I've been thinking about building a low-power machine for my mom, possibly inside the chassis and using the power supply of the 2004 Dell I handed down to her. Does anyone have thoughts on whether there would be any compatibility issues between an older power supply and a newer board? I don't think any of those connection standards have changed, but I was never that familiar with them to begin with. On the one hand I could just add a new PSU to the budget, but the current one has been such a workhorse for 8 frigging years that I'm tempted to let it ride.

I'm looking at a build with one of AMD's combined CPU + GPU processors on a micro ATX board with all modern interface standards and a smaller SSD. As long as it's not starved for RAM, it should be more than enough machine for her Facebook games, browsing, and occasional streaming.