The NVIDIA RTX 4090 is the objective winner of this comparison, securing victory in ten out of thirteen measured categories. Its most significant technical advantage is its FP32 performance, which is 1238% better than that of the AMD RX 580. While the latter component holds a lead in three specific areas, the former demonstrates a clear dominance across the majority of the evaluated hardware specifications.

Users prioritizing raw computational power should select the NVIDIA RTX 4090 to leverage its substantial lead in FP32 performance. Conversely, those focused on initial acquisition costs should choose the AMD RX 580, as it offers an 88% advantage in MSRP. The decision between these two components rests on whether the buyer values the superior processing capabilities of the newer hardware or the significant cost efficiency provided by the older model.