I'm not an AMD guy, so maybe one can contribute something here, though I highly doubt Trainz would take advantage of any extra capabilities of any specific brand of card. Trainz doesn't even support SLi or Crossfire.
That said, I'd have to know what kind of video card is in there now as well as what size power supply you have in Watts, but as soon as I saw 512mb in your earlier post, I had a feeling you probably had an under-powered graphics card (there are some exceptions, but not many.)
That said, I'd have to know what kind of video card is in there now as well as what size power supply you have in Watts, but as soon as I saw 512mb in your earlier post, I had a feeling you probably had an under-powered graphics card (there are some exceptions, but not many.)