right now definitely more intense on GPU, its only singlethreaded game so you could have best CPU in the world and it still wont run 100%. My advice wait until 2.0 before upgraded as this game is poorly optimized to run on anything well. In 2.0 you should be able to play the game fine. As of right now the way its set up this game never utilizes more than 8 GB's of RAM, and I have yet to test out how much GPU power it uses but it never uses more than 10% of my GPU's power cause of a huge bottleneck.