Hello. I am in a bind. Currently I have a G3 450 B&W running Windows 2000 Professional for my college studies. Windows runs like syrup. I was thinking of changing out the zif and wondered this? Which would be better the G4 550, would there be any benefit to Altivec? How about a G3 800 for raw data processing at a higher speed. Anyone have an opinion or some facts to help me decide? Lee