It’s right there in the new Apple TV specifications list:
Apple single-core A5 chip
Nothing else that Apple makes currently uses a single-core A5 chip. All other A5 chips, like the one found in iPhone 4S, are based upon the dual-core ARM Cortex-A9 MPCore CPU with NEON SIMD accelerator and a dual core PowerVR SGX543MP2 GPU.
MacDailyNews Take: How other companies think they can compete with Apple using off-the-shelf chips is unfathomable. They’re dreaming. Apple TV can achieve its remarkable performance at such low price because Apple has the resources and ability to roll custom silicon – for a “hobby,” no less! And this is just the beginning. Good luck trying to keep up with Cupertino in smartphones, tablets, and whatever else Apple dreams up, patent-infringing also-rans.
[Thanks to MacDailyNews Reader "Rex" for the heads up.]