Fortnite

The AMD Ryzen 7 5800XT paired with the Intel Arc B370 presents a stark study in bottlenecking within Fortnite. The data shows a combination where the processor’s substantial compute capabilities are almost entirely neutralized by the integrated graphics solution, resulting in frame rates that are playable only at the most modest settings.

Resolution Scaling

The measured FPS data reveals a precipitous drop in performance as resolution increases, clearly indicting the graphics subsystem as the primary limiting factor. At 1920x1080 with Low settings, the combo achieves an average of 104 FPS. Scaling up to 2560x1440 at the same Low preset, the average falls to 66 FPS, a reduction of 38 FPS. Moving to 3840x2160 at Low, the average plummets to 35 FPS. This trajectory demonstrates a near-linear relationship between pixel count and frame rate, which is characteristic of a GPU-bound scenario.

The pattern holds across all settings presets. At High settings, the average FPS drops from 57 at 1080p to 36 at 1440p, and finally to 19 at 4K. The Ultra preset, which is the most demanding, shows the most severe scaling, starting at 37 FPS at 1080p, falling to 24 FPS at 1440p, and bottoming out at 13 FPS at 4K. The delta between 1080p and 4K at Ultra is 24 FPS, a 65% reduction from the baseline.

The data strongly suggests that the CPU is not the constraint in this pairing. If the Ryzen 7 5800XT were the bottleneck, we would expect to see frame rates that plateau or remain relatively consistent across different resolutions, as the CPU load would be similar. Instead, the continuous and significant FPS decline with each resolution increase points directly to the Intel Arc B370’s limited fillrate and shading capabilities being overwhelmed by the increasing number of pixels.

The fact that the 4K Medium preset yields an average of 25 FPS with a minimum of 21 FPS and a maximum of 28 FPS shows a tight band, indicating the GPU is saturated and frame times are consistent. In contrast, the 1080p Low preset’s 104 FPS average is the only data point that approaches a comfortable level, but even that is far from high-refresh-rate territory. The scaling pattern is unambiguous: this is a combination designed for low-resolution, low-detail gaming.

GPU Role

The Intel Arc B370 is an integrated graphics processor (IGP) with a base clock of 300 MHz and a boost clock of 2400 MHz. It features 1280 shading units, 40 texture mapping units, and 20 raster output units. Its performance, as measured by a single 3DMark Steel Nomad DX12 test, is a score of 1184, placing it in the 5th percentile of all GPUs. This is a very low score, and the nearest rivals in the database are legacy parts like the ATI Mobility Radeon HD 5570 (scoring 1186, a delta of -0.2%) and the AMD Radeon HD 7650M (scoring 1192, a delta of -0.7%). The Arc B370 is essentially performing at the level of a decade-old discrete mobile GPU.

The GPU’s memory is "System Shared," meaning it has no dedicated VRAM. Its bandwidth is listed as "System Dependent," which in practice means it shares the system’s memory bus, a configuration that is typically a significant performance handicap. The memory clock is also "System Shared," further confirming that the GPU is reliant on the main system RAM for all data storage. This architectural choice is a major reason for the low frame rates observed in Fortnite.

The boost clock of 2400 MHz is respectable for an IGP, but the sheer number of execution units is too low to handle the demands of a modern battle royale at higher resolutions. The pixel rate is 48.00 GPixel/s and the texture rate is 96.00 GTexel/s. These are modest figures that align with the low 3DMark score. The data indicates that the GPU’s role in this combo is to be the absolute bottleneck, and its performance is the sole determinant of the final frame rate in Fortnite. The 3DMark Steel Nomad score of 1184 is a clear predictor of the sub-30 FPS averages seen at 4K and the sub-60 FPS averages at 1440p for most settings.

How This Combo Ranks

In the database of tested combinations, this pairing of the AMD Ryzen 7 5800XT and Intel Arc B370 ranks 2517 out of 2740 combos for Fortnite. This places it in the bottom 8% of all tested systems, a ranking that reflects the profound mismatch between the CPU’s headroom and the GPU’s output. The combo rank is a direct consequence of the Arc B370’s performance percentile, which is only 5, meaning it is slower than 95% of all other GPUs in the database.

The CPU itself is not the issue. The Ryzen 7 5800XT has an average benchmark score of 29879 and an 81st percentile ranking among all CPUs. Its nearest rivals include the AMD Ryzen 7 7840H (29868, 0% delta) and the AMD Ryzen 5 9600X (29713, 0.6% delta), indicating it is a solid mid-range performer. However, this CPU strength is irrelevant when paired with a GPU that performs at the level of the ATI Radeon HD 5770 (scoring 1190, a delta of -0.5%).

The data shows a clear hierarchy. The combo’s rank is pulled down entirely by the GPU. If the system were paired with a more capable graphics card, the CPU’s high percentile would allow the combo to rank much higher. As it stands, the 2517th rank out of 2740 combos is a definitive statement that this system is not intended for gaming at playable frame rates beyond 1080p with low settings. The data suggests that for Fortnite, this specific combination is one of the least effective in the entire database, with only 223 other combinations performing worse.

