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Is a 300 Mbps plan fast enough for a 100 GB game download?

By TechCompare · Updated · How we check

44 minutes 26 seconds is the best case for 100 GB on a 300 Mbps plan. Set your own deadline, then compare the speed it needs with what your plan delivers, which is 37.5 MB/s at full speed.

A 100 GB game on a 300 Mbps plan works out to 44 minutes 26 seconds in the calculator. That's a best case, which assumes the full 300 Mbps for the whole download with no pauses. This page asks a different question: how much speed would you need to finish on a set schedule, and does your plan reach it?

Transfer time
44m 26s
At peak link speed
File size
100 GB
100 GB
Link speed
300 Mbps
300 Mbps internet plan
This exact 100 GB copy over 300 Mbps internet plan, pre-loaded. Change the file size, link, or model a longer round trip.
Edit in the full tool

How this is calculated

Work backward from the deadline. Moving 100 GB in one hour needs 222.2 Mbps of steady speed. Give yourself only 30 minutes and the need rises to 444.4 Mbps, because the file has to move in half the time.

A 300 Mbps plan clears the one-hour deadline, with some margin to spare. It falls short of the 30-minute deadline on paper, so the plan would need to be faster.

Read the plan number as a ceiling. The calculator uses the full plan speed, so 300 Mbps is the top of what the download can reach, not a floor. If your deadline needs something close to that top, a small slowdown will miss it.

At this speed the plan stops being the slow part. A 300 Mbps plan is 37.5 MB/s on paper, and that's the range where a disk or Wi-Fi link can start to limit a download. A hard drive can fall below a fast plan's speed, and Wi-Fi often delivers less than the plan.

Verdict

Compare the speed your deadline needs with your plan, and leave room for slowdowns. A 300 Mbps plan covers a one-hour deadline on paper. It can't hold a 30-minute deadline. Check your plan for a data cap too, since the full 100 GB counts toward it.

More Internet scenarios

100 GB over USB 3.0
A 100 GB transfer over USB 3.0 works out to 2 minutes 40 seconds at the interface's 5 Gbps peak rate.
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1 TB over USB 3.0
A 1 TB transfer over USB 3.0 works out to 26 minutes 40 seconds at the interface's 5 Gbps peak data rate.
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4 GB over USB 2.0
A 4 GB transfer over USB 2.0 works out to 1 minute 6 seconds at the interface's 480 Mbps peak rate.
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Related guides

100 GB game on a 100 Mbps plan
The same 100 GB on the slowest plan in this set, with the MB/s math spelled out.
View guide
150 GB game on a 500 Mbps plan
A bigger 150 GB game on a 500 Mbps plan, with the data allowance and pause points.
View guide
Why is my transfer slower than my connection?
One cause of a slow distant download: the TCP window on a long-distance link.
View guide
100 GB over WiFi 6
The Wi-Fi 6 peak link rate for 100 GB, and why one device sees less.
View guide

Frequently asked questions

What plan speed do I need for a 100 GB game in one hour?
About 222.2 Mbps of steady speed, before any slowdown. Any drop below that rate pushes the download past the hour, so a plan with some margin above the figure gives you room.
Is the calculator time a best case at full plan speed?
Yes. The calculator converts 100 GB into bits and divides by 300 Mbps, which gives 2,666 seconds. That figure assumes the full plan speed from start to finish, with no pauses. Real speed from a game server, a Wi-Fi link or a disk can come in lower, and that makes the download take longer.
Why does a 300 Mbps plan show such a small number in my download window?
Mbps counts megabits, and a download window often counts megabytes. Eight bits make one byte, so the MB/s figure is the plan speed divided by eight. A 300 Mbps plan works out to 37.5 MB/s at full speed, which is the number a correct download shows.
Is my Wi-Fi or my disk more likely to hold back a 300 Mbps download?
Either can. Wi-Fi often delivers less than the plan, and the speed drops with distance and walls. A cable from the computer to the router takes Wi-Fi out of the equation. A disk that writes slower than the download speed becomes the limit, and a hard drive can fall below a fast plan's speed. The modeled link rates are on the Wi-Fi 6 and Wi-Fi 7 pages.

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