Fortnite

The AMD Ryzen 9 5900X paired with the NVIDIA GeForce RTX 3080 produces a wide spread of frame rates in Fortnite, ranging from an average of 36.7 FPS at 4K Ultra to 324.4 FPS at 1080p Low. This data reveals a system whose performance is heavily dictated by the graphics settings and resolution selected, with the CPU showing its strength at lower resolutions while the GPU becomes the primary constraint as pixel count and visual fidelity increase.

Resolution Scaling

The measured FPS data shows a clear pattern of diminishing returns as resolution increases, with the most dramatic drop occurring when moving from 1440p to 4K. At High settings, the average frame rate falls from 112 FPS at 2560x1440 to 56.4 FPS at 3840x2160, representing a 49.6% reduction in performance. This steep decline indicates that the RTX 3080’s 10 GB of GDDR6X memory and 760.3 GB/s bandwidth are being taxed heavily at 4K, where the sheer number of pixels requires significantly more memory throughput and shading power.

The scaling pattern changes character at lower settings. At Low settings, the transition from 1080p to 1440p sees the average FPS drop from 324.4 to 205.6, a 36.6% reduction. However, the jump from 1440p Low to 4K Low is less severe proportionally, going from 205.6 to 110.6 FPS, a 46.2% drop. This suggests that at Low settings, the CPU’s 12 cores and 24 threads are better able to keep the GPU fed, but the GPU still becomes the limiting factor at 4K. The data indicates that at 1080p Low, the system is likely CPU-bound, as the Ryzen 9 5900X’s boost clock of 4.80 GHz and 64 MB of L3 cache are sufficient to drive frame rates well above 300 FPS.

At Medium settings, the scaling from 1080p to 1440p results in a 35.0% drop from 225.4 to 146.4 FPS, while the move to 4K Medium further reduces performance to 78.1 FPS. The Ultra preset shows the most constrained scaling, with 115.5 FPS at 1080p falling to 76.9 FPS at 1440p (a 33.4% drop) and then to 36.7 FPS at 4K (a 52.3% drop from 1440p). The data suggests that at Ultra settings, the RTX 3080 is the clear bottleneck across all resolutions, as its 8704 shading units and 68 RT cores are fully utilized, leaving little headroom for higher frame rates.

GPU Role

The RTX 3080’s specifications directly explain the FPS patterns observed in the measured data. With a base clock of 1440 MHz and a boost clock of 1710 MHz, the GPU operates at a relatively high frequency, but the 320 W TDP and dual-slot design indicate a power-hungry component that generates substantial heat under load. The 10 GB GDDR6X memory on a 320-bit bus provides 760.3 GB/s of bandwidth, which is critical for Fortnite’s texture-heavy environments at higher settings.

The GPU’s benchmark scores place it in the 80th percentile among all GPUs, with an average benchmark score of 35787. Its nearest rivals include the AMD Radeon Pro Duo with a deltaPct of -0.2 and the AMD Radeon RX 7900 GRE with a deltaPct of -0.9, indicating that the RTX 3080 sits in a competitive middle ground. The 3DMark Steel Nomad DX12 score of 4407 provides a synthetic reference point, while the PassMark G3D score of 25086 shows strong rasterization performance.

The data shows that at 4K Ultra, the GPU is the limiting factor, as the average FPS of 36.7 is below the 60 FPS threshold that most players would consider smooth. At 1080p Low, however, the GPU is far from being a bottleneck, as the 324.4 FPS average suggests the CPU is the primary driver. The RTX 3080’s FP32 performance of 29.77 TFLOPS and texture rate of 465.1 GTexel/s are substantial, but Fortnite’s Unreal Engine can still saturate these resources at higher settings and resolutions.

FAQ

Q: What is the highest average FPS recorded for this combo in Fortnite?

A: The highest measured average FPS is 324.4, achieved at 1920x1080 with Low settings.

Q: How does the RTX 3080 compare to its nearest rival in synthetic benchmarks?

A: The RTX 3080 has an average benchmark score of 35787, which is 0.2% higher than the AMD Radeon Pro Duo’s score of 35860, and 0.9% lower than the AMD Radeon RX 7900 GRE’s score of 36101.

Q: What is the average FPS at 1440p with Medium settings?

A: At 2560x1440 with Medium settings, the measured average FPS is 146.4.

Q: Does the CPU or GPU become the limiting factor at 4K?

A: At 3840x2160, the GPU is the limiting factor, as evidenced by the average FPS of 36.7 at Ultra settings, which is well below the frame rates seen at lower resolutions.

