http://www.forbes.com/sites/patrick...sony-chose-amd-for-consoles/?partner=yahootix
My sources have confirmed for me that both Sony and Microsoft felt that MIPS didn’t have the right size developer ecosystem or the horsepower to power the new consoles. Then it came down to ARM versus X86 architecture. I am told there was a technical “bake-off”, where prototype silicon was tested against each other across a myriad of application-based and synthetic benchmarks. At the end of the bake-off, ARM was deemed as not having the right kind of horsepower and that its 64-bit architecture wasn’t ready soon enough. 64-bit was important as it maximized memory addressability, and the next gen console needed to run multiple apps, operating systems and hypervisors. ARM-based architectures will soon get as powerful as AMD’s Jaguar cores, but not when Sony or Microsoft needed them for their new consoles.