Does dual band wi-fi make a big difference?

[R.Youden]

I've seen all of the blurb on the Apple website about the 2.4Ghz and 5Ghz dual band WiFi. I guess my question is how much of a difference does it make?

I am looking at upgrading my network, both of my computers are dual band compatible but I have an older Airport Express which allows 2.4Ghz or 5Ghz but not both. One option is to get some of the mains ethernet adaptors but I like the sound of the new Airport Express.

I transfer a lot of large files from my laptop to a mac mini server.

Will I see a big increase in performance?

Thanks.

 

[Giuly]

The new AirPort Express is as fast, at least if you're so far away that it connects you to the 2.4GHz band. If you want something faster, you need a router with more spatial streams like the Linksys EA3500.