The NVIDIA RTX 4090 is the objective winner of this comparison, securing victory in ten out of fourteen measured categories. Its most significant advantage over the Intel Arc A750 is its FP32 performance, which is 380% better. While the Intel Arc A750 holds its own in a few specific metrics, the NVIDIA RTX 4090 dominates the majority of the technical specifications provided, establishing itself as the superior component in this head-to-head evaluation.

Users prioritizing raw computational power should select the NVIDIA RTX 4090 to leverage its massive lead in FP32 performance. Conversely, those focused on initial acquisition costs should choose the Intel Arc A750, which offers an 84% better MSRP. The decision rests on whether the buyer requires the high-end performance capabilities of the NVIDIA RTX 4090 or the budget-friendly pricing advantage provided by the Intel Arc A750.