The NVIDIA RTX 3090 is the objective winner of this comparison, securing victory in eight out of twelve measured specifications. Its most significant advantage over the AMD Radeon RX 550 is its FP32 performance, which is 2838% higher. While the AMD Radeon RX 550 holds a lead in three categories, the sheer scale of the performance gap in computational power establishes the NVIDIA RTX 3090 as the superior component based on the provided technical data.

Users prioritizing raw computational power should select the NVIDIA RTX 3090 to leverage its massive advantage in FP32 performance. Conversely, those focused on the initial cost of the hardware should choose the AMD Radeon RX 550, which offers a 95% better MSRP. The decision between these two components rests entirely on whether the user requires the high-end processing capabilities of the former or the cost-efficient entry point provided by the latter.