Brett, to fully enjoy NGX I think You will need the "standard" FSX system of todays which is: 4GHz CPU, Fast GPU and 4+ GB of RAM. That's what we need for current products and PMDG is working hard with NGX to optimize it for best FPS. Of course it's also very important how far to the right You want to have the sliders in FSX options.

Remember they have lives. They have families etc and that takes priority.