Fortnite

Resolution Scaling

The measured Fortnite frame rates for the AMD Ryzen 5 3600 paired with the Intel Arc B580 reveal a clear progression as resolution increases. At 1920x1080 with Low settings, the combo produces an average of 199 FPS. Moving to 2560x1440 at the same settings drops that to 128.6 FPS, and at 3840x2160 the average falls to 65.8 FPS. This represents a 66.9% reduction from 1080p to 1440p, and a further 48.8% reduction from 1440p to 4K, which indicates that the graphics card is the primary scaling factor at these settings.

The High preset tells a similar story but with lower absolute numbers. At 1080p High, the average is 110.6 FPS. At 1440p High it drops to 67.1 FPS, a 39.3% decrease. At 4K High the average is 34.7 FPS, which is a 48.3% drop from 1440p. The Ultra preset follows the steepest curve: 72.8 FPS at 1080p, 45.9 FPS at 1440p, and 26.2 FPS at 4K. The gap between High and Ultra at 4K is notable — 34.7 FPS versus 26.2 FPS — which suggests that the Ultra preset imposes a significant additional load on the GPU.

The data indicates that at 1080p, the CPU has more headroom to feed the GPU, as evidenced by the large jump from 110.6 FPS (High) to 199 FPS (Low). At 4K, the gap between Low (65.8 FPS) and High (34.7 FPS) is much smaller proportionally, which points to the GPU becoming the limiting component as pixel count rises. The scaling from 1440p to 4K at Medium settings — 87.1 FPS down to 50 FPS, a 42.6% drop — reinforces the interpretation that the Intel Arc B580's rendering throughput, not the CPU's processing speed, dictates performance at higher resolutions.

CPU Role

The AMD Ryzen 5 3600 is a 6-core, 12-thread processor based on the Zen 2 architecture, running at a base clock of 3.60 GHz and a boost clock of 4.20 GHz. Its benchmark scores place it in the 76th percentile among all CPUs, with an average benchmark score of 18,129. In synthetic tests, it achieves 6,318 points in Cinebench R20 multi-core and 892 points in single-core, while Cinebench R23 yields 15,045 multi-core and 2,124 single-core. These figures demonstrate a balanced processor capable of handling modern game workloads.

In Fortnite, the CPU's role is most evident at lower resolutions where the GPU is less stressed. At 1080p Low, the 199 FPS average suggests that the CPU can maintain high frame delivery, but the data also shows that the GPU is still the bottleneck even here — the 3DMark Steel Nomad DX12 score of 3,068 for the Arc B580 indicates a mid-range graphics solution. The Ryzen 5 3600's single-thread performance, represented by a PassMark single-thread score of 2,562, is adequate for Fortnite's engine, which typically relies on a few heavily loaded threads.

Comparing to its nearest rivals, the Ryzen 5 3600 sits within 0.3% of the AMD Ryzen 5 1600 and the AMD EPYC 9274F, and 0.1% behind the Intel Core i5-11400. This tight clustering means that swapping to any of these CPUs would likely produce similar frame rates in Fortnite at the same settings. The 6-core/12-thread configuration provides enough parallelism for the game's background tasks, but the measured FPS scaling across resolutions shows that the Arc B580's 13.67 TFLOPS FP32 compute and 456.0 GB/s memory bandwidth are the decisive factors in this pairing.

FAQ

Q: What is the maximum average FPS achievable with this CPU and GPU combo in Fortnite?

A: The highest measured average FPS is 199 at 1920x1080 with Low settings. At 2560x1440 Low, the average drops to 128.6 FPS, and at 3840x2160 Low it falls to 65.8 FPS.

Q: How does the Ultra preset compare to High at the same resolution?

A: At 1080p, Ultra averages 72.8 FPS versus 110.6 FPS for High, a 34.2% reduction. At 1440p, Ultra averages 45.9 FPS versus 67.1 FPS for High, a 31.6% reduction. At 4K, Ultra averages 26.2 FPS versus 34.7 FPS for High, a 24.5% reduction.

Q: Is the CPU or GPU the limiting factor at 1080p Low?

A: The data suggests the GPU remains the primary limiter even at 1080p Low, given that the Arc B580's percentile rank is 66 among all GPUs, while the CPU's percentile rank is 76. The 199 FPS average is still well below what a higher-tier GPU could achieve with the same CPU.

Q: What is the performance gap between Medium and Low settings at 1440p?

A: At 2560x1440, Medium averages 87.1 FPS while Low averages 128.6 FPS. This represents a 32.3% difference, indicating that Medium settings impose a substantial additional render load on the Intel Arc B580.

Q: How does this combo rank compared to other tested configurations?

A: The combo ranks 1,195 out of 1,564 tested combinations in Fortnite. This places it in the lower third of all measured setups, reflecting a mid-range GPU paired with a mid-range CPU.

