I'm going to go out on a limb and guess you are buying the ever-so-popular XP-M 2500+ to OC to 3200+? Yes, it will be a great improvement to the 1900+ in general, however I don't know exactly what kind of increase you are looking for. It's not going to "bring you up to date" so to speak. Will it help with games? Sure. Like a new computer? No. Will it help with video encoding? Sure. A lot? No. You will still be moving pretty slow compared to present computers, but it will be noticeably faster than what you have!