Fortnite

The AMD Ryzen 5 8400F paired with the NVIDIA GeForce RTX 4080 delivers a formidable Fortnite experience, with performance scaling predictably as resolution increases. The data indicates a system that is heavily GPU-limited at 4K but transitions to a more balanced or CPU-limited state at 1080p, showcasing the strengths and bottlenecks of each component within this specific benchmark set.

Resolution Scaling

The measured FPS data reveals a classic pattern of resolution-dependent scaling. At 1080p with Low settings, the combo achieves an average of 432 FPS, a figure that drops to 236 FPS at High settings and 156 FPS at Ultra. This wide spread at the lowest resolution suggests the CPU is capable of feeding frames at an exceptional rate, but the graphics workload still dictates the final output. The jump from Low to Medium at 1080p results in a decrease from 432 to 304 FPS, while the jump from High to Ultra reduces the average from 236 to 156 FPS, indicating that the GPU's shading and rasterization work becomes more demanding as quality presets increase.

Moving to 1440p, the scaling becomes more pronounced. Low settings yield 275 FPS, which is 157 FPS lower than the 1080p Low result. High settings at 1440p produce 150 FPS, and Ultra drops to 99 FPS. This resolution increase places a significantly heavier load on the GPU, as the pixel count rises from 2.07 million to 3.69 million. The RTX 4080’s 16 GB of GDDR6X memory and 716.8 GB/s of bandwidth are sufficient to handle the increased memory pressure, but the raw compute demand begins to throttle the frame rate.

At 4K (3840x2160), the performance curve flattens considerably. The Low preset still manages 145 FPS, but High falls to 79 FPS, and Ultra drops to just 52 FPS. The scaling from 1440p to 4K is brutal, as the pixel count doubles again. The data suggests that at 4K, the RTX 4080 is the primary limiting factor; the CPU’s role diminishes as the GPU struggles to maintain high frame rates. The delta between Low and Ultra at 4K is 93 FPS, compared to 176 FPS at 1440p and 276 FPS at 1080p, demonstrating that the GPU’s headroom is exhausted at the highest resolution, compressing the performance envelope.

How This Combo Ranks

In the broader context of all tested hardware combinations, this specific pairing of the Ryzen 5 8400F and RTX 4080 holds a strong position. The data places this combo at rank 231 out of 3700 tested configurations for Fortnite, placing it in the top 6.2% of all systems. This percentile placement indicates that the combination is well above average for achieving high frame rates in this title, though it is not at the absolute pinnacle of performance. The ranking suggests that while the RTX 4080 is a top-tier GPU, the Ryzen 5 8400F’s mid-range positioning prevents the combo from reaching the very top echelon, where more powerful CPUs might unlock even higher 1080p frame rates.

The combo’s ranking is a product of both components. The GPU’s percentile versus all GPUs is 86, and the CPU’s percentile versus all CPUs is 77. While both are above average, the GPU is comparatively stronger than the CPU in the overall hardware landscape. This imbalance is reflected in the game-specific ranking, where the system’s performance is likely constrained by the CPU in lower-resolution scenarios, preventing it from climbing higher. The system is not a top-100 performer, but it sits comfortably in the upper quartile, making it an exceptionally capable machine for competitive play and high-refresh-rate monitors.

GPU Role

The NVIDIA GeForce RTX 4080 serves as the primary graphics processor, built on the Ada Lovelace architecture with a 5 nm process. Its specifications include a boost clock of 2505 MHz and a base clock of 2205 MHz. The GPU is equipped with 16 GB of GDDR6X memory on a 256-bit bus, yielding a memory bandwidth of 716.8 GB/s. This substantial memory allocation is a key factor in the 4K performance, as the game can cache more textures and assets, preventing stutter. The GPU’s 9728 shading units and 76 RT cores contribute to its raw compute power, which is measured at 48.74 TFLOPS for FP32 operations.

In Fortnite, the GPU’s role becomes increasingly dominant as resolution and settings increase. At 4K Ultra, the GPU is clearly the bottleneck, with the average FPS dropping to 52. The GPU’s memory clock runs at 1400 MHz, with an effective data rate of 22.4 Gbps, which supports the high bandwidth necessary for 4K textures. The data shows that at 1080p Low, the GPU is not fully utilized, as the system achieves 432 FPS, but this is likely constrained by the CPU’s frame generation limit. The benchmark results for the GPU show an average score of 54247, placing it in the 86th percentile. Its nearest rival, the RTX 4080 SUPER, scores 54209, a negligible 0.1% difference, indicating the 4080 is performing at the expected level for its class. The GPU’s PassMark G3D score of 34457 further confirms its high-end status.