Q: Is the average FPS at 4K Ultra playable?

A: At 3840x2160 Ultra, the average FPS is 26.2. This is below the 30 FPS threshold typically considered minimally playable for a smooth experience, so users targeting 4K Ultra would need to lower settings to improve frame rates.

Settings Recommendations

Based on the measured rows, the optimal balance between visual quality and frame rate appears at 1920x1080 with High settings, yielding an average of 110.6 FPS. This is comfortably above the 60 FPS threshold and provides a substantial visual upgrade over Low settings, which average 199 FPS but sacrifice detail. The Medium preset at 1080p averages 138.6 FPS, which offers a 25.3% improvement over High, but the visual difference between Medium and High is often less pronounced than the frame rate gain suggests.

For users with 1440p displays, the High preset at 67.1 FPS is the practical choice if a stable 60 FPS experience is desired. The Medium preset at 87.1 FPS provides more headroom, but the step from Medium to High is only a 23% penalty in frame rate, which many players find acceptable for the added fidelity. At 4K, the data shows that even Low settings only reach 65.8 FPS, and Medium drops to 50 FPS. The Ultra preset at 26.2 FPS is not recommended for competitive play, while High at 34.7 FPS is marginal. For 4K users, Low or Medium is the sensible range, with Medium offering a better balance at 50 FPS.

The scaling pattern suggests that the Arc B580's 12 GB of GDDR6 memory is sufficient at all settings, but its raw compute power limits high-fidelity 4K performance. Users prioritizing frame rate over visuals should select Low at any resolution, while those seeking a middle ground should choose Medium at 1440p or 1080p, where the average FPS remains above 87.

How This Combo Ranks

In Fortnite, the AMD Ryzen 5 3600 with the Intel Arc B580 ranks 1,195 out of 1,564 tested combinations. This places the pairing in the 76th percentile of all combos, meaning that roughly 24% of tested configurations perform worse. The rank reflects a combination where the CPU sits at the 76th percentile among all CPUs and the GPU at the 66th percentile among all GPUs, so the overall result is dragged down by the graphics card's relatively lower standing.

The nearest GPU rival, the NVIDIA GeForce RTX 4060, has an average benchmark score of 23,181, which is 0.7% higher than the Arc B580's 23,021. This small delta suggests that the Arc B580 performs nearly identically to the RTX 4060 in synthetic benchmarks, yet the combo rank is still low due to the sheer number of other combinations tested. The AMD Radeon 760M scores 22,999, just 0.1% lower, while the NVIDIA P106-100 scores 22,950, 0.3% lower. These tight margins indicate that the Arc B580 is competitive with its immediate peers, but the 1,195 rank reflects that many other CPU-GPU pairings with stronger GPUs or newer CPUs achieve higher frame rates in Fortnite.

The CPU's nearest rivals are all within 0.3% of its average score, which means that the Ryzen 5 3600 is not a significant differentiator in this ranking. The Intel Core i5-11400 is 0.1% higher, while the AMD Ryzen 5 7535HS is 0.2% lower. The rank is therefore more attributable to the GPU's mid-tier position than to any CPU deficiency.

Measured FPS Breakdown

At 1920x1080, the measured averages are as follows: Low settings produce 199 FPS, Medium produces 138.6 FPS, High produces 110.6 FPS, and Ultra produces 72.8 FPS. The step from Low to Medium is a 30.4% reduction, from Medium to High a 20.2% reduction, and from High to Ultra a 34.2% reduction. The largest single drop occurs between High and Ultra, which is consistent with Ultra enabling additional post-processing effects.

At 2560x1440, the averages are 128.6 FPS for Low, 87.1 FPS for Medium, 67.1 FPS for High, and 45.9 FPS for Ultra. The relative penalties are 32.3% from Low to Medium, 23.0% from Medium to High, and 31.6% from High to Ultra. Compared to 1080p, the 1440p results show a greater absolute loss at every setting, with the Low preset dropping by 70.4 FPS, Medium by 51.5 FPS, High by 43.5 FPS, and Ultra by 26.9 FPS.

At 3840x2160, the averages are 65.8 FPS for Low, 50 FPS for Medium, 34.7 FPS for High, and 26.2 FPS for Ultra. The penalty from Low to Medium is 24.0%, from Medium to High is 30.6%, and from High to Ultra is 24.5%. The 4K results show that the GPU becomes the dominant constraint, as the absolute differences between settings shrink: the spread from Low to Ultra is 39.6 FPS at 4K, compared to 126.2 FPS at 1080p and 82.7 FPS at 1440p. This compression indicates that at 4K, the Arc B580 is operating near its limits even at Low settings, and the CPU's contribution to frame rate variability is minimal.