracy score of 99
  3. Two speed tests (Meter.net and Speedtest) have an accuracy score of 98
  4. Almost all speed tests tested (13 out of 14) are mainstream speed tests

The best speed tests at 200 Mbps are:

  1. Cloudflare Mainstream
  2. Google Fiber Mainstream
  3. M-Lab Mainstream
  4. TestMy.net Mainstream