The best replacement for h80i is h100i.

The best alternatives to h80i are rated as following:
★★★★★  h100i
★★★★  h90
★★★★  h60
★★★  hyper 212
★★★  hyper 212 evo
★★★  h75
★★★  h80
★★★  nh-d14
★★  212 evo
★★  h55
★★  kraken x40
★★  h100
★  h110
★  seidon 120xl
★  h60i
  nh-u14s

Your alternative for h80i is not listed? Suggest!
Speaking about h80i, one probably shouldn't forget about 600t.

Other search terms related to h80i and their ratings are:
★★★★★ 600t
You have in mind a companion for h80i and it is not yet here? Propose!



Google Trends

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h80i
h100i
h90