I recently purchased an alienware alpha r2, and didn't see that you could change the graphics card. Is there a big difference between a AMD Radeon™ R9 M470X GPU with 2 GB GDDR5 & a NVIDIA® GeForce® GTX960 GPU 4GB GDDR5
Will the AMD Radeon be able to run Witcher 3 without any problems, or am I up a creek without a paddle?