See if you're able to drop the multiplier. I believe that you'll need to unlock it to go over the 13x multiplier. Most people opt to drop the multiplier very low and jack the FSB quite high, and this does do wonders for performance since the RAM and the CPU speeds are increased. Also, I believe that most nForce 2 boards automatically unlock most Athlon XP's...except for like the very newest ones (but that's been gotten around already).