Rust

The AMD Ryzen 5 8400F paired with the AMD Radeon RX 6750 XT delivers a highly playable Rust experience, though the data reveals a system that is firmly balanced toward 1080p and 1440p gaming rather than 4K. The measured frames per second (FPS) across all resolutions and presets show a clear pattern: this combo is capable of high refresh rates at lower resolutions, but struggles to maintain smooth gameplay at 4K with higher settings. The benchmark results indicate that the GPU becomes the primary bottleneck as resolution increases, while the CPU’s six Zen 4 cores provide a solid foundation for the game's demanding single-threaded and multi-threaded workloads.

Resolution Scaling

The transition from 1920x1080 to 3840x2160 produces a dramatic drop in performance, highlighting the GPU's limitations at higher pixel counts. At the High preset, the average FPS falls from 98.5 at 1080p to 66.1 at 1440p, a reduction of approximately 33%, and then further down to 37.9 at 4K. This scaling pattern is typical of a GPU-bound scenario, where the rendering load grows exponentially with resolution. The data shows that the RX 6750 XT is not designed for 4K gaming in Rust, as even the Low preset at 4K only manages 72.3 FPS, which is below the 98.5 FPS achieved at 1080p High.

The gap between 1080p and 1440p is significant but manageable, with the Low preset showing a drop from 172.6 to 122.2 FPS. However, the jump from 1440p to 4K is far more punishing, with the Medium preset falling from 78.3 to 46.3 FPS. This suggests that the GPU's 12 GB of VRAM and 192-bit memory bus, while sufficient for 1440p, are stretched thin at 4K. The Ultra preset at 4K is nearly unplayable at 30.6 FPS, indicating that this resolution is beyond the intended scope of this hardware combination. For users targeting 4K, the data strongly suggests that the CPU is not the limiting factor; rather, the GPU's raw compute power and memory bandwidth are the constraints.

GPU Role

The Radeon RX 6750 XT is built on the RDNA 2.0 architecture with a Navi 22 chip, featuring 2560 shading units and 40 ray accelerators. Its boost clock of 2600 MHz and game clock of 2495 MHz provide the raw throughput needed for 1080p and 1440p gaming. The GPU's 12 GB of GDDR6 memory on a 192-bit bus delivers 432.0 GB/s of bandwidth, which is adequate for Rust's large maps and textures but becomes a limiting factor at 4K. The benchmark results show that the GPU’s performance scales predictably with settings, with the Low preset at 1080p hitting 172.6 FPS, which drops to 78.2 FPS at Ultra, indicating that the graphics card is fully utilized across all presets.

The GPU's percentile rank of 79 vs all GPUs places it in the upper mid-range, and its nearest rivals include the NVIDIA GeForce RTX 3080, which is only 1.3% faster in average benchmark score. This context is crucial: the RX 6750 XT is not a weak card, but it is positioned for 1440p gaming. In Rust, the measured data confirms this, as the 1440p High preset at 66.1 FPS is playable, while the 4K High preset at 37.9 FPS is not. The card's 13.31 TFLOPS of FP32 performance and 416.0 GTexel/s texture rate are sufficient for most scenarios, but the 4K results reveal that the GPU is the bottleneck there, as the CPU is likely waiting on the GPU to complete frames.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor based on the Zen 4 architecture (Phoenix codename) on a 4 nm process. Its base clock of 4.20 GHz and boost clock of 4.70 GHz provide strong single-threaded performance, which is critical for Rust’s game logic and physics calculations. The CPU’s 16 MB of shared L3 cache and 83.2 GB/s of dual-channel DDR5 memory bandwidth support the GPU well at lower resolutions. The benchmark scores reflect this, with a Cinebench R23 multicore score of 20851 and a single-core score of 2943, placing it in the 82nd percentile vs all CPUs.

