Fortnite

The Intel Core i5-10400F paired with the Intel Arc B580 presents a specific performance profile in Fortnite, where the data indicates a clear shift in system bottleneck depending on resolution and graphical load. At 1080p, the combination delivers high frame rates that suggest the CPU is a limiting factor at lower settings. As resolution increases to 4K, the GPU becomes the dominant constraint, with frame rates dropping significantly under higher presets. This analysis breaks down the measured results, settings behavior, and how this specific component pairing compares to other tested configurations in the database.

Resolution Scaling

The measured FPS data shows a dramatic and predictable scaling pattern as resolution increases from 1920x1080 to 3840x2160, but the rate of decline is heavily dependent on the graphics preset. At Low settings, the average frame rate falls from 198.8 FPS at 1080p to 124 FPS at 1440p, a reduction of approximately 37.6%, and then further down to 65.1 FPS at 4K, which represents a 67.3% drop from the 1080p baseline. This steep decline, particularly in the jump to 4K, indicates that even at Low settings, the GPU’s rendering workload is scaling heavily with pixel count.

The scaling behavior under High settings is less severe in absolute terms but still substantial. The average FPS at 1080p is 108, which drops to 68 at 1440p (a 37% reduction) and then to 35.5 at 4K (a 67.1% reduction from 1080p). The similarity in the percentage drop between Low and High settings suggests that the rendering pipeline is consistently bound by the GPU’s pixel throughput as resolution increases, rather than by CPU-side draw calls or physics calculations. This is a strong indicator that the Intel Arc B580’s fill rate and memory bandwidth are the primary limiting factors at higher resolutions, regardless of the complexity of the scene.

At 4K, the data shows a stark divide between presets. The Low preset manages 65.1 FPS, while Medium drops to 50.2 FPS, High drops to 35.5 FPS, and Ultra falls to 25.5 FPS. The spread between Low and Ultra at 4K is 39.6 FPS, suggesting that the game’s more demanding effects, such as shadows and post-processing, have a multiplicative effect on GPU load. For the i5-10400F, the data suggests that the CPU is likely not a bottleneck at 4K, as the frame rates are too low to saturate its six cores and twelve threads. At 1080p, however, the 198.8 FPS result at Low settings likely approaches the CPU’s practical limit in this game, as the GPU has headroom to render more frames but is waiting on the processor.

Settings Recommendations

Based strictly on the measured rows, the Medium preset at 1080p provides the most balanced experience, delivering an average of 139.1 FPS. This is a significant jump from the High preset’s 108 FPS (a 28.8% increase in frame rate) while requiring only a step down in visual fidelity. The Low preset at 1080p yields 198.8 FPS, which is ideal for competitive play, but the Medium result is still well above the 60 FPS threshold and offers a better visual experience for most players. The data shows that the Ultra preset at 1080p produces 73.2 FPS, which is playable but represents a 47.4% reduction from Medium, making it a less attractive option given the substantial performance cost.

At 1440p, the Medium preset again appears as the sweet spot, with an average of 91.2 FPS. This is a substantial drop from the 1080p Medium result (a 34.4% reduction), but it remains comfortably above 60 FPS. The High preset at 1440p yields 68 FPS, which is still smooth, but Medium offers a 34.1% higher frame rate at the cost of some visual quality. The Low preset at 1440p hits 124 FPS, which is excellent for high-refresh-rate monitors, but the Medium preset offers a better balance for those who prioritize both responsiveness and image quality.

For 4K, the data is less encouraging. The only playable option is the Low preset, which averages 65.1 FPS. The Medium preset at 50.2 FPS is borderline, and High and Ultra dip below 36 FPS, making them unsuitable for smooth gameplay. Therefore, for the most consistent experience across all resolutions, the Medium preset at 1080p is recommended, as it offers a high frame rate that leverages the system’s capabilities without pushing the GPU to its limits. For users with 1440p panels, Medium is also the recommended choice, while 4K users should stick to Low for playable performance.

GPU Role

The Intel Arc B580’s specifications in the fact pack directly explain the measured performance. The GPU features 12 GB of GDDR6 memory on a 192-bit bus, providing a bandwidth of 456.0 GB/s. This memory configuration is a key factor in the 4K results, where the frame rates drop significantly under heavy presets. At 4K Ultra, the average FPS is 25.5, which suggests that the GPU is not only fill-rate limited but also potentially constrained by memory bandwidth when rendering at such high pixel densities with complex shaders.

