AMD unveils new Jaguar CPU. Supposedly PS4/720 will have 2 of these fused together in a custom setup.
Highest end part has a TDP of 25W. That's the Quad-Core version. 2 of those for 8 Cores gives us 50W TDP.
Here is 1 Quad.
There are some modern CPU instructions like AVX.
Jaguar feature out-of-order execution, but also ISA instruction sets found on mainstream CPUs, such as AVX (advanced vector extensions), SIMD instruction sets such as SSSE3, SSE4.1, SSE4.2, and SSE4A, all of which are quite widely adopted by modern media applications.