The best replacement for noctua nh-d14 is hyper 212.

The best alternatives to noctua nh-d14 are rated as following:
★★★★★  hyper 212
★★★★★  h100
★★★★★  h100i
★★★★  water cooling
★★★★  212 evo
★★★  nh-c14
★★★  corsair h100
★  kraken x40
★  h70
★  hyper 212 evo
★  thermalright silver arrow
★  silver arrow
  noctua nh-c14
  deepcool assassin

Your alternative for noctua nh-d14 is not listed? Suggest!
Speaking about noctua nh-d14, one probably shouldn't forget about corsair vengeance.

Other search terms related to noctua nh-d14 and their ratings are:
★★★★★ corsair vengeance
You have in mind a companion for noctua nh-d14 and it is not yet here? Propose!



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noctua nh-d14
hyper 212
h100