The NVIDIA RTX 2070 SUPER is the objective winner of this comparison, securing more total spec victories across the evaluated fields. Its most significant technical advantage is a memory bus that is 300% better than that of the competition. While the AMD RX 6400 holds its own in several categories, the superior memory architecture of the NVIDIA card provides a substantial lead in overall hardware capability, establishing it as the more robust component in this head-to-head analysis.

Users prioritizing power efficiency should select the AMD RX 6400, as it offers a 75% better TDP compared to the alternative. This makes it the logical choice for builds where low power consumption is the primary requirement. Conversely, those who require the high-bandwidth performance provided by the significantly wider memory bus should choose the NVIDIA RTX 2070 SUPER. This component is better suited for users whose tasks demand the hardware advantages inherent in its superior memory configuration.