Fortnite

Fortnite on the AMD Ryzen 7 5700X3D and Intel Arc B370 combo presents a clear picture of a system where the integrated-class GPU is the dominant constraint. The CPU is a capable 8-core, 16-thread Zen 3 part with a large 96 MB L3 cache, but the Arc B370, with its 25 W TDP and system-shared memory, is not designed for high-refresh competitive play at higher resolutions. The measured data shows a playable experience only at 1080p with low settings, with everything else falling below the threshold for smooth gameplay. This analysis breaks down the measured FPS, scaling behavior, and what it means for a builder considering this combination.

Resolution Scaling

The FPS data reveals a steep, predictable drop as resolution increases, confirming that the Intel Arc B370 is the limiting factor in this pairing. At 1080p with Low settings, the combo averages 104 FPS. Moving to 1440p Low drops that to 66 FPS, a 36.5% reduction. At 4K Low, the average falls to 35 FPS, which is just a third of the 1080p Low result. This scaling pattern is consistent with a GPU that is running out of fillrate and memory bandwidth as pixel count rises.

The gap between Low and Ultra settings at each resolution further underscores the GPU bottleneck. At 1080p, Low yields 104 FPS, while Ultra yields only 37 FPS. At 1440p, Low gives 66 FPS, and Ultra drops to 24 FPS. At 4K, Low produces 35 FPS, while Ultra is essentially unplayable at 13 FPS. The scaling from Low to Ultra is roughly a 64-65% performance loss at every resolution, which indicates that the GPU's shading units, TMUs, and ROPs are saturated regardless of resolution. The CPU, with its 8 cores and 16 threads, is not the constraint here; if it were, we would see a smaller FPS gap between Low and Ultra at lower resolutions.

The 1080p Medium result provides another data point: 73 FPS average, with a minimum of 62 FPS and a maximum of 84 FPS. The spread between min and max is 22 FPS, suggesting some scene-to-scene variance, but the average is still well below the 104 FPS Low result. This indicates that even modest settings increases heavily tax the Arc B370. The 4K Medium result shows a 25 FPS average with a 21 FPS minimum and 28 FPS maximum, a narrow band that suggests the GPU is consistently pegged at its limit.

Looking at the data holistically, the resolution scaling tells a clear story: this combo is only viable for 1080p gaming, and even then, only at Low settings for a consistently smooth experience. The 1440p results, with a Low average of 66 FPS, might be acceptable for slower-paced games, but Fortnite's fast action and building mechanics would suffer. The 4K results are all below 35 FPS, which is firmly in slideshow territory for a competitive shooter. The GPU's system-shared memory and lack of dedicated VRAM likely contribute to this poor scaling, as the memory bandwidth is "System Dependent" and cannot keep up with the demands of higher resolutions.

FAQ

Q: What is the best resolution to play Fortnite with this CPU/GPU combo?

A: Based on the measured data, 1920x1080 is the only resolution that provides a playable experience. At 1080p Low, the combo averages 104 FPS, and at 1080p Medium, it averages 73 FPS. Moving to 2560x1440 drops the Low average to 66 FPS, and 3840x2160 Low falls to 35 FPS, both of which are too low for smooth competitive play.

Q: How does the Arc B370 compare to its nearest GPU rivals in raw benchmark scores?

A: The Arc B370 scores 1184 in the 3DMark Steel Nomad DX12 test. Its nearest rival, the ATI Mobility Radeon HD 5570, scores 1186, which is 0.2% higher. The ATI Radeon HD 5770 scores 1190 (0.5% higher), and the AMD Radeon HD 7650M scores 1192 (0.7% higher). The AMD FirePro M2000 scores 1168, which is 1.4% lower. These are all very old, low-end parts, highlighting the B370's entry-level positioning.

Q: Is the Ryzen 7 5700X3D strong enough for this game, or is the GPU the bottleneck?

A: The CPU is not the limiting factor. The Ryzen 7 5700X3D has 8 cores, 16 threads, and a 96 MB L3 cache, and it scores 22366 in Cinebench R23 multicore. Its average benchmark score of 24709 places it in the 77th percentile of all CPUs. The FPS scaling pattern, where performance drops by roughly a third when moving from 1080p to 1440p at the same settings, is classic GPU-bound behavior. The GPU's 5th percentile ranking versus all GPUs confirms it is the weak link.

