Fortnite

Fortnite with the AMD Ryzen 5 4600G and Intel Arc B580 presents a dataset that is unusually clear in its narrative: this pairing is firmly constrained by the graphics card at high resolution, but the CPU begins to show its limits as resolution drops. The measured frames per second across the three tested resolutions and four settings tiers tell a consistent story about where the bottleneck resides, and the specific numbers in the FACT PACK allow for a precise breakdown of that relationship. This analysis walks through the resolution scaling, the individual roles of the GPU and CPU, the optimal settings per the data, and the combo's overall standing in the benchmark database.

Resolution Scaling

The most striking pattern in the measured FPS is the dramatic drop that occurs when moving from 1440p to 4K, which clearly identifies the Intel Arc B580 as the primary limiting component at higher resolutions. At Low settings, the average frame rate falls from 127 FPS at 2560x1440 to 67 FPS at 3840x2160, a reduction of 60 FPS or roughly 47 percent. This is a severe scaling penalty that is characteristic of a GPU that is overwhelmed by pixel count, not a CPU limitation. The same trend is visible across all settings, though the relative drop is less steep at higher quality presets because the GPU is already heavily loaded. For instance, at High settings, the drop from 1440p (69 FPS) to 4K (37 FPS) is 32 FPS, or about 46 percent, which is nearly identical in percentage terms to the Low setting drop.

This behavior indicates that the 12 GB of GDDR6 memory and the 456.0 GB/s bandwidth on the Arc B580 are sufficient to feed the GPU at 1440p, but the sheer number of pixels at 4K pushes the rendering pipeline past its sustainable throughput. The data shows that at 4K, even the Low preset only manages 67 FPS, which is below the 72 FPS achieved at 1080p Ultra. This is a definitive sign that the GPU is the ceiling at 3840x2160, as no amount of CPU headroom can compensate for the fill-rate and shading demands of 4K. The 1080p to 1440p scaling is more moderate: at Low settings, the average goes from 200 FPS at 1080p to 127 FPS at 1440p, a 36.5 percent reduction. This still indicates a GPU-bound scenario, but the CPU’s role becomes more apparent as the resolution drops further.

When moving from 1440p to 1080p at Low settings, the average FPS jumps from 127 to 200, a 57 percent increase. This disproportionate gain suggests that the CPU, with its 6 cores and 12 threads based on Zen 2 architecture, is beginning to assert itself as a secondary constraint. The Ryzen 5 4600G has a boost clock of 4.20 GHz, which is respectable, but the data implies that at 1080p Low, the frame rate is approaching the point where the processor’s single-thread performance and memory bandwidth (51.2 GB/s dual-channel DDR4) start to limit the number of draw calls that can be processed per second. The fact that 1080p Low hits 200 FPS exactly, while 1080p Medium reaches 141 FPS and 1080p High drops to 109 FPS, further confirms that the GPU load is decreasing, allowing the CPU to become more influential in the final frame rate.

GPU Role

The Intel Arc B580, built on the Xe2-HPG architecture with a 5 nm process, is the dominant factor in this pairing’s performance at 4K. Its 2560 shading units and 80 ROPs are tasked with rendering Fortnite’s stylized graphics, and the data shows that the card is capable of solid 1440p performance but struggles with 4K. At 2560x1440 Medium, the average FPS is 89, with a minimum of 76 and a maximum of 103, indicating a playable experience with some variance. The GPU’s 12 GB VRAM and 192-bit bus width provide 456.0 GB/s of bandwidth, which is ample for Fortnite’s textures at this resolution, and the measured results support that there is no memory capacity issue causing stutter or frame drops, as the minimum FPS at 1440p Medium is still a respectable 76.

At 4K, the GPU’s limitations are laid bare. The jump from Medium (47 FPS) to High (37 FPS) to Ultra (24 FPS) at 3840x2160 shows a steep degradation, with the Ultra preset delivering a nearly unplayable 24 FPS average. This is a clear indication that the Arc B580’s raw compute throughput, measured at 13.67 TFLOPS FP32, is insufficient for 4K Ultra in Fortnite. The card’s boost clock is listed at 2670 MHz, which is high, but the pixel rate of 213.6 GPixel/s is the limiting factor at this resolution. The data suggests that the GPU is working at its maximum capacity at 4K, and the only way to achieve a higher frame rate is to reduce the settings, as evidenced by the 67 FPS at 4K Low.

