The Intel Arc B580 is the objective winner of this comparison, securing victory in eight out of fourteen evaluated specifications. Its most significant advantage over the NVIDIA RTX 3080 is a 100% higher memory clock speed. This substantial lead in memory frequency positions the Intel Arc B580 as the superior choice for users prioritizing the specific technical advantages provided by its architecture over the competing hardware.

Users who prioritize memory clock speed should select the Intel Arc B580 for their system. Conversely, those who require a higher count of shader units should choose the NVIDIA RTX 3080, as it offers a 240% advantage in that specific category. Your final decision should depend on whether your workload benefits more from the superior memory clock of the Intel card or the significantly higher shader unit density found in the NVIDIA alternative.