As the world's most popular MOBA, League of Legends runs on a proprietary engine that has been updated for over a decade. Recently, Riot increased the minimum requirements to include AVX instruction support and dropped support for older OSs and DirectX 9. While still lightweight, modern team fights with complex particle effects can strain older integrated graphics. The game scales well with single-thread CPU performance, meaning even modern entry-level processors can deliver high frame rates.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 326 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 326 FPS. At 4K, all settings exceed 240 FPS.
The GeForce RTX 4090 is 1277% above the recommended GPU (GeForce GTX 560) for League of Legends. The Core i5-10400F is 103% above the recommended CPU (Core i5-3330).
At lower resolutions (all 1080p settings, 1440p (low/medium/high), 4k (low/medium)), the Core i5-10400F determines the performance ceiling. As graphical load increases at (4k ultra), the GeForce RTX 4090 takes over as the primary performance factor. The system is well balanced at 1440p ultra, 4k high.
Approximated average price on current market:
Combo price: $1751. At 1080p Ultra, this combo delivers 326 FPS, equivalent to 0.19 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.186 fps/$ | 0.186 fps/$ | 0.186 fps/$ | 0.186 fps/$ |
| 1440p | 0.186 fps/$ | 0.186 fps/$ | 0.186 fps/$ | 0.186 fps/$ |
| 4k | 0.186 fps/$ | 0.186 fps/$ | 0.173 fps/$ | 0.137 fps/$ |
* Table values represent FPS per Dollar (higher is better)
At 1080p low, the Core i5-10400F sets the ceiling at about 326 FPS, while the GeForce RTX 4090 could reach 680 FPS. In this scenario, the CPU limits the GPU potential by 52% (FPS gap: 354 FPS). Overall distribution: CPU limits 9/12 cells, GPU limits 1/12, balanced 2/12.
Your Core i5-10400F 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 52% | CPU Limits GPU 42% | CPU Limits GPU 28% | CPU Limits GPU 18% |
| 1440p (2K QHD) | CPU Limits GPU 47% | CPU Limits GPU 34% | CPU Limits GPU 20% | Balanced |
| 4K (Ultra HD) | CPU Limits GPU 26% | CPU Limits GPU 11% | Balanced | GPU Limits CPU 8% |
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) | CPU13% - 35% <> GPU37% - 40% <> | CPU19% - 49% <> GPU39% - 40% <> | CPU19% - 49% <> GPU39% - 40% <> | CPU18% - 44% <> GPU40% - 42% <> |
| 1440p (2K QHD) | CPU8% - 22% <> GPU48% - 49% <> | CPU14% - 35% <> GPU49% - 52% <> | CPU14% - 35% <> GPU49% - 52% <> | CPU12% - 29% <> GPU51% - 55% <> |
| 4K (Ultra HD) | CPU8% - 22% <> GPU61% - 63% <> | CPU14% - 35% <> GPU63% - 68% <> | CPU14% - 35% <> GPU63% - 68% <> | CPU12% - 29% <> GPU66% - 71% <> |
The Core i5-10400F + GeForce RTX 4090 pairing runs this title with CPU utilization between 8% and 49% and GPU utilization between 37% and 71%. Core i5-10400F keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 40% at 1080p to 66% at 4K, while CPU averages move from 31% to 21%.
The utilization pattern is relatively balanced. The GeForce RTX 4090 reaches 68% average at its highest-load preset, while the Core i5-10400F peaks at 34% average, with no single component consistently acting as a hard bottleneck.
At 1080p, averages sit around CPU 31% and GPU 40%. At 1440p, that shifts to CPU 21% and GPU 50%, and at 4K it reaches CPU 21% and GPU 66%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
4K (Ultra HD) Ultra is the most balanced preset based on this dataset. It runs around CPU 20% (12-29%) and GPU 68% (66-71%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Core i5-10400F remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Core i5-10400F 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 103% above and your GPU is 1277% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+103%vsrecommended
+1277%vsrecommended
+521%vsminimum
+6755%vsminimum
Yes, the Core i5-10400F paired with the GeForce RTX 4090 can run League of Legends smoothly up to 4k achieving around 240 FPS at Ultra quality. Your GPU is 1277% above the recommended specs, and your CPU is 103% above the recommended requirements.
This CPU + GPU combo costs approximately $1751 ($102 CPU (Rank #107 Value) + $1649 GPU (Rank #77 Value)). Since the CPU is the main limiting factor, investing in a stronger processor will improve your framerates and overall value. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).
For League of Legends, upgrading the CPU would have the biggest impact on performance. The Core i5-10400F 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, 4k low, 4k medium. GPU fully utilized at: 4k ultra.
League of Legends 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.
League of Legends requires at minimum a Core i3-530 (CPU) and GeForce 9600 GT (GPU) with 2 GB RAM and 16 GB storage. For the recommended experience, you need a Core i5-3330 and GeForce GTX 560 with 4 GB RAM. Your Core i5-10400F and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
These League of Legends 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.
