The best replacement for 4570 is 4670.

The best alternatives to 4570 are rated as following:
★★★★★  4670
★★★★★  4670k
★★★★  4570s
★★★★  4770
★★★  8350
★★★  3570
★★★  3570k
★★★  8320
★★★  4440
★★  4430
★★  3470
★★  3030
★★  4570k
★  6300
★  444
★  3006
★  i5 4670
★  i7 4770
★  3350p
★  i5 4670k
★  2500k
  4570t
  6350

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Speaking about 4570, one probably shouldn't forget about gtx 760.

Other search terms related to 4570 and their ratings are:
★★★★★ gtx 760
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4570
4670
4670k