Comparing the GPU to its nearest rivals in the benchmark database provides context for its performance. The Arc B580 has an average benchmark score of 23021, which places it just 0.6 percent ahead of the NVIDIA GeForce RTX 2080 (score 22895) and 0.7 percent behind the NVIDIA GeForce RTX 3080 (score 23172). This indicates that the B580 is a capable mid-to-high-range card that sits between two well-known NVIDIA offerings. In Fortnite specifically, the measured FPS at 1440p High (69 FPS) is consistent with a GPU that is roughly on par with an RTX 2080, which is expected given the benchmark scores. The GPU’s percentile rank of 68 versus all GPUs further confirms its position as a solid performer, but not a top-tier one, which is why 4K Ultra is out of reach.

CPU Role

The AMD Ryzen 5 4600G, with its 6 cores and 12 threads, is a capable processor for gaming, but the data in this Fortnite test shows that it is not the primary bottleneck until the resolution drops to 1080p with lower settings. The CPU’s boost clock of 4.20 GHz and base clock of 3.70 GHz are reasonable for its Zen 2 architecture, and its 8 MB of shared L3 cache is sufficient for most game workloads. In this test, the CPU’s influence is most visible in the 1080p Low result of 200 FPS, which is a hard ceiling that is likely imposed by the processor’s ability to feed the GPU with draw calls. The fact that 1080p Medium is 141 FPS and 1080p High is 109 FPS shows that as the GPU load increases, the CPU has more headroom, but at Low settings, the CPU is clearly the limiting factor.

The CPU’s benchmark scores support this interpretation. In Cinebench R23, the 4600G scores 13593 points in multi-core and 1919 points in single-core, which are solid numbers for a 6-core part. Its percentile rank of 71 versus all CPUs indicates it is in the upper third of processors, but it is not a high-end gaming chip. The nearest rivals, such as the AMD Ryzen 3 PRO 5355GE (avg score 17482, delta 0.1 percent) and the Intel Core i3-14100T (avg score 17648, delta -0.8 percent), show that the 4600G is in the same performance tier as these parts. This means that the CPU is adequate for 60-100 FPS gaming at higher resolutions, but it will struggle to maintain very high frame rates above 200 FPS in esports titles like Fortnite.

The 1080p results illustrate this perfectly. At 1080p High, the average is 109 FPS, which is a good result that shows the CPU is not holding back the GPU significantly. However, the jump to 200 FPS at 1080p Low suggests that the CPU is hitting its limit around that mark. The 4000 series processor, with its 7 nm process and 65 W TDP, is designed for efficiency, but it does not have the raw single-thread performance to push frame rates much beyond 200 FPS in Fortnite. The measured 127 FPS at 1440p Low further confirms this, as the GPU is still doing most of the work, but the CPU’s contribution is starting to wane. In summary, the CPU is a reliable partner for this GPU at 1440p and 4K, but it becomes the secondary bottleneck at 1080p Low.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this combo depend heavily on the user’s target resolution and refresh rate. For 4K gaming, the data is clear that High settings are not viable, with an average of 37 FPS. Medium settings at 4K provide 47 FPS, which is playable but not smooth. Low settings at 4K give 67 FPS, which is the best option for a playable experience, but it still falls short of the 60 FPS target for many users. The Ultra preset at 4K is a non-starter at 24 FPS. Therefore, for 4K, the recommendation is to use Low settings to achieve a playable frame rate, or to avoid 4K altogether.

At 1440p, the data shows a better balance. High settings yield 69 FPS, which is playable for most single-player experiences but may not be ideal for competitive play. Medium settings at 1440p provide 89 FPS, with a minimum of 76 FPS, which is a smooth and consistent experience that most users would find acceptable. Low settings at 1440p push the frame rate to 127 FPS, which is excellent for competitive gaming. Ultra at 1440p drops to 46 FPS, which is not recommended. The best experience at 1440p is Medium settings, as it offers a good balance between visual quality and frame rate, staying well above the 60 FPS threshold.

For 1080p, the data reveals the full potential of this combo. Low settings achieve 200 FPS, which is ideal for high-refresh-rate monitors and competitive play. Medium settings provide 141 FPS, which is still very smooth and offers better visuals. High settings at 1080p give 109 FPS, which is a good compromise for those who want better image quality without sacrificing too much frame rate. Ultra at 1080p is 72 FPS, which is playable but not optimal. The recommendation for 1080p is to use Medium settings for a balance of quality and speed, or Low settings for maximum frame rate. High settings are also viable if the user prefers visuals over raw speed.

How This Combo Ranks

In the overall benchmark database, this specific combination of the AMD Ryzen 5 4600G and Intel Arc B580 ranks at position 2779 out of 3700 tested combos for Fortnite. This places it in the 75th percentile of all combinations, meaning it outperforms about three-quarters of the tested systems. This is a solid ranking, but it is not exceptional, reflecting the fact that the CPU is a mid-range part and the GPU is a capable but not top-tier card. The rank of 2779 indicates that there are many faster combos, but also a significant number of slower ones.

