NVIDIA's Optimus switchable graphics are old hat, but AMD is relatively new to the game of packing dual GPUs in a single laptop. AnandTech decided to pit the two solutions against each other and, well, lets just say AMD doesn't come out looking so great. The biggest problem appears to be stability. While performance is acceptable (though, not quite as good as it should be) the site had trouble getting four of the supposedly 16 supported games to switch between the integrated and discrete GPUs as advertised. Regular driver updates, not to mention a bit more testing, could solve the issues, but for now NVIDIA's Optimus simply outclasses its AMD counterpart. Check out the video after the break and don't forget to hit up the source link for all the details.