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 450 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 344 FPS. At 4K, all settings exceed 216 FPS.
The GeForce RTX 4090 is 1277% above the recommended GPU (GeForce GTX 560) for League of Legends. The Ryzen 5 8640HS is 210% above the recommended CPU (Core i5-3330).
At lower resolutions (1080p (low/medium), 1440p low, 4k (low/medium/ultra)), the Ryzen 5 8640HS sets the FPS ceiling. As graphical load increases at (1080p (high/ultra)), the GeForce RTX 4090 becomes the FPS-limiting side. The FPS ceiling is closely matched at 1440p (medium/high/ultra), 4k high.
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1080p low, the Ryzen 5 8640HS sets the ceiling at about 496 FPS, while the GeForce RTX 4090 could reach 700 FPS. In this scenario, the CPU limits the GPU potential by 29% (FPS gap: 204 FPS). Overall distribution: CPU limits 6/12 cells, GPU limits 2/12, balanced 4/12.
Your Ryzen 5 8640HS 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 29% | CPU Limits GPU 14% | GPU Limits CPU 6% | GPU Limits CPU 10% |
| 1440p (2K QHD) | CPU Limits GPU 22% | Balanced | Balanced | Balanced |
| 4K (Ultra HD) | CPU Limits GPU 12% | CPU Limits GPU 13% | Balanced | CPU Limits GPU 7% |
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.
A component can still be the FPS limiter without reaching 100% utilization. The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU11% - 31% <> GPU24% - 35% <> | CPU16% - 42% <> GPU24% - 37% <> | CPU16% - 42% <> GPU24% - 37% <> | CPU15% - 40% <> GPU26% - 38% <> |
| 1440p (2K QHD) | CPU8% - 23% <> GPU33% - 47% <> | CPU14% - 33% <> GPU33% - 49% <> | CPU14% - 33% <> GPU33% - 49% <> | CPU13% - 30% <> GPU36% - 51% <> |
| 4K (Ultra HD) | CPU8% - 23% <> GPU63% - 70% <> | CPU14% - 33% <> GPU67% - 71% <> | CPU14% - 33% <> GPU67% - 71% <> | CPU13% - 29% <> GPU69% - 75% <> |
The Ryzen 5 8640HS + GeForce RTX 4090 pairing runs this title with CPU utilization between 8% and 42% and GPU utilization between 24% and 75%. Ryzen 5 8640HS keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 31% at 1080p to 69% at 4K, while CPU averages move from 27% to 21%.
The utilization pattern is relatively even. The GeForce RTX 4090 reaches 72% average at its highest-load preset, while the Ryzen 5 8640HS peaks at 29% average. This suggests a fairly controlled load distribution, but the actual FPS-limiting side should still be read from the limiter analysis above.
At 1080p, averages sit around CPU 27% and GPU 31%. At 1440p, that shifts to CPU 22% and GPU 42%, and at 4K it reaches CPU 21% and GPU 69%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
4K (Ultra HD) Ultra is the most balanced preset based on this dataset. It runs around CPU 21% (13-29%) and GPU 72% (69-75%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Ryzen 5 8640HS remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Ryzen 5 8640HS and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. They describe hardware load, but they do not directly tell you which component sets the FPS ceiling.
Important: a CPU or GPU can still be the FPS limiter without reaching 100% utilization. Two processors can both show 40% usage and still deliver very different frame rates, depending on per-core speed, cache, engine threading, driver overhead, and frame preparation efficiency.
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 210% above and your GPU is 1277% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+210%vsrecommended
+1277%vsrecommended
+846%vsminimum
+6755%vsminimum
Yes, the Ryzen 5 8640HS paired with the GeForce RTX 4090 can run League of Legends smoothly up to 4k achieving around 216 FPS at Ultra quality. Your GPU is 1277% above the recommended specs, and your CPU is 210% above the recommended requirements.
Price data is not currently available for this combination. In general, look for setups where the CPU and GPU are balanced — this ensures you're not overspending on one component that the other can't keep up with.
For League of Legends, upgrading the CPU would have the biggest impact on performance. The Ryzen 5 8640HS 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, 1440p low, 4k low, 4k medium, 4k ultra. GPU fully utilized at: 1080p high, 1080p 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 Ryzen 5 8640HS 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.
