Kinda tooting my own airhorn here (woot woot

)
AMD Athlon X2 6400+ (3.2ghz, 2x1MB L2 cache)
DFI Lanparty DK 790FX-M2RS AM2+t
Crucial 4GB DDR2 PC-1066 (4x 1GB)
ATI HD4870 512MB GDDR5
Creative XF-I Champion Edition
Western Digital 500GB SATA II (2x RAID 1)
Antec 850W PSU
Windows Vista Business 64-bit
Quite honestly I built a monster (monster weight 55lbs!)
The video card itself is a monster, every game I've used with it shows no sign of stopping it. I bought it when it first came out so it was a tad bit more than it is now, but by far it was the best $300 I've ever spent.
Every setting in Trainz set to max, 24x AA 16xAF (I think 16 I haven't checked since I built the comp) and Trainz at the lowest still hits 30FPS where my old computer hit 7FPS. I could easily get higher, but there aren't many who can boast 24x Anti-Aliasing
I'll be trying TS2009 in the coming days, but I expect very good performance from this rig as well.