Can My RTX 4090 Run League of Legends? FPS Estimate & System Requirements (2026)
Estimated RTX 4090 FPS for League of Legends at 1080p, 1440p and 4K, plus the GPU tier you need for 60 FPS.
Last updated 2026-09-09 · evergreen reference
Wondering "can my RTX 4090 run League of Legends?" Our estimate puts it at roughly 480 FPS at 1080p, 380 FPS at 1440p and 219 FPS at 4K. The settings that tax League of Legends most are character quality, environment quality and shadows. FPS figures are editorial estimates from a transparent demand-tier model (TechPowerUp relative-performance indices, retrieved 2026-08-29), not benchmarks. Verify with your own hardware.
Estimated RTX 4090 FPS for League of Legends
Frame-rate estimate by resolution. "Estimate" means modeled, not measured.
Bottom line
The RTX 4090 is comfortably over-spec for League of Legends. It pushes roughly 219 FPS at 4K Ultra and 480 FPS at 1080p — so your limit is the monitor's refresh rate, not the card. This pairing will outlast the game's lifetime on current settings. Note that League of Legends is CPU-bound at high frame rates, so on a RTX 4090 the processor — not the GPU — decides how high your average FPS actually climbs.
RTX 4090 FPS by resolution
Modeled League of Legends performance on a RTX 4090 (tier 1/9).
| Resolution | Est. FPS | Verdict |
|---|---|---|
| 1080p (Full HD) | 480 | Excellent — high/ultra settings |
| 1440p (QHD) | 380 | Excellent — high/ultra settings |
| 4K (UHD) | 219 | Excellent — high/ultra settings |
Verdict for the RTX 4090 + League of Legends pairing
What to expect and where to aim.
Best target resolution
On a RTX 4090, aim for 4K (UHD) in League of Legends. The RTX 4090 is comfortably over-spec for League of Legends. It pushes roughly 219 FPS at 4K Ultra and 480 FPS at 1080p — so your limit is the monitor's refresh rate, not the card. This pairing will outlast the game's lifetime on current settings. Note that League of Legends is CPU-bound at high frame rates, so on a RTX 4090 the processor — not the GPU — decides how high your average FPS actually climbs.
Settings to hit 60 FPS on your RTX 4090
A starting point tuned to this exact pairing; adjust to taste.
CPU, not your RTX 4090, is the limit
Unlike most titles, League of Legends leans on the processor more than the RTX 4090. At 1080p you can already be CPU-limited, so a faster RTX 4090 gives diminishing returns — spend the budget on a stronger CPU or faster RAM. The RTX 4090 has more than enough pixel-pushing power for League of Legends.
You have headroom to spare
With ~480 FPS at 1080p, CPU and RAM speed, not the GPU, decide your cap. You can also enable the game's quality upscaler for crisper 1440p without sacrificing smoothness.
Bottleneck analysis: RTX 4090 + League of Legends
Why this pairing performs the way it does.
What actually bottlenecks League of Legends on a RTX 4090
The limiting factor for this specific pairing is your CPU. League of Legends spends most of its frame budget on the processor (entity counts, physics, draw calls), so the RTX 4090 — a flagship card at relative index 100/100 — rarely reaches its own limit. Upgrading the CPU yields more FPS than upgrading the GPU here.
What GPU tier League of Legends needs
For ~60 FPS targets, based on its demand tier.
Recommended GPU tiers
Nearest real GPUs for each target (estimate).
| Target | Approx. GPU tier needed | Example GPU |
|---|---|---|
| 30 FPS @ 1080p (minimum) | index ≈ 4 | UHD 770 (integrated) |
| 60 FPS @ 1080p (recommended) | index ≈ 7 | UHD 770 (integrated) |
| 60 FPS @ 1440p (high) | index ≈ 11 | UHD 770 (integrated) |
How this estimate is calculated
Full transparency on the model.
Method
League of Legends is assigned a hardware-demand tier 1/9 from its published requirements (or release era + genre). Each GPU has a relative-performance index (RTX 4090 = 100, source TechPowerUp). FPS ≈ 60 × (GPU index ÷ required index)^0.85, then scaled ×0.66 for 1440p and ×0.38 for 4K. FPS figures are editorial estimates from a transparent demand-tier model (TechPowerUp relative-performance indices, retrieved 2026-08-29), not benchmarks. Verify with your own hardware.
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