Benchmarks: CPU Performance
As was the case with Battlefield 3, as long as your processor has four cores/threads, it shouldn't have a problem in EA's latest shooter. The only processors to struggle were the dual-core AMD Phenom and Athlon CPUs, while the game can utilize up to eight threads if your chip has them on tap.
For example, the AMD FX-8350 had all eight of its threads allocated to BF4 with a total CPU utilization of around 60% in our benchmark. This is likely the reason why AMD's processors perform so well in this game, as the FX-8350 roughly matched the powerful Core i7 processors.
Despite increasing the clock speed 80% from 2.5GHz to 4.5GHz, the Core i7-4770K gained just 4% in frame rate performance, suggesting that Intel users have little to gain from overclocking.
AMD owners might have a little more success with overlocking, but boosting the FX-8350's frequency by the same amount mentioned above still only netted 8fps or a 9% performance increase.