Measured FPS Breakdown

The measured FPS data provides a comprehensive look at the system’s capabilities across three resolutions and four quality presets. At 1080p, the system delivers exceptional performance. Low settings produce an average of 432 FPS. Medium settings reduce this to 304 FPS, with a minimum of 259 and a maximum of 350 FPS. High settings yield 236 FPS, and Ultra settings drop to 156 FPS. These figures indicate that the system is more than capable of driving a 240Hz or even 360Hz monitor at 1080p, especially on lower presets, which are common in competitive play to maximize frame rates and reduce input lag.

At 1440p, the performance remains very strong but begins to show the GPU’s workload. Low settings average 275 FPS, which is still exceptionally high. Medium settings produce 194 FPS, with a minimum of 165 and a maximum of 223 FPS. High settings average 150 FPS, and Ultra settings drop to 99 FPS. This resolution is the sweet spot for the RTX 4080, as it can still push high refresh rates on High settings, and even Ultra remains playable above 90 FPS. The min FPS of 165 on Medium indicates good frame pacing, with no severe dips below the refresh rate of standard 165Hz monitors.

At 4K, the system’s performance drops significantly. Low settings average 145 FPS, which is still very playable. Medium settings average 102 FPS, with a minimum of 87 and a maximum of 118 FPS, providing a smooth experience on high-refresh-rate 4K displays. High settings average 79 FPS, which is borderline for a smooth experience on a 60Hz display but acceptable on a 120Hz display with VRR. Ultra settings average 52 FPS, which is the only preset that falls below the 60 FPS threshold, making it less ideal for fast-paced competitive play but still viable for cinematic single-player experiences. The data shows a clear hierarchy: 1080p is CPU-bound, 4K is GPU-bound, and 1440p is a balanced middle ground.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture, specifically the Phoenix codename, manufactured on TSMC’s 4 nm process. Its base clock is 4.20 GHz, and it boosts up to 4.70 GHz. The CPU has a 16 MB shared L3 cache and supports DDR5 memory on the AM5 socket. Its benchmark scores are solid for a mid-range part; for instance, it scores 20851 in Cinebench R23 multi-core and 2943 in single-core. Its average benchmark score is 25005, placing it in the 77th percentile, with its nearest rival being the AMD Ryzen 5 7500F, which scores 24964, a mere 0.2% difference.

In Fortnite, the CPU’s role is most apparent at 1080p. The system achieves 432 FPS on Low settings, which confirms the CPU’s strong single-thread performance and the game’s engine efficiency. However, the fact that the FPS does not scale linearly with resolution at 1080p suggests that the CPU is hitting its limits. For instance, dropping from Medium to Low only yields a 128 FPS increase, while the jump from High to Ultra yields an 80 FPS decrease, indicating that the GPU is still contributing heavily to the frame time. The CPU’s 6 cores and 12 threads are sufficient for Fortnite’s main game thread, but they are not so powerful as to remove the GPU bottleneck entirely at lower resolutions.

The CPU’s performance in synthetic benchmarks, such as the PassMark multi-thread score of 24389, suggests it has enough headroom for modern titles. However, in Fortnite, the data implies that the CPU is the limiting factor for achieving the absolute highest frame rates at 1080p. The combo rank of 231 out of 3700 suggests that while this CPU is good, pairing it with a higher-end part like the RTX 4080 does not unlock its full potential in this specific game. The CPU’s 65W TDP and 4.70 GHz boost clock do provide a strong foundation, but the system’s performance at 4K is entirely dictated by the GPU, showing that the CPU’s role diminishes as the resolution increases.

FAQ

Q: What is the highest average FPS this combo achieves in Fortnite?

A: The highest average FPS is 432, achieved at 1920x1080 resolution with Low settings.

Q: Is this system capable of 4K gaming at high refresh rates?

A: At 4K with Medium settings, the system averages 102 FPS, and at High settings, it averages 79 FPS, making it suitable for 120Hz displays with VRR, though not for 144Hz.

Q: How does the CPU's performance compare to its closest rival?

A: The AMD Ryzen 5 8400F has an average benchmark score of 25005, which is 0.2% higher than the AMD Ryzen 5 7500F's score of 24964.

Q: What is the minimum FPS recorded for this combo at 1440p Medium settings?

A: The minimum FPS recorded at 2560x1440 with Medium settings is 165 FPS.

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

A: This combo ranks 231st out of 3700 tested combinations, placing it in the top 6.2% of all systems.

Q: At which resolution and settings does the system drop below 60 FPS?

A: The system drops below 60 FPS only at 3840x2160 resolution with Ultra settings, where it averages 52 FPS.