Sorry I can't overclock my X2.
It's a HP computer. They use MSI motherboards, but specially designed for them with things locked.
There's software that can do it probably, but it requires me to look on the motherboard with a flash light. You have the select the right option in the software. Too much work.
I could go up as high as XP 4500+ I believe, but heck for $439 I can get a full quad core machine these days. Would just need to upgrade video card, and that price doesn't include OS.