The NVIDIA RTX 4090 is a flagship 4K-class card with 24GB of VRAM, and Cities: Skylines II is a demanding, graphically heavy game. Paired with a balanced Intel Core i9-14900K-class CPU it averages about 83 FPS at 4K with FrameCoach's tuned settings — up from roughly 83 FPS with everything on High.
| Resolution | All-High FPS | Optimized FPS |
|---|---|---|
| 1080p | 205 | 205 |
| 1440p | 147 | 147 |
| 4K | 83 | 83 |
At 1080p expect around 205 FPS, at 1440p about 147 FPS, and at 4K roughly 83 FPS with optimized settings. Its 24GB of VRAM is plenty for Cities: Skylines II. Cities: Skylines II doesn't use upscaling, so the gains come from trimming the heaviest settings.
🎛 See the full best-settings guide for Cities: Skylines II on the NVIDIA RTX 4090 →
⚡ Check your exact CPU & target FPS in the optimizer →
Yes. With FrameCoach's optimized balanced settings, the NVIDIA RTX 4090 averages about 83 FPS at 4K in Cities: Skylines II.
Around 205 FPS at 1080p with optimized settings (up from about 205 FPS on all-High).
keep ray tracing off, and lower the heaviest settings a notch. FrameCoach's full per-setting guide for this exact combo shows what each option costs.
FPS figures are estimates from a generalized model (hardware tier × game load × per-setting weights), not live benchmarks — real performance varies by scene, drivers and game version.