They will use virtually NO system resources until you start developing
something that, errr, uses a lot of resources... :-)
If you load up a million-row database and start writing monster select
queries in PHP against it, you'll probably strain any laptop.
If you just install them and develop some simple pages with modest
queries, I don't think you can BUY a new laptop that won't handle
If you're doing music, get a bigger hard drive. You'll need it.
Some people have a "gift" link here.
Know what I want?
I want you to buy a CD from some indie artist.
Yeah, I get a buck. So?