Compared to the cheapest build you can build today, that is very old. A 8800GTS wasn't that great when it came out, either (you were looking at 1GB cards back then too). Maybe in early 2007 it was towards the high end, but things have progressed much much much further than that since.

By the time the game comes out, the current high spec computer will be much cheaper. You'll be looking at things like 16-24GB DDR3 RAM, nVidia 480GTX 2GB, i7 Core 4.0GHz to be middle-high range, most likely.