The best replacement for kaveri is haswell.

The best alternatives to kaveri are rated as following:
★★★★★  haswell
★★★★  fx
★★★★  richland
★★★★  vishera
★★★  iris pro
★★  trinity
★★  kabini
  piledriver

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Speaking about kaveri, one probably shouldn't forget about r7 250.

Other search terms related to kaveri and their ratings are:
★★★★★ r7 250
★★★ r7 260x
crossfire
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Google Trends

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kaveri
haswell
fx