Early last year I bought a new system , and as a consequence from having a quadcore then and using a x64 Windows, Fallout 3 did not run on it. I had freezes after some minutes, and graphical artifacts.
I then googled and stumbled over the ini-fix to prevent the game from using more than two cores, which healed the issues immediately. I was happy - and forgot it all on the same day.
Yesterday I digged it out again, installed it, pushed all sliders and everything to max, plus higher resolution (1680) - and was stunned by how differently and how superb the game looks despite its age! On my old rig I had to use lower resolution and sliders on medium, and advanced visual effects deactivated. But now - wowh, simply wowh.
Had no real idea what a good-looking game this is - still.
It's nice to have had a long, very long pause from it. It all feels new, and details are no longer remembered, but get newly discovered.