The best replacement for nh-d14 is h100i.

The best alternatives to nh-d14 are rated as following:
★★★★★  h100i
★★★★  h80i
★★★★  ph-tc14pe
★★★  water cooling
★★★  nh-d14 se2011
★★★  h100
★★★  h110
★★★  nh-c14
★★  h220
★★  nh-u14s
★★  nh-u12s
★★  hyper 212 evo
★★  evo 212
★  hyper 212
★  thermalright silver arrow
★  h70
★  phanteks
★  noctua nh-c14
★  h80
  tpc 812
  silver arrow
  corsair h100

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

Other search terms related to nh-d14 and their ratings are:
★★★★★ corsair vengeance
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