CenturyLink vs Xfinity (Comcast)
Full speed comparison based on 1,411 verified measurements.
CenturyLink
192 Mbps
107 Mbps
51 ms
Xfinity (Comcast)
WINNER348 Mbps
80 Mbps
33 ms
Speed Difference Summary
Download difference
156 Mbps
Xfinity (Comcast) is faster
Upload difference
27 Mbps
CenturyLink is faster
Ping difference
18 ms
Xfinity (Comcast) has lower latency
By Country
Head-to-head comparison where both ISPs have user data.
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See if your connection matches the CenturyLink or Xfinity (Comcast) average.
How CenturyLink Compares to Xfinity (Comcast)
Based on 1,411 verified speed tests from CenturyLink and Xfinity (Comcast) customers, Xfinity (Comcast) delivers faster average speeds.
CenturyLink averages 192 Mbps download with 107 Mbps upload and 51 ms ping. Xfinity (Comcast) averages 348 Mbps download with 80 Mbps upload and 33 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.