In the measured FPS data, the CPU’s role becomes evident when comparing the 1080p Low preset (172.6 FPS) to the 1440p Low preset (122.2 FPS). The 1080p result is likely pushing the CPU to its limits, as the GPU has more headroom at lower resolutions. However, the CPU is not the primary bottleneck for this game, as the FPS drops are more pronounced with resolution increases than with setting changes. The nearest rivals for the CPU include the AMD Ryzen 7 2700X, which has an identical average benchmark score, and the AMD Ryzen 5 7500F, which is 0.3% faster. This indicates that the 8400F is competitive with older and newer chips, but its 6-core configuration is sufficient for Rust, which is known to be more dependent on single-core performance than on multi-core scaling.

How This Combo Ranks

This specific combination of the Ryzen 5 8400F and RX 6750 XT ranks 821 out of 1717 tested combos, placing it in the upper-middle range of all systems tested for Rust. This ranking is influenced by both the GPU’s 79th percentile and the CPU’s 82nd percentile scores. The data shows that this combo is not a top-tier performer, nor is it a low-end option; it sits comfortably in the middle, which aligns with the measured FPS results. The ranking suggests that while the combo is capable of smooth 1080p and decent 1440p gameplay, it will not compete with higher-end configurations that pair flagship GPUs with top-tier CPUs.

The combo’s rank is also reflective of the balance between the two components. The GPU’s nearest rival, the NVIDIA GeForce RTX 3080, is only 1.3% faster, meaning that the RX 6750 XT is a strong pairing for the CPU. However, the CPU’s nearest rival, the AMD Ryzen 7 2700X, has an identical average score, suggesting that the 8400F is not a performance outlier. This balance means that neither component is severely holding back the other, but the overall system is limited by the GPU at higher resolutions and by the CPU at very high frame rates. For users looking to improve performance, the data suggests that upgrading the GPU would yield the most significant gains at 4K, while the CPU would need to be upgraded to push past 172 FPS at 1080p.

Measured FPS Breakdown

At 1920x1080, the combo delivers excellent performance across all presets. The Low preset achieves 172.6 FPS, which is ideal for competitive play, while the Medium preset hits 113.7 FPS, and the High preset reaches 98.5 FPS. The Ultra preset drops to 78.2 FPS, which is still playable but shows a significant hit from the High preset. This resolution is clearly the sweet spot for this hardware, with all presets above 75 FPS.

Moving to 2560x1440, the performance remains solid but the drop is noticeable. The Low preset produces 122.2 FPS, which is still high, but the Medium preset falls to 78.3 FPS, and the High preset drops to 66.1 FPS. The Ultra preset at 49.5 FPS is borderline playable, suggesting that users should stick to Medium or High for a smooth experience. At 3840x2160, the limits are evident: the Low preset manages 72.3 FPS, but the Medium preset drops to 46.3 FPS, the High preset to 37.9 FPS, and the Ultra preset to 30.6 FPS. These numbers indicate that 4K gaming is only viable with the Low preset, and even then, it is not optimal for fast-paced gameplay.

Settings Recommendations

Based on the measured rows, the best experience is achieved at 1920x1080 with the High preset, which delivers 98.5 FPS and a good balance between visual quality and performance. For users with 1440p monitors, the Medium preset at 78.3 FPS is the recommended choice, as it provides a smooth frame rate without sacrificing too much visual fidelity. The High preset at 1440p (66.1 FPS) is also acceptable, but the Medium preset offers more headroom for dips in demanding scenes.

For 4K displays, the data indicates that the Low preset is the only viable option, with 72.3 FPS, but this comes with significant visual compromises. The Ultra preset is not recommended at any resolution above 1080p, as it drops below 50 FPS at 1440p and below 31 FPS at 4K. The measured results suggest that the optimal settings for this combo are High at 1080p and Medium at 1440p, providing a consistent frame rate that takes advantage of the CPU’s strong single-threaded performance and the GPU’s 12 GB of VRAM.