well the hardest thing is finding any info on what is in each laptop.
If i see a used core i3 laptop (then i only need to buy chip not memory or hard drive)
I do not know if its possible to upgrade to i7
and i do not know how to find that info.
with a barebones notebook it would include everything except for the hard drive chip and memory?
would all of these chipsets be ddr3 or would some be ddr2?
also I have seen more then one notebook that said only for i3 / i5
why is that and how can i tell if that is the case for a notebook i might be looking at?