The Thermalright Peerless Assassin 120 SE is the objective winner of this comparison, securing more individual specification victories than the Thermalright Peerless Assassin 120. The most impactful advantage offered by the Thermalright Peerless Assassin 120 SE is its superior TDP rating, which provides a 9% performance improvement over the alternative. This technical edge makes the SE variant the more capable option for managing thermal output based on the provided specifications.

Users prioritizing maximum thermal management should select the Thermalright Peerless Assassin 120 SE to take advantage of its higher TDP rating. Conversely, those who do not require this specific thermal capacity may consider the Thermalright Peerless Assassin 120, as it remains a viable alternative that ties the SE model in the remaining measured categories. Your choice should depend on whether you require the specific 9% improvement in TDP capacity provided by the winning model.