Michael, I try to know as little as possible about PCs, Macs are my
game, but it's not hard to add Random Access Memory, and I find it an
inexpensive enough update to be, er, cost effective in most situations.
A CPU upgrade is a bit trickier, and I defer to PC experts whether it's
worth it. Recently, with $150 for a Sonnet upgrade, a friend got
another year or two on an ancient Mac.
Memory on a computer: There's 'thinking' memory or RAM, which is how
much the computer can think about at any one time. There's also storage
memory or hard drive space, a repository for your written and saved
files and for those that execute the commands that run the programs
that exist in thinking memory.
Kathy Jerseymac