I have written here and here about performance tuning for Railworks 3 Trainsimulator 2012. Well, I decided now was a good moment to get improved hardware so I have upgraded. I now run the simulation on a Windows 7 computer with i5-2400 CPU, 4GB RAM and a Radeon HD 6950 with 1GB of RAM. I use basic settings at High, in game Master settings at Highest, and run in 1280×1024 full screen mode. It works perfectly. The load on the 4 cpu cores are typically 70/30/30/0 when I play, and the GPU is around 50% load.