Fortnite

Fortnite on the AMD Ryzen 7 5800XT paired with the Intel Arc B580 presents a dataset where resolution scaling dramatically exposes the system's performance ceiling. The measured frames per second (FPS) across 1080p, 1440p, and 4K reveal a component hierarchy that shifts from a CPU-bound scenario at lower resolutions to a heavily GPU-limited one at 4K. The data shows a clear and consistent degradation as pixel count rises, with the most significant single-step drop occurring between 1440p and 4K at the High preset, where average FPS falls from 69 to 37 — a 46% reduction. This stark cliff indicates that the Arc B580's rendering throughput is the primary constraint at higher resolutions, while the Ryzen 7 5800XT's 8-core, 16-thread configuration is sufficient to feed the GPU at lower settings.

Resolution Scaling

The FPS scaling from 1920x1080 to 3840x2160 is not linear, and the pattern of these drops is highly diagnostic. At 1080p with Low settings, the system achieves 200 average FPS, suggesting that the CPU, with its 3.80 GHz base and 4.80 GHz boost clocks, is capable of driving a high frame rate ceiling. Moving to 1440p Low drops the average to 127 FPS, a 36.5% decrease, which is roughly proportional to the increase in pixel count (1.78x). However, the transition from 1440p to 4K at Low settings shows an even steeper decline, falling from 127 to 67 FPS — a 47.2% drop. This accelerated degradation at 4K across all settings points directly to the GPU's pixel fillrate and memory bandwidth becoming the limiting factor, as the Arc B580's 12 GB of GDDR6 memory on a 192-bit bus (456.0 GB/s) is saturated by the 8.3 million pixels of 4K.

The data for the Medium preset confirms this trend with minimum and maximum FPS values, providing a more detailed view of frame time consistency. At 1080p Medium, the average is 141 FPS with a minimum of 120 and maximum of 162, a relatively tight range indicating stable performance. At 1440p Medium, the average drops to 89 FPS with a range of 76 to 103, showing that frame pacing remains consistent even as load increases. The 4K Medium result, however, shows an average of 47 FPS with a range of 40 to 54, and the minimum-to-maximum spread of 14 FPS is proportionally larger relative to the average, suggesting the GPU is struggling to maintain consistent output under extreme load. This is a classic sign of the render pipeline being fully saturated.

The High and Ultra presets illustrate the cost of visual fidelity. At 1080p High, the average is 109 FPS, which is 45.5% lower than the Low preset's 200 FPS, indicating that the additional shading and texture work reduces throughput significantly. At 4K High, the system falls to just 37 FPS, which is barely playable for a competitive title. The Ultra preset is the most demanding, with 1080p Ultra achieving 72 FPS, 1440p Ultra at 46 FPS, and 4K Ultra collapsing to 24 FPS. This final figure, 24 FPS, is below the threshold for smooth motion and confirms that the Ultra preset at 4K is not viable for this combination, reinforcing that the Arc B580's 13.67 TFLOPS of FP32 compute is the hard limit.

FAQ

Q: What is the best resolution for this CPU/GPU combo to maintain a 60 FPS average?

A: The data shows that the only resolution and settings combinations that achieve an average above 60 FPS are 1080p Low (200 FPS), 1080p Medium (141 FPS), 1080p High (109 FPS), 1080p Ultra (72 FPS), 1440p Low (127 FPS), and 1440p Medium (89 FPS). At 1440p High, the average drops to 69 FPS, which is still above 60, but 1440p Ultra falls to 46 FPS. The 4K resolution never exceeds 67 FPS, which occurs only at Low settings.

Q: How does the system perform at 4K with the High preset?

A: The measured data indicates an average FPS of 37 at 3840x2160 with High settings. This is a significant drop from the 69 FPS average at 2560x1440 High, representing a 46.4% performance loss. This result clearly demonstrates that the Intel Arc B580 is the bottleneck at this resolution and preset.

Q: Is the Ryzen 7 5800XT a limiting factor in Fortnite?

A: Based on the scaling data, the CPU appears to be less of a constraint at higher resolutions. At 1080p Low, the system produces 200 FPS, which is a high frame rate that could be CPU-limited. However, the consistent and significant FPS drops when increasing resolution to 1440p and 4K indicate that the GPU becomes the dominant limiting factor, as the CPU's 8 cores and 16 threads can maintain high instruction throughput, but the GPU cannot render the frames fast enough.

