How do I do a GCI Broadband Speed Test?

July 26, 2016

Steps to Use Site

How to use GCI’s Speed Test Site

1. Go to


2. Ensure you are on Test My Speed tab. Site should default to this tab, but if not then click on Test My Speed.

GCI Speed Test

3. Click Begin Test.

4. You will see a latency test, and the application will start running the download portion of the test.

Latency Test

5. You see the download portion of the test continue.

Download Test

6. You will see the download portion of the test complete, with a speed result in the Download Column, and the upload test begin.

Download Test

7. You will see the Upload speed results in the Upload Column and then automatically go to the full results screen.

8. From this screen you can view your test results, restart the test, or review the FAQ’s.


GCI’s Minimum System Requirements for Internet

You can view the recommended minimum requirements on the Speed Test results screen. To view click on Considerations, then select article titled “What are the minimum system requirements for my Internet connection ?”

Frequently Asked Questions (FAQ)

You can view some Frequently Asked Questions, by clicking on the links on the Speed test page, or read below.

Getting Started

GCI Speed Test

What is a speed test and why would I use it? A speed test attempts to measure the maximum bandwidth – or how fast your computer can talk to a server on the Internet – by downloading and uploading files sample files and then measuring how much traffic was passed during a period of time.

How accurate is this speed test? The results of this speed test are an indication of the speed you get. The results depend on various factors including, but not limited to:

What is the best way to run a speed test? For best results you should connect your computer directly to your cable modem, without using a wireless router. All the connected devices within your home share that modem’s bandwidth and can impact the results. You could also restart your computer prior to the test to ensure no other programs are running in the background.


Why do different computers in my home get different results? Computer hardware, operating systems, and other software installed, processor speed, memory, and network interface card (NIC) can all impact speed test results.

Is my computer or local network affecting the speed test results? When measuring performance it is important to shutdown any unnecessary applications when conducting tests. In some cases, your firewall, antivirus software, Wi-Fi connection, Ethernet cabling, and additional hubs/routers/switches can cause a decrease in performance. In order to eliminate these potential issues, please try testing with your computer directly connected to your high-speed Internet modem. Speed tests run over a Wi-Fi connection are not recommended, but if you do choose to use  Wi-Fi during the test your results will likely not represent the full service you would get during a wired test.

How can I try and improve my results? If you would like to try and improve your speed test results, we recommend the following:

  • Perform speed tests with your computer directly connected to your modem. Bypass any routers (including Wi-Fi) by connecting your computer directly to the cable modem via an Ethernet cable (Cat 5E or above)
  • Use the computer with the fastest or most advanced hardware and software in your household to perform speed tests
  • Restart your computer and modem. Occasionally, electronic equipment needs to be restarted to function at its best. Follow these steps to reboot:
    1. If using a cable modem  unplug the power connection from the back of the modem for about 10 seconds and plug it back in. The modem will take a few minutes to come back online. You’ll know it’s online when the lights are solid green.
    2. Restart your computer
  • Scan for and remove any viruses and /or spyware from your computer

What does “speeds up to” mean? GCI, like many Internet Service Providers, cannot guarantee that specific speeds will always be achievable. While GCI provisions your service in their network to provide the maximum speed available with the plan you’ve chosen, a number of factors can affect that speed. Many of these factors are beyond GCI’s control. For example, the type of computer and other hardware you have, the applications running on your computer, even your Ethernet cabling can affect speed. In addition, the websites you visit, the capabilities of third party networks, and congestion on the Internet beyond GCI’s control may affect Internet speeds.

I’ve tried everything and the speed test results are still bad. What do I do now? If you feel there may be issues impairing your service, please contact GCI technical support at 868-0316 (Anchorage) or 1-800-800-4800 (Statewide). They have some tools to assist in identifying service-impacting issues.


Why are my speed test results slower on Wi-Fi than when directly connect to my modem? If there is a router between your modem and your computer, the connection speed you experience can often depend on the model and configuration of that router. Certain routers are able to pass data to your computer more quickly than others. For example, wireless routers using the 802.11g protocol are limited to 54 Mbps, and depending on your signal strength, may give you significantly slower connection speeds. Plus there are many variable that impact your wireless signal performance, these may include:

Connecting directly to your modem removes a lot of these variables.

Abbreviations / Terms used on the Speed Test Screen

Kbps Kb/sec – Kilobits per second

Mbps or Mb/sec – Megabits per second

Gbps or Gb/sec – Gigabit per second

ms – Millisecond

Latency – Is an expression of how much time it takes for a packet of data to get from one designated point to another. Expressed in milliseconds.

Jitter – The variation in the time between packets of data arriving, normally caused by network congestion, timing drift, or route changes. Expressed in milliseconds.