You've got a point here.
I think if I could upgrade my mobo, cpu, and memory, I could use my current GeForce 9800 GTX+ 512MB and get better performance.
My "Windows Experience Index" is only 3.7, and the lowest component is the CPU. If I replaced the mobo, cpu & RAM, I would get 5.9. If I could do all that for around $200, I think I would go for it. And, if I'm not upgrading video, I might be able to get away with keeping the 550W PSU.
It seems that most Trainzers are running dual core, and much faster RAM than I have. That seems to be where my bottleneck is.
FW