Is Cox or Optimum faster?

Based on 475 verified speed tests, Cox is faster overall. Cox averages 337 Mbps download, Optimum averages 389 Mbps download.

What is the average speed difference between Cox and Optimum?

The average download speed difference is 52 Mbps. Upload speed difference is 3 Mbps. Ping difference is 8 ms.

Should I choose Cox or Optimum?

It depends on your use case. Cox offers faster average speeds, but actual performance varies by location and plan. Test your current connection and compare to both averages before switching.

Cox vs Optimum

Full speed comparison based on 475 verified measurements.

Overall Winner: Cox

Cox

WINNER

Download

337 Mbps

Upload Wins

86 Mbps

Ping Wins

28 ms

Based on 295 measurements · Full Cox stats →

Optimum

Download Wins

389 Mbps

Upload

83 Mbps

Ping

36 ms

Based on 180 measurements · Full Optimum stats →

Speed Difference Summary

Download difference

52 Mbps

Optimum is faster

Upload difference

3 Mbps

Cox is faster

Ping difference

8 ms

Cox has lower latency

By Country

Head-to-head comparison where both ISPs have user data.

United States Optimum wins

Cox 339 Mbps (293 tests)

Optimum 389 Mbps (180 tests)

Test your own speed

See if your connection matches the Cox or Optimum average.

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How Cox Compares to Optimum

Based on 475 verified speed tests from Cox and Optimum customers, Cox delivers faster average speeds.

Cox averages 337 Mbps download with 86 Mbps upload and 28 ms ping. Optimum averages 389 Mbps download with 83 Mbps upload and 36 ms ping.

Averages tell only part of the story — actual speeds vary by your specific plan, location, time of day, and whether you use Ethernet or Wi-Fi. Run a speed test on your current connection to see how it compares to both averages before making a switching decision.

Cox speed Optimum speed All ISPs Country speeds