The AMD RX 6900 XT is the objective winner of this comparison, securing victory in eight of the thirteen measured categories. Its most significant technical advantage is its FP16 performance, which is 547% better than that of the alternative. While the AMD RX 590 manages to win in two categories, the sheer scale of the performance lead held by the 6900 XT in its primary area of strength establishes it as the superior component based on these specifications.

Users prioritizing raw computational power should choose the AMD RX 6900 XT to leverage its massive advantage in FP16 performance. Conversely, the AMD RX 590 is the logical choice for buyers focused on the initial cost, as it maintains a 72% advantage in MSRP. Selecting between these two components depends entirely on whether a user requires the high-end processing capabilities of the 6900 XT or the budget-friendly acquisition cost offered by the 590.