Nvidia recommends using DLSS 4.5 primarily in performance and ultra performance modes due to its higher computational cost, while DLSS 4.0 remains preferable for quality and balanced modes where image quality is already excellent. The advancements in DLSS 4.5 focus on enhancing performance gains rather than quality improvements, with older GPUs benefiting less from the newer models, and users advised to choose presets based on their specific needs and hardware capabilities.
The discussion begins with an explanation of Nvidia’s recommendation to use DLSS 4.5 primarily in performance and ultra performance modes, while advising users to stick with DLSS 4.0 for quality or balance modes. The reasoning is not due to a drop in image quality but because DLSS 4.5’s new preset M has a higher performance cost. It performs anti-aliasing and reconstruction in a more advanced way, which increases runtime frame time, making it less efficient in quality or balanced modes. Therefore, Nvidia suggests using DLSS 4.5 mainly where performance gains are prioritized.
The panelists agree that DLSS 4.5 is unlikely to see improvements in quality mode because the technology focuses on balancing performance cost and output resolution rather than input resolution. As GPUs evolve, tensor cores become more capable, allowing for more complex models that improve image quality but also increase computational cost. Older GPUs may struggle more with these newer models as they consume a larger portion of frame time, which is a trend seen historically with other graphical enhancements.
Regarding whether RTX 5090 users should stick with DLSS 4.0 quality mode, the consensus is that while DLSS 4.0 quality mode already produces excellent results, it might be somewhat excessive for many games. Users have more tools and presets available now, and it ultimately comes down to personal preference and the specific game scenario. The improvements in DLSS 4.5 are more focused on enhancing performance modes rather than pushing the boundaries of quality mode, which is already highly polished.
The conversation also highlights how DLSS 4.0 has reached a point where image quality is remarkably high, making further improvements in quality mode subtle. Most advancements are now aimed at improving more aggressive modes like performance and ultra performance. This shift reflects a broader trend where Nvidia is addressing rendering inconsistencies and noise through technologies like frame generation and denoising, focusing on maximizing GPU capabilities to enhance visual fidelity.
Finally, the speakers share anecdotal experiences testing DLSS 4.5’s ultra performance mode on older GPUs like the RTX 2070. Despite running games at very low internal resolutions, DLSS manages to produce surprisingly good image quality, sometimes outperforming native resolution on consoles. This demonstrates the power of DLSS to extract detail from low-res inputs. The discussion ends with anticipation for the release of preset M, which is seen as the primary DLSS 4.5 model, offering a balanced approach between performance and image quality improvements for most users.