Is Optimum or Xfinity (Comcast) faster?

Based on 992 verified speed tests, Optimum is faster overall. Optimum averages 386 Mbps download, Xfinity (Comcast) averages 353 Mbps download.

What is the average speed difference between Optimum and Xfinity (Comcast)?

The average download speed difference is 33 Mbps. Upload speed difference is 22 Mbps. Ping difference is 4 ms.

Should I choose Optimum or Xfinity (Comcast)?

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

Optimum vs Xfinity (Comcast)

Full speed comparison based on 992 verified measurements.

Overall Winner: Optimum

Optimum

WINNER

Download Wins

386 Mbps

Upload Wins

110 Mbps

Ping

36 ms

Based on 91 measurements · Full Optimum stats →

Xfinity (Comcast)

Download

353 Mbps

Upload

88 Mbps

Ping Wins

32 ms

Based on 901 measurements · Full Xfinity (Comcast) stats →

Speed Difference Summary

Download difference

33 Mbps

Optimum is faster

Upload difference

22 Mbps

Optimum is faster

Ping difference

4 ms

Xfinity (Comcast) has lower latency

By Country

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

United States Optimum wins

Optimum 386 Mbps (91 tests)

Xfinity (Comcast) 353 Mbps (901 tests)

Test your own speed

See if your connection matches the Optimum or Xfinity (Comcast) average.

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How Optimum Compares to Xfinity (Comcast)

Based on 992 verified speed tests from Optimum and Xfinity (Comcast) customers, Optimum delivers faster average speeds.

Optimum averages 386 Mbps download with 110 Mbps upload and 36 ms ping. Xfinity (Comcast) averages 353 Mbps download with 88 Mbps upload and 32 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.

Optimum speed Xfinity (Comcast) speed All ISPs Country speeds