Yeah, that's what I was thinking, I usually use speedtest.net or speakeasy to test, I just upped my internet speed from my ISP and just want to do some testing... It just seems those speedtest sites aren't the most accurate, but I guess as long as it's consistent, I can get an idea if the router is slowing my speed or not...
My router is probably over 2 years old, I'm not sure what the lifespan is supposed to be on them, I usually change them out yearly but I've liked this 4500 so much I haven't changed it...