The NVIDIA GeForce RTX 4090D is the objective winner of this comparison, securing victory in 12 out of 14 measured specifications. Its most significant technical advantage is its FP32 performance, which is 147% better than that of the NVIDIA RTX 3080. While the latter component maintains a lead in MSRP, the former provides a substantial leap in raw computational capability, establishing it as the superior option across the vast majority of the evaluated hardware metrics.

Users prioritizing maximum computational power should select the NVIDIA GeForce RTX 4090D to leverage its significant FP32 performance advantage. Conversely, the NVIDIA RTX 3080 remains the logical choice for buyers who prioritize a lower MSRP, as it offers a 56% better value in that specific category. Choosing between these two components depends entirely on whether the user requires the superior processing output of the newer model or the cost-focused advantage provided by the older hardware.