The Arctic Liquid Freezer III 420 is the objective winner of this comparison, securing victories in three out of four evaluated specifications. Its most significant advantage over the competition is its noise level, which is 24% better than that of the alternative. By outperforming the rival in the majority of measured categories, this cooler establishes itself as the superior option for users prioritizing technical efficiency and quieter operation during heavy system loads.

Users who prioritize acoustic comfort and maximum cooling potential should choose the Arctic Liquid Freezer III 420 for their builds. Conversely, the DeepCool LT720 360mm remains a viable alternative for those who do not require the specific performance advantages offered by the larger unit. Selecting between these two components depends entirely on whether the user values the superior noise profile and spec-leading performance of the Arctic model or prefers the alternative design.