The best replacement for i3 4130 is fx 6300.

The best alternatives to i3 4130 are rated as following:
★★★★★  fx 6300
★★★★  i3 4330
★★★★  i5 4430
★★★★  i3 4340
★★★  i5 4440
★★★  i3 3220
★★★  i5 4570
★★★  i3 3240
★★  fx 8320
★★  g3220
★★  6300
★  fx 6350
★  a10 6800k
  intel i5 4570
  i7 920
  i5 3330

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Speaking about i3 4130, one probably shouldn't forget about gtx 660.

Other search terms related to i3 4130 and their ratings are:
★★★★★ gtx 660
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i3 4130
fx 6300
i3 4330