Router question (about speed)

I know with wireless , n being the best , g, b . etc

But my question is - Are some routers faster when dealing the actual wired ports?

Ive been noticing that my router has been acting up, Ive been having to refresh pages once or twice to get them to fully load. I have a Netgear mr814 11mbs b . ( the computers in question are actually plugged in. (wired)

Would buying something like this .... increase my wired speed? Cuz right now it seems i get alot of "drops". Or like 20 second spans where my internet gets screwy.

thanks!

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