The Intel Arc A750 is the objective winner of this comparison, securing victory in ten out of fourteen measured specifications. Its most significant advantage is its FP32 performance, which is 383% better than that of the AMD RX 6400. While the latter component maintains a lead in power efficiency, the substantial gap in raw computational capability makes the Intel offering the superior choice for users prioritizing high-end processing power over lower power consumption.

Choose the Intel Arc A750 if your primary goal is maximizing FP32 performance for demanding tasks. Conversely, the AMD RX 6400 is the better option for users who prioritize energy efficiency, as it offers a 76% advantage in TDP. Selecting between these two components depends entirely on whether your specific system requirements favor the significant computational lead of the Intel card or the power-sipping profile of the AMD alternative.