The best replacement for 4770k is 3770k.

The best alternatives to 4770k are rated as following:
★★★★★  3770k
★★★★★  4670k
★★★★★  4820k
★★★  4930k
★★★  2600k
★★★  3930k
★★  4771
★★  4770
★★  8350
★★  4670k gaming
★★  9590
★  4960x
★  3570k
★  2500k
★  i7 3770k
★  2700k
★  3820
  4820
  4770s
  920
  4570k
  i5 4670k

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Speaking about 4770k, one probably shouldn't forget about gtx 770.

Other search terms related to 4770k and their ratings are:
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3770k
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