The NVIDIA RTX 4080 is the objective winner, securing nine out of fifteen comparable specifications. While the NVIDIA RTX 3090 Ti maintains a significant lead in memory capacity, offering 50% more VRAM, the RTX 4080 provides the most impactful technical advantage with its AV1 encoding capability, which is 100% better than the alternative. This superior encoding efficiency positions the newer card as the more advanced option across the majority of measured hardware metrics.

Users who prioritize high-capacity memory for specialized workloads should choose the NVIDIA RTX 3090 Ti to leverage its 50% VRAM advantage. Conversely, those who require modern video processing capabilities should select the NVIDIA RTX 4080 to utilize its 100% improvement in AV1 encoding. By focusing on these specific hardware strengths, buyers can align their choice with either the larger memory pool of the former or the advanced encoding architecture of the latter.