Newer router help with wired connections?

I have an older G router that has been working like a champ for quite some time.

If I purchase a newer router with a higher all-around throughput such as the ASUS n56u, will my wired connections see an improvement?

Basically, I would like to know if a router with higher throughput will improve my Xbox Live experience if my Xbox is hardwired to the router?

Thanks in advance!