I have a 2 year old stock sony laptop with a crappy ATI card. I havent spent any time optimizing my setup. I loaded the game and it was unplayable so i turned off the shadows and the turned the grass to low, now the game never dips below 30fps. My only complaint is slow loading screens between planets, WZs, and zoning into the main level on fleet.
I did play the beta and have seen definite performance improvements since then.