So I'm planning to purchase a refurbished MacBook once I have enough money, I'm just trying to tie up some loose strings. I already searched the forums but couldn't find the answer I was looking for, so here I go: I noticed checking the refurbished section on Apple today that there were two types of MB's they were selling: Core Duo and Core 2 Duo. Of course the CD is cheaper so my question is what is the difference between the CD vs C2D? In regards to 1.83Ghz vs 2.0Ghz, is there really a big difference between those as well? How bout specifically a CD 1.83Ghz to a CD 1.83Ghz? And also C2D 2.0Ghz to a C2D 2.0GHz? Sorry if I'm asking all these questions, I just want to make sure my future purchase will be the right one for me. Right now I'm currently looking at the Refurbished MacBook 2.0GHz C2D 1GB 80GB for $1,099. I was also thinking maybe just pulling the trigger and getting a iBook G4 but I'm not sure. Thanks for reading my newbish post, sorry if a lot of this was already asked.. I just couldn't find it. Take care!