Q: What is the difference between the Low and Ultra presets at 1080p?

A: The Low preset at 1920x1080 achieves an average of 200 FPS, while the Ultra preset achieves 72 FPS. This represents a 64% reduction in average frame rate when moving from the lowest to the highest visual quality. The data shows that the Ultra preset demands significantly more from the GPU's shading units and texture mapping units, reducing raw throughput.

Q: Does the system have any frame rate stability issues at 1440p Medium?

A: The measured data for 1440p Medium shows a minimum FPS of 76 and a maximum of 103, with an average of 89 FPS. The delta between the minimum and average is 13 FPS, which indicates a relatively narrow band of frame times. This suggests the system maintains consistent performance without severe dips, and the 89 FPS average is well above the 60 FPS threshold for smooth gameplay.

Q: How does the combo rank in the database for Fortnite?

A: The comboRankInGame field places this specific configuration at rank 2779 out of 3700 tested combinations. This position in the 75th percentile of tested combos indicates that while it is not a top-tier performer, it is not among the lowest performing configurations either, and it is capable of running the game at playable frame rates with adjusted settings.

GPU Role

The Intel Arc B580's specifications directly explain the measured performance in Fortnite. With a base and boost clock of 2670 MHz, the GPU's raw compute capability is defined by its 2560 shading units, which produce a FP32 throughput of 13.67 TFLOPS. This is a mid-range compute figure, and the benchmark data confirms that it is insufficient for high-refresh-rate gaming at 4K, as evidenced by the 4K Ultra average of 24 FPS. The GPU's texture rate of 427.2 GTexel/s and pixel rate of 213.6 GPixel/s are the theoretical limits for fill-rate-bound scenarios, and the measured FPS drops when moving from Medium to High presets suggest that the additional texture filtering and pixel shading work are directly taxing these units.

The 12 GB of GDDR6 memory on a 192-bit bus provides a bandwidth of 456.0 GB/s. This is a critical resource for Fortnite, which uses large, detailed textures. The measured data shows that at 1080p, the High preset (109 FPS) is only 29.2% slower than Medium (141 FPS), but at 4K, the High preset (37 FPS) is 21.3% slower than Medium (47 FPS). This disproportionate drop at 4K suggests that memory bandwidth is becoming a limiting factor, as the GPU must access more texture data for the higher resolution, and the 456.0 GB/s bandwidth cannot keep up with the demand. The GPU's percentile ranking of 68 places it above average among all tested GPUs, but its nearest rivals include the RTX 2080 and RTX 3080, indicating it trades blows with older high-end cards in compute benchmarks, though it lacks the raw bandwidth of the latter.

Measured FPS Breakdown

At 1920x1080, the data shows a full range of performance across four presets. Low settings deliver an average of 200 FPS, which is the highest recorded in the dataset. Medium settings reduce this to 141 FPS, with a minimum of 120 and a maximum of 162 FPS. High settings further reduce the average to 109 FPS. Ultra settings produce an average of 72 FPS. The step from Low to Medium is a 29.5% reduction, while the step from Medium to High is a 22.7% reduction, and the step from High to Ultra is a 33.9% reduction. This shows that the Ultra preset has a disproportionately high cost relative to the High preset, likely due to advanced shadow and post-processing effects.

At 2560x1440, the performance scales down as expected. Low settings achieve 127 FPS, which is a 36.5% drop from the 1080p Low result. Medium settings achieve 89 FPS, with a minimum of 76 and a maximum of 103 FPS. High settings achieve 69 FPS, and Ultra settings drop to 46 FPS. The delta between Medium and High at 1440p is 22.5%, which is nearly identical to the 1080p delta, indicating that the relative cost of the preset is consistent regardless of resolution. However, the delta between High and Ultra at 1440p is 33.3%, which is very close to the 1080p delta, showing that the Ultra preset's cost scales with resolution.

