Fortnite serves as a showcase for Unreal Engine 5. In 'Performance Mode', it runs on almost anything. However, enabling 'Lumen' (global illumination) and 'Nanite' (virtualized geometry) requires a powerful RTX 30/40 series GPU to maintain 60 FPS. The building mechanics also add a significant CPU load, especially in competitive end-games with dense player structures.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 113 FPS. At 1440p, all settings exceed 82 FPS. At 4K, frame rates range from 56 to 119 FPS.
The GeForce RTX 4090 is 136% above the recommended GPU (GeForce GTX 1080) for Fortnite. The Core i5-12400F is 49% above the recommended CPU (Core i5-7300U).
The Core i5-12400F determines the performance ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GPU has headroom.
Approximated average price on current market:
Combo price: $1759. At 1080p Ultra, this combo delivers 113 FPS, equivalent to 0.06 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.217 fps/$ | 0.153 fps/$ | 0.097 fps/$ | 0.064 fps/$ |
| 1440p | 0.109 fps/$ | 0.081 fps/$ | 0.061 fps/$ | 0.047 fps/$ |
| 4k | 0.068 fps/$ | 0.052 fps/$ | 0.044 fps/$ | 0.032 fps/$ |
* Table values represent FPS per Dollar (higher is better)
At 1440p low, the Core i5-12400F sets the ceiling at about 190 FPS, while the GeForce RTX 4090 could reach 316 FPS. In this scenario, the CPU limits the GPU potential by 40% (FPS gap: 126 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Core i5-12400F is the limiting side in the heaviest mismatch. This means part of the GeForce RTX 4090 rendering potential remains unused in those settings.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU Limits GPU 30% | CPU Limits GPU 26% | CPU Limits GPU 18% | CPU Limits GPU 39% |
| 1440p (2K QHD) | CPU Limits GPU 40% | CPU Limits GPU 31% | CPU Limits GPU 33% | CPU Limits GPU 37% |
| 4K (Ultra HD) | CPU Limits GPU 31% | CPU Limits GPU 19% | CPU Limits GPU 27% | CPU Limits GPU 25% |
We estimate the maximum FPS the processor can sustain and the maximum FPS the graphics card can sustain in each setting, then compare those limits directly.
Limit Factor formula: (stronger - weaker) / stronger. Example: if CPU ceiling is 200 FPS and GPU ceiling is 140 FPS, then GPU limits CPU by 30%.
CPU Limits GPU means the processor ceiling is lower. GPU Limits CPU means the graphics ceiling is lower. Balanced means the FPS ceilings are close enough that the gap is negligible.
The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU63% - 88% <> GPU32% - 55% <> | CPU53% - 77% <> GPU64% - 76% <> | CPU32% - 54% <> GPU64% - 96% <> | CPU28% - 53% <> GPU64% - 95% <> |
| 1440p (2K QHD) | CPU59% - 82% <> GPU40% - 65% <> | CPU47% - 74% <> GPU77% - 95% <> | CPU30% - 59% <> GPU95% - 99% <> | CPU26% - 58% <> GPU93% - 99% <> |
| 4K (Ultra HD) | CPU60% - 83% <> GPU43% - 65% <> | CPU49% - 74% <> GPU78% - 99% <> | CPU34% - 56% <> GPU100% - 100% | CPU30% - 56% <> GPU99% - 100% <> |
The Core i5-12400F + GeForce RTX 4090 pairing runs this title with CPU utilization between 26% and 88% and GPU utilization between 32% and 100%. Core i5-12400F stays in a controlled operating range, while GeForce RTX 4090 becomes the primary limiter at high visual load. As resolution scales, average GPU load rises from 69% at 1080p to 86% at 4K, while CPU averages move from 56% to 56%.
This profile is GPU-bound. At 4K (Ultra HD) High, the GeForce RTX 4090 averages 100% usage (100-100%), while the Core i5-12400F stays at 45% (34-56%), indicating the graphics pipeline is the limiting stage.
At 1080p, averages sit around CPU 56% and GPU 69%. At 1440p, that shifts to CPU 54% and GPU 83%, and at 4K it reaches CPU 56% and GPU 86%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
4K (Ultra HD) Medium is the most balanced preset based on this dataset. It runs around CPU 62% (49-74%) and GPU 88% (78-99%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Core i5-12400F remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Core i5-12400F and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization & Bottlenecks: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. This is the key to identifying performance bottlenecks in any system.
Data generated by our Machine Learning engine trained on real-world benchmarks. Shows the approximate average utilization at each setting.
See how your processor and graphics card compare against the game official minimum and recommended system specs. The placement of your hardware is calculated using relative synthetic performance scores to help you gauge overall playability.
Your CPU is 49% above and your GPU is 136% above the recommended specs. High/Ultra at 1080p. Lower settings for higher resolutions.
+49%vsrecommended
+136%vsrecommended
+205%vsminimum
+521%vsminimum
Yes, the Core i5-12400F paired with the GeForce RTX 4090 can run Fortnite smoothly up to 1440p achieving around 82 FPS at Ultra quality. Your GPU is 136% above the recommended specs, and your CPU is 49% above the recommended requirements.
This CPU + GPU combo costs approximately $1759 ($110 CPU (Rank #30 Value) + $1649 GPU (Rank #77 Value)). Your build is already very cost-efficient, but if you want even more FPS, the next good option is upgrading the CPU. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).
For Fortnite, upgrading the CPU would have the biggest impact on performance. The Core i5-12400F is currently the limiting factor — the GeForce RTX 4090 has extra headroom that a faster processor could take advantage of. This is especially noticeable at 1080p where CPU performance matters more. CPU-limited at: 1080p low, 1080p medium, 1080p high, 1080p ultra, 1440p low, 1440p medium, 1440p high, 1440p ultra, 4k low, 4k medium, 4k high, 4k ultra.
Fortnite does not currently support Frame Generation technologies like DLSS 3 or FSR 3. Your performance is based entirely on native rendering. If the game adds support in a future update, newer GPUs will benefit the most.
Fortnite requires at minimum a Core i3-3225 (CPU) and GeForce GTX 960 (GPU) with 8 GB RAM and 30 GB storage. For the recommended experience, you need a Core i5-7300U and GeForce GTX 1080 with 16 GB RAM. Your Core i5-12400F and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
These Fortnite FPS results are not arbitrary numbers. They come from calculations informed by thousands of real gaming benchmarks, and the typical accuracy range is around 10% to 15%. That makes them far more useful than generic FPS calculators that simply invent values without a benchmark foundation. Actual in-game performance can still vary with drivers, updates, RAM configuration, cooling, and the exact scene being rendered.
Performance estimates are based on synthetic benchmarks and hardware capabilities.
Results may vary based on drivers, OS, and background processes.