Q: What percentile does the Ryzen 9 5900X rank in among all CPUs?

A: The Ryzen 9 5900X ranks in the 90th percentile among all CPUs, with an average benchmark score of 39453.

Q: What is the FPS difference between 1080p and 4K at High settings?

A: At High settings, the average FPS drops from 174.7 at 1920x1080 to 56.4 at 3840x2160, a 67.7% reduction.

How This Combo Ranks

The combination of the AMD Ryzen 9 5900X and NVIDIA GeForce RTX 3080 ranks 457th out of 1564 tested combos in Fortnite, placing it in the upper-middle tier of all possible pairings. This rank reflects a balance between the CPU’s strong multi-threaded performance and the GPU’s solid but not top-tier capabilities. The Ryzen 9 5900X’s 90th percentile ranking among CPUs contrasts with the RTX 3080’s 80th percentile among GPUs, suggesting that the CPU is relatively stronger than the GPU in this pairing.

The CPU’s nearest rivals in synthetic benchmarks include the AMD EPYC 4245P with a deltaPct of 0.2 and the Intel Core i7-13700F with a deltaPct of 0.9, indicating the Ryzen 9 5900X is closely matched with these processors. The GPU’s nearest rivals show a similar tight grouping, with the AMD Radeon RX 7900 GRE being 0.9% faster and the NVIDIA GeForce RTX 5070 Ti Mobile being 1% slower. This data suggests that while the combo is not at the absolute top of the rankings, it delivers competitive performance that is well within the range of other high-end pairings.

The combo rank of 457 out of 1564 means that approximately 70.8% of tested combos perform better in Fortnite, but this does not account for the specific settings and resolutions where this pairing excels. At 1080p Low, the system achieves frame rates that would be suitable for competitive play, while at 4K Ultra, it falls below the 60 FPS threshold. The rank should be interpreted as an average across all tested scenarios, not a reflection of the combo’s performance at any single setting.

Settings Recommendations

Based on the measured FPS data, the optimal settings depend on the target resolution and desired frame rate. At 1920x1080, all four presets deliver playable frame rates, with Low achieving 324.4 FPS, Medium at 225.4 FPS, High at 174.7 FPS, and Ultra at 115.5 FPS. For players seeking the highest possible frame rates for competitive play, Low settings at 1080p are the best choice, as the 324.4 FPS average provides a significant margin above typical high-refresh-rate monitors. For a balance of visual quality and performance, High settings at 1080p offer 174.7 FPS, which remains well above the 144 Hz threshold.

At 2560x1440, the data shows that Low settings at 205.6 FPS are ideal for high-refresh-rate gaming, while Medium at 146.4 FPS and High at 112 FPS are also viable for 144 Hz displays. Ultra at 1440p drops to 76.9 FPS, which is still playable but may not fully utilize high-refresh-rate monitors. For 4K gaming at 3840x2160, the options are more limited: Low at 110.6 FPS is the only preset that exceeds the 60 FPS threshold, while Medium at 78.1 FPS and High at 56.4 FPS are borderline. Ultra at 4K is not recommended, as the 36.7 FPS average falls below the minimum for smooth gameplay.

The data indicates that Medium settings offer the best compromise across all resolutions, with 225.4 FPS at 1080p, 146.4 FPS at 1440p, and 78.1 FPS at 4K. This preset provides a significant visual improvement over Low while maintaining frame rates that are playable at all tested resolutions.

Measured FPS Breakdown

The complete measured FPS data for this combo in Fortnite is as follows:

At 1920x1080:

• Low settings: average FPS of 324.4
• Medium settings: average FPS of 225.4
• High settings: average FPS of 174.7
• Ultra settings: average FPS of 115.5

At 2560x1440:

• Low settings: average FPS of 205.6
• Medium settings: average FPS of 146.4
• High settings: average FPS of 112
• Ultra settings: average FPS of 76.9

At 3840x2160:

• Low settings: average FPS of 110.6
• Medium settings: average FPS of 78.1
• High settings: average FPS of 56.4
• Ultra settings: average FPS of 36.7

The data shows a consistent pattern where each increase in settings tier reduces the average FPS by a similar proportion across all resolutions. The difference between Low and Ultra settings is most pronounced at 1080p, where the FPS drops from 324.4 to 115.5, a 64.4% reduction. At 4K, the same settings change results in a drop from 110.6 to 36.7, a 66.8% reduction. This consistency suggests that the GPU’s shading units and memory bandwidth are the primary determinants of performance across all settings, with the CPU providing sufficient headroom to avoid becoming a bottleneck at any resolution tested.