Tested via speedtest.net
I've set my wireless router to be b/g/n mode (there's no n-only mode on my router).
And I am using a USB stick (N, not G) on on PC and an internal wireless on another laptop running XP Pro.
closed as off topic by ceejayoz, mdpc, Sirex, Greg Askew, Michael Hampton♦ Oct 29 '12 at 20:13
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There are several factors that can cause a speed difference between wireless and wired. Several common factors include environmental factors such as electrical interference, other wireless clients communicating with the same wireless device, and distance from the router. It is important to understand that the wireless media(air) is a shared resource and can have collisions requiring retransmission of data. This retransmission will cause the network to slow as the same data must be sent again.