Q: What FPS can I expect at 1440p with Medium settings?

A: The measured data shows an average of 46 FPS at 2560x1440 Medium, with a minimum of 39 FPS and a maximum of 53 FPS. This is below the 60 FPS target most players prefer for a battle royale, so you would need to drop to Low settings (66 FPS average) for a smoother experience, though even that is not ideal.

Q: Does the Arc B370 have enough VRAM for Fortnite?

A: The Arc B370 has no dedicated VRAM; its memory size is "System Shared," meaning it uses the system's main memory. The memory bus width and bandwidth are also listed as "System Shared" and "System Dependent," respectively. This means performance is heavily reliant on the system's DDR4 memory speed and capacity, which is a significant limitation for a game like Fortnite that benefits from fast, dedicated video memory.

Q: How does this combo rank among all tested combos for Fortnite?

A: This combo ranks 2517 out of 2740 tested combos for Fortnite. That places it in the bottom 8% of all tested systems. This is a direct reflection of the Arc B370's low performance, as the CPU is a solid mid-range part. The data shows that the GPU holds the whole system back.

Settings Recommendations

The measured FPS data provides a clear hierarchy of settings for this combo. At 1080p, Low is the only setting that delivers a consistently smooth experience, with a 104 FPS average. Medium drops to 73 FPS, which is still playable but with more noticeable frame dips (min 62 FPS). High yields 57 FPS, which is borderline for a fast-paced game, and Ultra falls to 37 FPS, which is too choppy for competitive play.

For players who prioritize frame rate above all else, 1080p Low is the clear choice. The 104 FPS average gives headroom for the game's busy moments, like building fights and large-scale battles. If you are willing to accept slightly lower FPS for better visuals, 1080p Medium at 73 FPS is the best compromise. The minimum of 62 FPS means you will stay above the 60 FPS threshold most of the time, though there will be occasional stutters. High at 57 FPS is not recommended, as the average dips below 60 and the minimum is not recorded, suggesting potential instability. Ultra is unplayable at 37 FPS.

At 1440p, the situation is more constrained. Low gives 66 FPS, which is playable but not ideal for competitive play. Medium drops to 46 FPS, and High falls to 36 FPS. Ultra is not viable at 24 FPS. For 1440p, we recommend Low settings if you must play at this resolution, but the 1080p experience is objectively better. At 4K, all settings are below 35 FPS, with Low at 35 FPS, Medium at 25 FPS, High at 19 FPS, and Ultra at 13 FPS. 4K is not a realistic option for this combo.

The data suggests that the best overall experience is 1080p Low for maximum frame rate, or 1080p Medium for a balance of visuals and performance. If you want to play at higher resolutions, you need a more powerful GPU. The Arc B370 simply does not have the rendering power to handle Fortnite at 1440p or 4K with acceptable frame rates.

How This Combo Ranks

The combo rank of 2517 out of 2740 tested combos places this system in the bottom 8.2% of all tested configurations for Fortnite. This is a poor result, and it is almost entirely attributable to the Intel Arc B370 GPU. The GPU's percentile rank against all GPUs is 5, meaning it performs better than only 5% of all tested graphics cards. Its 3DMark Steel Nomad score of 1184 is on par with GPUs from over a decade ago, as shown by its nearest rivals.

The CPU, by contrast, is a strong performer. The Ryzen 7 5700X3D has a percentile rank of 77 against all CPUs, and its average benchmark score of 24709 is nearly identical to the AMD Ryzen 5 7600X3D (24728, -0.1% delta) and the AMD Ryzen 9 5900HX (24822, -0.5% delta). It is slightly faster than the Intel Core i5-12450HX (24576, +0.5% delta) and the Intel Core i5-11600 (24563, +0.6% delta). This means the CPU is not holding the system back; it is a capable mid-range processor that would pair well with a much stronger GPU.

The ranking disparity between the CPU (77th percentile) and GPU (5th percentile) is stark. The system is essentially a high-end CPU paired with a low-end integrated GPU. In Fortnite, which is often CPU-intensive in its building mechanics, the CPU's 8 cores and 96 MB L3 cache help maintain solid minimum FPS, but the GPU's lack of dedicated memory and low compute power caps the overall performance. The 2517 rank out of 2740 reflects this imbalance, showing that this combo is far below the median for Fortnite performance. If you are building a system for this game, this GPU should be your first upgrade target.

