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 is a superior noise level, which performs 24% better than the alternative. By excelling in the majority of measured categories, this cooler establishes itself as the more refined option for users prioritizing technical efficiency and acoustic performance in their cooling solution.

Users who prioritize a quieter computing environment should choose the Arctic Liquid Freezer III 420 to take advantage of its significant noise reduction. Conversely, the DeepCool LT720 360mm remains a viable option for those who do not require the specific performance gains offered by the larger unit. Selecting between these two components depends entirely on whether you value the acoustic benefits provided by the winning model or prefer the alternative configuration.