That's a very capable machine. It doesn't really matter if it's slow by today's standards. It's fine, particularly if it's not running Windows. I recently bought a couple of machines that were older and less capable than that, but were plenty good enough for what I wanted them for.

Just because a machine isn't up to the latest specs doesn't mean it's not good, or that there isn't a market for it.

Put linux mint on it. You’ll be amazed how well it runs.