Is Cox or Optimum faster?

Based on 521 verified speed tests, Cox is faster overall. Cox averages 344 Mbps download, Optimum averages 387 Mbps download.

What is the average speed difference between Cox and Optimum?

The average download speed difference is 43 Mbps. Upload speed difference is 1 Mbps. Ping difference is 9 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 521 verified measurements.

Overall Winner: Cox

Cox

WINNER

Download

344 Mbps

Upload Wins

82 Mbps

Ping Wins

27 ms

Based on 336 measurements · Full Cox stats →

Optimum

Download Wins

387 Mbps

Upload

81 Mbps

Ping

36 ms

Based on 185 measurements · Full Optimum stats →

Speed Difference Summary

Download difference

43 Mbps

Optimum is faster

Upload difference

1 Mbps

Cox is faster

Ping difference

9 ms

Cox has lower latency

By Country

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

United States Optimum wins

Cox 346 Mbps (334 tests)

Optimum 387 Mbps (185 tests)

Test your own speed

See if your connection matches the Cox or Optimum average.

Run Speed Test

How Cox Compares to Optimum

Based on 521 verified speed tests from Cox and Optimum customers, Cox delivers faster average speeds.

Cox averages 344 Mbps download with 82 Mbps upload and 27 ms ping. Optimum averages 387 Mbps download with 81 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