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 373 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 299 FPS. At 4K, all settings exceed 193 FPS.
The GeForce RTX 4090 is 1277% above the recommended GPU (GeForce GTX 560) for League of Legends. The Ryzen Threadripper PRO 3975WX is 872% above the recommended CPU (Core i5-3330).
The Ryzen Threadripper PRO 3975WX sets the FPS ceiling at 1440p (low/medium), 4k (low/medium/high), while the GeForce RTX 4090 still has headroom. The FPS ceiling is closely matched at all 1080p settings, 1440p (high/ultra), 4k ultra.
Approximated average price on current market:
Combo price: $2017. At 1080p Ultra, this combo delivers 373 FPS, equivalent to 0.18 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.324 fps/$ | 0.278 fps/$ | 0.235 fps/$ | 0.185 fps/$ |
| 1440p | 0.222 fps/$ | 0.192 fps/$ | 0.170 fps/$ | 0.148 fps/$ |
| 4k | 0.167 fps/$ | 0.146 fps/$ | 0.118 fps/$ | 0.096 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1440p low, the Ryzen Threadripper PRO 3975WX sets the ceiling at about 447 FPS, while the GeForce RTX 4090 could reach 509 FPS. In this scenario, the CPU limits the GPU potential by 12% (FPS gap: 62 FPS). Overall distribution: CPU limits 6/12 cells, GPU limits 0/12, balanced 6/12.
The Ryzen Threadripper PRO 3975WX and GeForce RTX 4090 stay close in effective frame-generation ceiling across most presets, so neither side consistently suppresses the other by a large margin.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | Balanced | Balanced | Balanced | CPU Limits GPU 6% |
| 1440p (2K QHD) | CPU Limits GPU 12% | CPU Limits GPU 8% | Balanced | Balanced |
| 4K (Ultra HD) | CPU Limits GPU 6% | CPU Limits GPU 9% | CPU Limits GPU 8% | Balanced |
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) | CPU9% - 21% <> GPU24% - 26% <> | CPU15% - 32% <> GPU27% - 27% | CPU15% - 32% <> GPU27% - 27% | CPU14% - 29% <> GPU28% - 29% <> |
| 1440p (2K QHD) | CPU9% - 22% <> GPU27% - 29% <> | CPU15% - 32% <> GPU28% - 32% <> | CPU15% - 32% <> GPU28% - 32% <> | CPU13% - 29% <> GPU31% - 34% <> |
| 4K (Ultra HD) | CPU6% - 19% <> GPU52% - 57% <> | CPU11% - 28% <> GPU52% - 60% <> | CPU11% - 28% <> GPU52% - 60% <> | CPU10% - 25% <> GPU54% - 62% <> |
The Ryzen Threadripper PRO 3975WX + GeForce RTX 4090 pairing runs this title with CPU utilization between 6% and 32% and GPU utilization between 24% and 62%. Ryzen Threadripper PRO 3975WX keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 27% at 1080p to 56% at 4K, while CPU averages move from 21% to 18%.
The utilization pattern is relatively even. The GeForce RTX 4090 reaches 58% average at its highest-load preset, while the Ryzen Threadripper PRO 3975WX peaks at 24% 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 21% and GPU 27%. At 1440p, that shifts to CPU 21% and GPU 30%, and at 4K it reaches CPU 18% and GPU 56%. 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 18% (10-25%) and GPU 58% (54-62%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Ryzen Threadripper PRO 3975WX remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Ryzen Threadripper PRO 3975WX 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 872% above and your GPU is 1277% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+872%vsrecommended
+1277%vsrecommended
+2868%vsminimum
+6755%vsminimum
Yes, the Ryzen Threadripper PRO 3975WX paired with the GeForce RTX 4090 can run League of Legends smoothly up to 4k achieving around 193 FPS at Ultra quality. Your GPU is 1277% above the recommended specs, and your CPU is 872% above the recommended requirements.
This CPU + GPU combo costs approximately $2017 ($368 CPU (Rank #230 Value) + $1649 GPU (Rank #77 Value)). Your Ryzen Threadripper PRO 3975WX provides phenomenal top-tier performance but at a premium enthusiast price. Since you are essentially at the ceiling of current hardware capabilities, there are no meaningful performance upgrades available. However, if you wanted a more cost-effective build that still delivers a great experience, you could theoretically step down to a high-end processor with a significantly better value rating. For example, the EPYC 9355P is a great upgrade option for around $2998 (Rank #287 for value).
Your Ryzen Threadripper PRO 3975WX is already an incredibly powerful processor. While it's technically the first component to hit its limit (which is completely normal in state-of-the-art builds), there is no meaningful upgrade path that would drastically improve your League of Legends performance right now. CPU fully utilized at: 1440p low, 1440p medium, 4k low, 4k medium, 4k high.
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 Threadripper PRO 3975WX 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.
