well i can tell ya....you'll need to spend around $2000 or $3000 for a pc that can run fsx on max settings. I havent seen any benchmarks online but most reviews of fsx say that it was released early so there isnt much hardware available to run it yet. if you look on nvidias site in nzone they give you the recommended settings for different gpu's. I have a 7600 gt and with the rec. settings for the 7800 i get around 20 fps and my card has a few problems so i could get maybe around 30 and then it basically looks like fs9