GPU Role

The Intel Arc B370 is the defining component in this combo, and not in a good way. It is an integrated GPU (IGP) with a 25 W TDP, built on Intel's 3 nm process with the Xe3-LPG architecture. Its base clock is 300 MHz, and its boost clock is 2400 MHz. It has 1280 shading units, 40 TMUs, and 20 ROPs, with 10 ray tracing cores. Its peak FP32 performance is 6.144 TFLOPS, and its pixel rate is 48.00 GPixel/s.

The most critical limitation is its memory. The Arc B370 has no dedicated VRAM; its memory size is listed as "System Shared," and its memory type is "System Shared." The bus width is also "System Shared," and the bandwidth is "System Dependent." This means the GPU has to share the system's DDR4 memory bus with the CPU, which is a severe handicap for a game like Fortnite that relies on fast texture access and high frame rates. The system-shared memory architecture explains why the GPU performs so poorly at higher resolutions, where memory bandwidth demands increase dramatically.

In terms of raw benchmark performance, the Arc B370 scores 1184 in the 3DMark Steel Nomad DX12 test. This places it in the 5th percentile of all GPUs, meaning it is slower than 95% of tested graphics cards. Its nearest rivals are the ATI Mobility Radeon HD 5570 (1186, -0.2% delta), the ATI Radeon HD 5770 (1190, -0.5% delta), and the AMD Radeon HD 7650M (1192, -0.7% delta). These are all legacy parts from the early 2010s, which underscores how far behind the modern curve the Arc B370 is. The GPU's 6.144 TFLOPS FP32 compute is also quite low for modern standards.

The GPU's clock speeds are not the issue; the 2400 MHz boost is respectable. The problem is the combination of a low core count (1280 shading units) and the system-shared memory. At 1080p Low, the GPU manages 104 FPS, which shows it can do basic rendering at a modest resolution. But as soon as pixel count increases or settings are raised, the lack of dedicated memory bandwidth becomes a bottleneck. The measured FPS data confirms this: 1080p Ultra (37 FPS) is 64% slower than 1080p Low (104 FPS), and 4K Low (35 FPS) is 66% slower than 1080p Low. This is the behavior of a GPU that is starved for memory bandwidth, not one that is compute-limited.

Measured FPS Breakdown

The measured FPS data provides a complete picture of this combo's performance across three resolutions and four settings presets. At 1920x1080, the results are as follows: Low averages 104 FPS, Medium averages 73 FPS with a minimum of 62 and a maximum of 84, High averages 57 FPS, and Ultra averages 37 FPS. This is the only resolution where the combo achieves playable frame rates, and only at Low and Medium settings.

At 2560x1440, the results drop significantly. Low averages 66 FPS, Medium averages 46 FPS with a minimum of 39 and a maximum of 53, High averages 36 FPS, and Ultra averages 24 FPS. The 66 FPS at Low is the only 1440p result that approaches playability, and it is still below the 75 Hz refresh rate that many 1440p monitors use. The Medium preset's minimum of 39 FPS indicates noticeable stuttering in intense scenes.

At 3840x2160, the results are uniformly poor. Low averages 35 FPS, Medium averages 25 FPS with a minimum of 21 and a maximum of 28, High averages 19 FPS, and Ultra averages 13 FPS. None of these are playable for a competitive game. The 4K Medium result's narrow range (21-28 FPS) suggests the GPU is completely saturated and cannot respond to changes in scene complexity.

The pattern across all resolutions is consistent: Low is the fastest preset, followed by Medium, then High, then Ultra. The performance gap between Low and Ultra is substantial at every resolution, ranging from 64% at 1080p to 63% at 1440p and 4K. The Medium presets show the only recorded minimum and maximum FPS values, with the 1080p Medium result (62-84 FPS) being the most stable of the three Medium presets. The 1440p Medium (39-53 FPS) and 4K Medium (21-28 FPS) results both show tight bands, indicating the GPU is consistently at its limit.

For a builder, the takeaway is that this combo should be configured for 1080p Low or Medium. The 104 FPS average at Low provides a smooth experience, while the 73 FPS average at Medium is acceptable if you prefer better visuals. Any resolution above 1080p, or settings above Medium, will result in frame rates that are too low for Fortnite's fast-paced gameplay. The data is clear: the Arc B370 is the bottleneck, and the Ryzen 7 5700X3D is more than capable of handling this game's CPU demands.