At 3840x2160, the GPU is clearly overwhelmed. Low settings produce 67 FPS, which is the only playable 4K result. Medium settings drop to 47 FPS, with a minimum of 40 and a maximum of 54 FPS. High settings fall to 37 FPS, and Ultra settings produce just 24 FPS. The scaling from Low to Medium at 4K is a 29.9% reduction, which is similar to the 1080p scaling, but the absolute frame rates are much lower. The data shows that the system cannot maintain a 60 FPS average at 4K with any setting other than Low, and even that result is marginal for competitive play.

Settings Recommendations

Based on the measured FPS rows, the optimal preset for a balance of visual quality and performance is Medium at 1440p. This configuration achieves an average of 89 FPS with a minimum of 76 FPS, ensuring that frame rates stay above the 60 FPS threshold for smooth gameplay in nearly all scenarios. The 1440p Medium preset provides a significant visual upgrade over 1080p while still maintaining a high frame rate, and the min/max range of 76 to 103 FPS indicates a stable experience without severe hitches. For users with 1080p displays, the High preset at 109 FPS is recommended, as it offers better visual fidelity than Medium while still providing a high refresh rate experience that can take advantage of 120Hz monitors in most cases.

For 4K users, the data suggests that the Low preset is the only viable option, achieving 67 FPS, but this comes at a significant visual cost. The Medium preset at 4K (47 FPS) is below the 60 FPS threshold and may result in a less responsive experience. The Ultra preset should be avoided at all resolutions if frame rate is a priority, as even at 1080p it only achieves 72 FPS, which is a 34% reduction from the High preset's 109 FPS. The data indicates that the Ultra preset's additional visual effects do not justify the performance penalty, and the High preset at 1080p or Medium at 1440p provides the best experience per the measured rows.

CPU Role

The AMD Ryzen 7 5800XT, with its 8 cores and 16 threads based on the Zen 3 architecture, provides a solid foundation for Fortnite. The CPU's benchmark scores are robust, with a Cinebench R23 multicore score of 23794 and a single-core score of 3359, indicating strong single-threaded performance which is critical for game logic and draw call submission. The 3dmark_16_threads score of 7683 and the passmark single-thread score of 3535 further corroborate its capability. The CPU's percentile ranking of 81 places it in the top 20% of all tested CPUs, and its nearest rivals include the Ryzen 7 7840H and Ryzen 5 9600X, showing it is competitive with newer mobile and desktop parts.

In Fortnite, the CPU's role is evident in the 1080p Low result of 200 FPS. This high frame rate suggests that the CPU can quickly process the game's instructions and prepare frames for the GPU. However, the data does not show a CPU bottleneck at lower resolutions, as the FPS scales down consistently when the GPU load increases. The CPU's 32 MB of shared L3 cache and 4,150 million transistors on a 7 nm process provide ample resources for the game's data. The memory bandwidth of 51.2 GB/s for DDR4 is sufficient for the CPU's needs, and the data shows that the CPU is not the primary limiting factor in this system, as the GPU's rendering performance is the bottleneck at all resolutions above 1080p Low.

How This Combo Ranks

The comboRankInGame for this AMD Ryzen 7 5800XT and Intel Arc B580 configuration is 2779 out of 3700 tested combinations. This rank places the system in the 75th percentile of all tested combos, meaning that approximately 25% of tested configurations perform worse, and 75% perform better. This is a moderate ranking that reflects the GPU's mid-range positioning; the Arc B580's percentile of 68 among GPUs is slightly lower than the CPU's percentile of 81 among CPUs, indicating that the GPU is the weaker component in this pairing. The CPU's nearest rivals include the Ryzen 7 7840H and Ryzen 5 9600X, with deltaPct values of 0 and 0.6, respectively, showing that the CPU's average benchmark score is nearly identical to these alternatives.

The GPU's nearest rivals are telling: the RX 580 2048SP (deltaPct -0.2), RTX 2080 (deltaPct 0.6), and RTX 3080 (deltaPct -0.7). This places the Arc B580's average benchmark score of 23021 in the same ballpark as these older or lower-tier cards, despite the Arc B580 being a newer generation. The 4K Fortnite results align with this ranking, as the 4K High average of 37 FPS is consistent with what one might expect from a GPU in this performance tier. The rank of 2779 is not a top-tier result, and the data suggests that for Fortnite specifically, this combination is better suited for 1080p and 1440p gaming, where it can provide high frame rates, rather than 4K gaming where it falls below playable thresholds for most presets.