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 369 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 323 FPS. At 4K, all settings exceed 210 FPS.
The GeForce RTX 4090 is 1277% above the recommended GPU (GeForce GTX 560) for League of Legends. The Ryzen 7 PRO 4750U is 131% above the recommended CPU (Core i5-3330).
The Ryzen 7 PRO 4750U determines the performance ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GPU has headroom.
At 1080p low, the Ryzen 7 PRO 4750U sets the ceiling at about 369 FPS, while the GeForce RTX 4090 could reach 700 FPS. In this scenario, the CPU limits the GPU potential by 47% (FPS gap: 331 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Ryzen 7 PRO 4750U 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 47% | CPU Limits GPU 37% | CPU Limits GPU 23% | CPU Limits GPU 12% |
| 1440p (2K QHD) | CPU Limits GPU 43% | CPU Limits GPU 29% | CPU Limits GPU 14% | CPU Limits GPU 7% |
| 4K (Ultra HD) | CPU Limits GPU 19% | CPU Limits GPU 12% | CPU Limits GPU 9% | CPU Limits GPU 10% |
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) | CPU24% - 37% <> GPU38% - 42% <> | CPU29% - 52% <> GPU41% - 43% <> | CPU29% - 52% <> GPU41% - 43% <> | CPU28% - 45% <> GPU42% - 43% <> |
| 1440p (2K QHD) | CPU22% - 30% <> GPU51% - 51% | CPU27% - 43% <> GPU52% - 54% <> | CPU27% - 43% <> GPU52% - 54% <> | CPU26% - 37% <> GPU53% - 57% <> |
| 4K (Ultra HD) | CPU22% - 30% <> GPU64% - 64% | CPU27% - 43% <> GPU65% - 68% <> | CPU27% - 43% <> GPU65% - 68% <> | CPU25% - 37% <> GPU68% - 71% <> |
The Ryzen 7 PRO 4750U + GeForce RTX 4090 pairing runs this title with CPU utilization between 22% and 52% and GPU utilization between 38% and 71%. Ryzen 7 PRO 4750U keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 42% at 1080p to 67% at 4K, while CPU averages move from 37% to 32%.
The utilization pattern is relatively balanced. The GeForce RTX 4090 reaches 70% average at its highest-load preset, while the Ryzen 7 PRO 4750U peaks at 40% average, with no single component consistently acting as a hard bottleneck.
At 1080p, averages sit around CPU 37% and GPU 42%. At 1440p, that shifts to CPU 32% and GPU 53%, and at 4K it reaches CPU 32% and GPU 67%. 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 31% (25-37%) and GPU 70% (68-71%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Ryzen 7 PRO 4750U remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Ryzen 7 PRO 4750U 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 131% above and your GPU is 1277% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+131%vsrecommended
+1277%vsrecommended
+604%vsminimum
+6755%vsminimum
Yes, the Ryzen 7 PRO 4750U paired with the GeForce RTX 4090 can run League of Legends smoothly up to 4k achieving around 210 FPS at Ultra quality. Your GPU is 1277% above the recommended specs, and your CPU is 131% 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 7 PRO 4750U 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.
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 7 PRO 4750U 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.
