no, we went over this in MITA the other day, it says it goes up that high, but really it was set at your TV's resolution. I hope you dont do graphics or anything, because using your TV severly degrades your graphics. What we see of your desktop and what you see are two different things.
also, you might want to find your TV's highest resolution, and change your video card to that resolution. if your going at a higher res, your video card is trying to paint a better picture than what your TV can take. Kind of like trying to watch an HDTV channel on a regular non-HD TV