Gigabit ISPs: Real World Usage vs. Speed Tests

One of the things I talked about recently in my Gigabit Pro update video is that even though you have the bandwidth you likely will never make full use of it on any single task.

Sure it’s possible to run a speed test to fully saturate the connection as I have done many times, but when doing real world tasks things work differently. So even though I have a full six gigabits available, I’m usually only getting about half a gigabit to each location I’m sending data to.

The image above was taken from my Unifi app as I was uploading an 8.7 GB video to YouTube and Floatplane simultaneously. Each can only take about 500-600 megabits per second.

Remember the Internet is not one network. So it’s possible that within Comcast’s infrastructure I can utilize the full bandwidth. But once we cross outside the network it depends on how different networks interoperate and what kinds of bandwidth they allow across those crossing points. In some cases there are multiple networks to traverse!

New Video: Comcast Doubles “Gigabit Pro” Speeds to 6 Gigabits Per Second

About a year and a half ago I installed Comcast’s fiber optic Gigabit Pro service at my home. I documented the process over the course of several weeks that you can see on this playlist.

When the service was first installed in October of 2020 it offered a 2 gigabit connection over an SFP+ circuit along with a second 1 gigabit RJ45 circuit. A few months later they increased the SFP+ speed to 3 gigabits.

This past week Comcast announced they were upping the speed again, this time doubling it to a full 6 gigabits per second over the SFP+ while still maintaining the 1 gig circuit for a total of 7.

But what can you do with that amount of bandwidth realistically? Well, it largely depends on what you’re looking to do along with network conditions and interoperability agreements.

As you’ll see in this week’s Weekly Wrapup, it’s relatively easy to hit the full speed when running a speed test to one of Comcast’s servers, but it’s harder to reach those speeds when testing servers on networks outside of Comcast’s infrastructure. For example when I upload YouTube videos rarely do I see the connection hit 1 gigabit, let alone 6.

Still having a multigigabit connection has been a real game changer for my workflow. I’m very happy with the service reliability and the dramatic reduction in upload times for my videos.