Welcome back to computers. Lol, it will definitely be an upgrade to your commodore 64. Not everyone hates amd. There's been an ongoing fan base battle debating amd/intel just like chevy/ford. In the past couple of years they've ran into development problems and have been working in other markets (mobile processing) and have fallen behind intel's high end systems. Then again many of us can't afford intel's high end anyway (not to mention it's overkill for most general use). Only heavy every day users are likely to notice a real difference in performance between intel and amd, people who do intensive video/photo/sound editing, graphic design, 3d or cad (engineering design) work. For gaming, web surfing, chatting, watching online videos etc amd is just fine.
You're probably not concerned with the technical details of it, but I'm on an older intel system and corcorand82's on a newer amd system and no doubt their pc is faster than mine. Chances are we're both running windows and if you didn't know who's machine was who's (what's under the hood) you wouldn't tell a difference from the desktop or sending emails and stuff.