If you buy i7 4790k , you won't need to overclock . It has turbo boost feature that boost its stock speed to 4.4GHz
i7 6770k is a bit faster but its max turbo is only 4.2GHz
See Dolphin Benchmark here :
http://www.anandtech.com/bench/CPU/1027
Dolphin is a dual core app . AMD CPU is great for encoding task because you can fully use 8 cores but each core is weak . That's why Dolphin and some single threaded programs don't run well on AMD CPUs
Base on Dolphin benchmark , you will have to overclock your FX 8320 to 4.5GHz to keep up with an i3 4130 @ 3.4GHz or Pentium Haswell @ 3.4GHz
i7 6770k is a bit faster but its max turbo is only 4.2GHz
See Dolphin Benchmark here :
http://www.anandtech.com/bench/CPU/1027
Dolphin is a dual core app . AMD CPU is great for encoding task because you can fully use 8 cores but each core is weak . That's why Dolphin and some single threaded programs don't run well on AMD CPUs
Base on Dolphin benchmark , you will have to overclock your FX 8320 to 4.5GHz to keep up with an i3 4130 @ 3.4GHz or Pentium Haswell @ 3.4GHz
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