Settings Recommendations

Based on the measured FPS rows, the only setting that provides a consistently playable experience is 1920x1080 with the Low preset, which yields an average of 104 FPS. This is the sole configuration that breaks the 60 FPS barrier, and it is the clear recommendation for any user seeking a smooth experience. The 1080p Medium preset drops to 73 FPS, which is still technically playable but with a noticeable reduction in smoothness. The 1080p High preset falls to 57 FPS, which is borderline and will be subject to noticeable stuttering in busy scenes.

For users who prioritize visual fidelity, the 2560x1440 Low preset, with an average of 66 FPS, is the only viable option at that resolution. All other settings at 1440p result in averages below 50 FPS, with Ultra dipping to 24 FPS. The 4K resolution is not recommended for any setting, as even the Low preset only manages an average of 35 FPS, and the Ultra preset is a slideshow at 13 FPS.

The data implies a strict trade-off. To play at a reasonable frame rate, the user must accept the lowest visual quality. The Medium preset at 1080p offers a 73 FPS average, which is a 31 FPS drop from Low, a significant cost for a modest visual upgrade. The High preset, with a 57 FPS average, represents a further 16 FPS drop. The Ultra preset should be avoided entirely, as its 37 FPS average at 1080p is worse than the Low preset at 1440p. The optimal experience, per the measured data, is to run Fortnite at 1920x1080 with the Low preset, accepting the minimal graphics settings to achieve a fluid 104 FPS average.

FAQ

Q: Can this CPU and GPU combo run Fortnite at 4K resolution?

A: Yes, but the performance is poor. The data shows an average of 35 FPS at 4K with Low settings, 25 FPS at Medium, 19 FPS at High, and 13 FPS at Ultra. These frame rates are not competitive for a battle royale game.

Q: What is the best resolution and settings combination for this system?

A: The measured data shows that 1920x1080 with the Low settings preset provides the highest average frame rate of 104 FPS. This is the only combination that offers a frame rate well above the 60 FPS standard for smooth gameplay.

Q: Is the AMD Ryzen 7 5800XT processor the reason for the low frame rates?

A: No. The processor has an 81st percentile ranking among all CPUs, with a strong average benchmark score of 29879. The performance issues are entirely attributable to the Intel Arc B370 integrated GPU, which ranks in the 5th percentile for graphics cards.

Q: How does the Intel Arc B370 compare to its nearest rivals in terms of raw score?

A: The Arc B370’s 3DMark Steel Nomad score is 1184. Its closest competitor, the ATI Mobility Radeon HD 5570, scores 1186, a delta of -0.2%. The AMD Radeon HD 7650M scores 1192, a delta of -0.7%, meaning the Arc B370 is slightly slower than both.

Q: What is the average frame rate difference between Low and Ultra settings at 1440p?

A: At 2560x1440, the Low preset achieves an average of 66 FPS, while the Ultra preset achieves an average of 24 FPS. This is a difference of 42 FPS, representing a 64% performance drop when switching to the highest quality settings.

Q: Is the frame rate consistent at 4K Medium settings?

A: The data shows an average of 25 FPS, with a minimum of 21 FPS and a maximum of 28 FPS. This narrow range of 7 FPS indicates that the system is consistently GPU-limited and frame times are relatively stable, though the overall performance is very low.

CPU Role

The AMD Ryzen 7 5800XT is a desktop processor based on the Zen 3 architecture (codenamed Vermeer), featuring 8 cores and 16 threads. It has a base clock of 3.80 GHz and a boost clock of 4.80 GHz. Its compute potential is demonstrated by a Cinebench R23 multicore score of 23794 and a single-core score of 3359. These are strong numbers, and the processor’s 81st percentile ranking confirms that it is a capable part. The CPU’s role in this Fortnite pairing, however, is purely ancillary; it has more than enough headroom to feed the Intel Arc B370, but the GPU cannot utilize it.

The data shows that the CPU is never the limiting factor. At 1080p Low, where the CPU load is typically highest, the combo achieves 104 FPS. If the CPU were the bottleneck, we would expect this number to be similar to the 1440p and 4K results. Instead, the FPS falls to 66 and then 35 as resolution increases, proving that the GPU is the sole constraint. The CPU’s 16 threads are largely idle, waiting for the GPU to process frames.

The processor’s specifications, such as its 32 MB of shared L3 cache and support for DDR4 memory, are irrelevant to the final outcome here. The integrated graphics solution is so weak that it negates any potential CPU advantage. The nearest CPU rivals, such as the AMD Ryzen 7 7840H with a 0% delta in average score, would perform identically in this setup because they would all be equally held back by the Arc B370. In essence, the Ryzen 7 5800XT is a high-performance engine connected to a severely restricted exhaust, and its role is reduced to idling while the graphics component struggles to keep up. The 3DMark 16-thread score of 7683 and the max-thread score of 7680 are testament to the CPU’s capability, but they do not translate into gaming performance when paired with a GPU that has a 5th percentile benchmark score.