Theres a lot of talk about the performance difference between AMD and Nvidia but I think the reality is Nvidia are a very poor company to work with. Microsoft had big issues with Nvidia demanding high royalties even when the original xbox was near the end of its life. Microsoft had to abandon the xbox early and it probably led to the huge disaster of RROD as the 360 was released too soon. Since the original xbox we now have two generations of xbox console using AMD graphics. Originally paired with powerpc but now with AMD's own CPU.
Sony also had issues with nvidia and again has moved away from them.
Nintendo again has gone the AMD route again.
The fact is AMD are a far better company to work with.
Ouya is about the only console manufacturer willing to work with nvidia nowadays....
