What does amazon aws mean by "network performance"?

When choosing an amazon aws instance type to launch, there is a property of each type which is "Network Performance" which is either "Low", "Moderate", or "High". I'm wondering what this exactly means. Will my ping be lower if I choose low? Or will it be ok as long as many users aren't logged in at once?

I'm launching a real time multiplayer game and I am so I am curious as to exactly what is meant under "network performance". I actually need fairly low memory and processing power, but instances with those criteria usually have "low" network performance.

Has anyone experience with the different network performances or have more information?

Thanks!

Solution 1:

It's not oficial, but Serhiy Topchiy did a benchmark with different instance types:

http://epamcloud.blogspot.com.br/2013/03/testing-amazon-ec2-network-speed.html

For US-EAST-1, it seems that LOW corresponds to 50Mb/s, Moderate corresponds to 300Mb/s and High corresponds to 1Gb/s.