Lol guys don't worry, its the good old doom 3 engine. So you can enjoy gorgeous graphics with your current cards as well. A memory upgrade might be in the pipeline though seeing the scale of the game.
I never doubted the abilities of the Doom 3 engine. But it seems to me that in Quake Wars, Vertex Shader horsepower in the graphics card is equally important as the Pixel Shader horsepower, considering the number of players animated and the immense amount of geometry.