I use the program Octave to make three dimensional graphs for teaching math, and I have found my computer doesn't handle it well. It seems to a lot of trouble when i try to change the angle i'm viewing from. A friend who knows a lot about MATLAB, which is a similar program, suggested its because of how old my processor is, so I was wondering if it would be a good solution to replace the processor.
I'm using a compaq nc6230 with I believe an Intel celeron processor and 1.5 GB RAM. The computer is 4 years old, but I really never have problems except when doing complicated things in Octave or Freemat, so I don't want to buy a new computer if I don't have to.