Detailed performance analysis of NVIDIA DLSS 4.5 across various resolutions and RTX series cards. Does the new Ray Reconstruction impact FPS?
4K Performance (RTX 5090 / 4090)
At 4K resolution (3840x2160), DLSS 4.5 Performance Mode delivers significantly higher frame rates compared to native rendering. The new AI model stabilizes small details, making "Performance" mode look closer to "Quality" mode than in previous versions.
| Game (Max Settings) | Native FPS | DLSS 4.5 (Quality) | DLSS 4.5 (Perf + FG) |
|---|---|---|---|
| Cyberpunk 2077 (Path Tracing) | 22 FPS | 48 FPS | 110 FPS |
| Alan Wake 2 | 34 FPS | 65 FPS | 125 FPS |
| Microsoft Flight Simulator 2024 | 45 FPS | 80 FPS | 140 FPS |
1440p Performance (RTX 4070 / 5070)
For mid-range cards, DLSS 4.5 ensures high refresh rate gaming 1440p monitors.
| Game | Native FPS | DLSS 4.5 (Quality + FG) |
|---|---|---|
| Black Myth: Wukong | 55 FPS | 115 FPS |
| Portal with RTX | 40 FPS | 105 FPS |
VRAM Usage Analysis
Does DLSS 4.5 use more VRAM? Slightly. Frame Generation requires a VRAM buffer to store the previous frame and motion vectors. However, because DLSS runs the game at a lower internal resolution (e.g., 1080p upscaled to 4K), the overall VRAM usage is often lower or similar to Native 4K rendering.
Latency Analysis
With the new Multi-Frame Generation+, latency penalties are reduced by approximately 15% compared to previous Frame Gen iterations.