The ranking is consistent with the components’ individual percentiles. The CPU has a percentile rank of 71 versus all CPUs, and the GPU has a percentile rank of 68 versus all GPUs. When combined, these two parts produce a system that is slightly above average in the grand scheme of things, but its Fortnite-specific performance is limited by the GPU at higher resolutions. The combo’s rank of 2779 out of 3700 suggests that while it can handle Fortnite at 1080p and 1440p well, it is not in the top tier of systems that can max out the game at 4K. The data shows that this is a balanced pairing, but the CPU’s relative weakness at very high frame rates and the GPU’s weakness at 4K Ultra combine to keep it in the middle of the pack.

For a user with a 1080p monitor, this combo would feel very strong, with 200 FPS on Low and 141 FPS on Medium. For a 1440p user, it is still very capable, with 89 FPS on Medium. For a 4K user, it is a compromise, with only 67 FPS on Low. The ranking of 2779 out of 3700 accurately reflects this mixed bag of capabilities. It is not a high-end combo, but it is far from a low-end one, and it delivers a consistently playable experience at mainstream resolutions.

FAQ

Q: What is the best resolution for this CPU and GPU combo in Fortnite?

A: The data shows that 2560x1440 is the sweet spot, with Medium settings achieving 89 FPS average and Low settings reaching 127 FPS. At 1080p, the combo can hit 200 FPS on Low, but 1440p offers a better balance of visual quality and performance.

Q: Can this combo run Fortnite at 4K?

A: Yes, but only at lower settings. At 4K Low, the average FPS is 67, which is playable. At 4K Medium, it drops to 47 FPS, and at 4K High, it falls to 37 FPS. 4K Ultra is not viable at 24 FPS.

Q: How does the Intel Arc B580 perform relative to its closest rivals?

A: The Arc B580 has an average benchmark score of 23021, which is 0.6 percent higher than the NVIDIA GeForce RTX 2080 (22895) and 0.7 percent lower than the NVIDIA GeForce RTX 3080 (23172). This places it between these two cards in raw compute power.

Q: Is the AMD Ryzen 5 4600G a bottleneck for the Intel Arc B580 in Fortnite?

A: The CPU is not the primary bottleneck at 1440p and 4K, where the GPU is clearly the limiting factor. However, at 1080p Low, the CPU’s performance ceiling is reached at 200 FPS, indicating it becomes a secondary constraint at very high frame rates.

Q: What is the frame rate difference between Medium and High settings at 1440p?

A: At 2560x1440, Medium settings produce an average of 89 FPS, with a minimum of 76 and a maximum of 103. High settings produce an average of 69 FPS. The difference is 20 FPS, making Medium the better choice for smoother gameplay.

Q: How does this combo rank compared to all other tested combos in Fortnite?

A: This combo ranks 2779 out of 3700 tested combinations. This places it in the 75th percentile, meaning it performs better than about 75 percent of all tested systems, but it is not near the top.

Measured FPS Breakdown

The following table presents the exact measured average FPS for each resolution and settings combination, as provided in the FACT PACK. For the Medium settings, the minimum and maximum FPS are also included to show the frame time variance.

| Resolution | Settings | Average FPS | Minimum FPS | Maximum FPS |

|------------|----------|-------------|-------------|-------------|

| 3840x2160 (4K) | High | 37 | - | - |

| 3840x2160 (4K) | Low | 67 | - | - |

| 3840x2160 (4K) | Medium | 47 | 40 | 54 |

| 3840x2160 (4K) | Ultra | 24 | - | - |

| 2560x1440 (1440p) | High | 69 | - | - |

| 2560x1440 (1440p) | Low | 127 | - | - |

| 2560x1440 (1440p) | Medium | 89 | 76 | 103 |

| 2560x1440 (1440p) | Ultra | 46 | - | - |

| 1920x1080 (1080p) | High | 109 | - | - |

| 1920x1080 (1080p) | Low | 200 | - | - |

| 1920x1080 (1080p) | Medium | 141 | 120 | 162 |

| 1920x1080 (1080p) | Ultra | 72 | - | - |

This data shows a clear hierarchy: 1080p Low is the fastest configuration at 200 FPS, while 4K Ultra is the slowest at 24 FPS. The Medium settings consistently provide a stable frame rate, with the minimum FPS not dropping below 40 at 4K and 76 at 1440p, which is a positive sign for consistent performance. The lack of minimum and maximum data for the other settings indicates that only the Medium preset was tested for frame time variance, but the average FPS values are sufficient to draw the conclusions above. The overall trend is that this combo is best utilized at 1080p or 1440p with Medium or Low settings, and users should avoid 4K Ultra and High presets if they desire a smooth experience.