One of the questions I get pretty often from people is, “what kind of computer should I get to start producing music?” My answer is, what kind of computer do you have? Use that. Or, look for one in the trash, or basically any computer you have lying around can be used to produce music.
I have several computers, but one computer I still have is a 2004 Apple iBook G4. I still use this computer often, and it is quite capable for making music. People seem to forget that making music on computers has actually been around for quite some time. Back in 2003 I was using a Pentium III windows XP computer running Cubase SE and had no issues producing music on this system. It was quite common to use PCs with only 512mb ram, or even 256mb!
For my iBook, I’m running Lubuntu on it at the moment. This allows me to run a recent version of Ardour, Seq24, Ecasound, and others. It’s a lot of fun to use and this computer was extremely well built.
So basically what I am trying to say is there’s no reason to go out and buy a new computer (if you already have one). Use what you have! The most important thing is to educate yourself on the art of electronic production!