The Phanteks NV5 is the objective winner of this comparison, securing six out of eight total specification categories. Its most significant advantage over the Hyte Y40 is its cooling configuration, as the Phanteks NV5 includes 100% more fans than its competitor. While the Hyte Y40 offers a distinct advantage in storage capacity, the superior fan inclusion makes the Phanteks NV5 the more comprehensive hardware package based on the provided specifications.

Users who prioritize out-of-the-box cooling performance should choose the Phanteks NV5 for its increased fan count. Conversely, those who require additional storage space for their build should select the Hyte Y40, which provides 100% more 3.5" drive bays than the alternative. Your final decision should depend on whether your specific system requirements lean toward integrated thermal management or expanded internal drive support.