The Lian Li Lancool III is the objective winner of this comparison, securing a lead in six out of eight evaluated specifications. Its most significant advantage is the inclusion of fans, which provides a 100% improvement over the alternative. By offering a more complete cooling solution out of the box, this case establishes itself as the superior choice for users prioritizing integrated hardware support and overall value based on the provided technical metrics.

Users who prioritize out-of-the-box cooling performance should select the Lian Li Lancool III for its substantial fan advantage. Conversely, the Lian Li O11 Vision is the appropriate choice for builders who require the maximum possible GPU length, as it offers a 4% improvement in that specific category. Choosing between these two options depends entirely on whether your build requires the superior fan configuration of the former or the slight GPU clearance edge of the latter.