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 399 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 357 FPS. At 4K, all settings exceed 239 FPS.
The GeForce RTX 4090 is 1277% above the recommended GPU (GeForce GTX 560) for League of Legends. The Core i5-12600T is 172% above the recommended CPU (Core i5-3330).
League of Legends supports: AFMF. This game does not have native DLSS 3 or FSR 3 Frame Generation support. AFMF is AMD-exclusive and not compatible with GeForce RTX 4090.
At lower resolutions (1080p (low/medium), 1440p (low/medium), 4k low), the Core i5-12600T sets the FPS ceiling. As graphical load increases at (1440p ultra), the GeForce RTX 4090 becomes the FPS-limiting side. The FPS ceiling is closely matched at 1080p (high/ultra), 1440p high, 4k (medium/high/ultra).
Approximated average price on current market:
Combo price: $1872. At 1080p Ultra, this combo delivers 399 FPS, equivalent to 0.21 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.233 fps/$ | 0.233 fps/$ | 0.233 fps/$ | 0.213 fps/$ |
| 1440p | 0.233 fps/$ | 0.233 fps/$ | 0.229 fps/$ | 0.191 fps/$ |
| 4k | 0.221 fps/$ | 0.194 fps/$ | 0.171 fps/$ | 0.128 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 1080p low, the Core i5-12600T sets the ceiling at about 436 FPS, while the GeForce RTX 4090 could reach 671 FPS. In this scenario, the CPU limits the GPU potential by 35% (FPS gap: 235 FPS). Overall distribution: CPU limits 5/12 cells, GPU limits 1/12, balanced 6/12.
Your Core i5-12600T 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 35% | CPU Limits GPU 20% | Balanced | Balanced |
| 1440p (2K QHD) | CPU Limits GPU 30% | CPU Limits GPU 11% | Balanced | GPU Limits CPU 7% |
| 4K (Ultra HD) | CPU Limits GPU 8% | Balanced | Balanced | 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.
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 172% above and your GPU is 1277% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+172%vsrecommended
+1277%vsrecommended
+731%vsminimum
+6755%vsminimum
Yes, the Core i5-12600T paired with the GeForce RTX 4090 can run League of Legends smoothly up to 4k achieving around 239 FPS at Ultra quality. Your GPU is 1277% above the recommended specs, and your CPU is 172% above the recommended requirements.
This CPU + GPU combo costs approximately $1872 ($223 CPU (Rank #254 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 i5-12600T 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, 1440p medium, 4k low. GPU fully utilized at: 1440p ultra.
League of Legends currently only supports AFMF (AMD Fluid Motion Frames) for frame generation, which is an AMD-exclusive technology. Because you are using an NVIDIA GPU, you cannot use Frame Generation for this specific game.
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 i5-12600T 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.