The core clock is listed as a base and boost of 2670 MHz, which is a relatively high frequency for a GPU in this class. This high clock speed contributes to the strong 1080p results, where the card can push 198.8 FPS at Low settings. The shading units are 2560, with 160 TMUs and 80 ROPs. The ROP count of 80 is crucial for pixel fill rate, and the data shows that at 4K, the card is clearly limited by this aspect, as the frame rates drop proportionally with the increase in pixel count.

The GPU’s FP32 performance is rated at 13.67 TFLOPS, which is a measure of its raw compute capability. In Fortnite, this translates to the ability to handle the game’s physics and particle effects, but the data suggests that the pixel processing pipeline is the bottleneck at higher resolutions. The 190 W TDP and the dual-slot cooler indicate that this is a performance-oriented card, and the measured results align with its position in the database, where it holds a percentile rank of 66 among all GPUs. The comparison to the NVIDIA GeForce RTX 4060, which has a deltaPct of -0.7 in the GPU benchmarks, confirms that the Arc B580 is a close competitor in raw compute, but the Fortnite-specific data shows that the driver and game optimizations play a significant role in the final frame rates.

Measured FPS Breakdown

The full dataset provides a clear picture of the system’s performance across all tested configurations. At 1920x1080, the Low preset delivers an average of 198.8 FPS, which is the highest result in the entire measurement set. The Medium preset follows at 139.1 FPS, then High at 108 FPS, and Ultra at 73.2 FPS. The scaling from Low to Ultra at 1080p shows a total performance loss of 63.2%, which is substantial but expected for a game like Fortnite with its scalable visual options.

Moving to 2560x1440, the results show a consistent step down. The Low preset averages 124 FPS, which is a 37.6% reduction from the 1080p Low result. Medium drops to 91.2 FPS (a 34.4% reduction from 1080p Medium), High falls to 68 FPS (a 37% reduction), and Ultra reaches 47.3 FPS (a 35.4% reduction from 1080p Ultra). The consistency of the percentage drops across presets at this resolution further confirms that the GPU is the limiting factor, as the CPU’s performance is not being taxed differently by the higher resolution.

At 3840x2160, the data shows the most severe impact. The Low preset averages 65.1 FPS, which is the only result above 60 FPS at this resolution. Medium drops to 50.2 FPS, High to 35.5 FPS, and Ultra to 25.5 FPS. The gap between Low and Ultra at 4K is 39.6 FPS, which is larger than the gap at 1440p (76.7 FPS difference between Low and Ultra) and at 1080p (125.6 FPS difference). This indicates that the most demanding visual features have a disproportionately larger impact on frame time at 4K, likely due to the increased pixel shader complexity and memory pressure.

How This Combo Ranks

In the database of tested combinations, this specific pairing of the Intel Core i5-10400F and Intel Arc B580 ranks 1198 out of 1564 combos for Fortnite. This places it in the lower 23.4% of all tested systems, which is a notable finding given the individual component specifications. The CPU, for instance, holds a percentile rank of 73 among all processors, while the GPU holds a percentile rank of 66 among all GPUs. The fact that the combo ranks lower than either component’s individual percentile suggests a potential performance mismatch or driver overhead issue specifically in Fortnite.

Looking at the CPU’s nearest rivals, the i5-10400F scores an average benchmark of 14168, which is very close to the AMD EPYC 7552 (14115, deltaPct 0.4) and the AMD Ryzen 3 7320C (14277, deltaPct -0.8). This indicates that the CPU is performing as expected for its class in synthetic tests. The GPU’s nearest rivals include the AMD Radeon 760M (22999, deltaPct 0.1) and the NVIDIA GeForce RTX 4060 (23181, deltaPct -0.7), showing that the Arc B580 is competitive in raw compute benchmarks.

However, the measured Fortnite results suggest that the combination is not punching above its weight. The 1080p Low result of 198.8 FPS is strong, but the 4K Ultra result of 25.5 FPS is quite low for a GPU with 12 GB of VRAM and a 456.0 GB/s memory bandwidth. The data implies that the Arc B580’s drivers may not be fully optimized for Fortnite’s engine, or that the game’s settings have a particularly heavy impact on Intel’s Xe2-HPG architecture. The rank of 1198 out of 1564 serves as a cautionary note: while the individual parts are capable, the combined software and hardware stack does not deliver the performance that the component percentiles alone might suggest.