The NVIDIA RTX 4090 is the objective winner of this comparison, securing victory in eight out of fourteen categories. Its most significant advantage over the Intel Arc B570 is its FP32 performance, which is 617% higher. While the Intel Arc B570 holds its own in a few metrics, the sheer scale of the performance gap in raw computational power establishes the NVIDIA RTX 4090 as the superior hardware choice based on the provided specifications.

Users prioritizing maximum computational throughput should select the NVIDIA RTX 4090 to leverage its massive lead in FP32 performance. Conversely, the Intel Arc B570 is the logical choice for budget-conscious buyers, as it offers an MSRP that is 86% better than its competitor. Choosing between these two components depends entirely on whether your primary requirement is the highest possible processing capability or a significantly more accessible entry price.