Rust

The AMD Ryzen 9 9900X paired with the AMD Radeon RX 5700 XT delivers a wide spread of performance in Rust, with frame rates that swing dramatically based on both resolution and graphical preset. The measured data shows a system that is heavily constrained by the graphics card at higher resolutions, but which reveals the CPU's strength when the load shifts toward lower resolutions and lighter settings.

Resolution Scaling

The transition from 1080p to 4K exposes a classic GPU-bound bottleneck. At 1920x1080 with Low settings, the combo produces 138.3 FPS average. Moving to 2560x1440 Low drops that to 92.4 FPS, a reduction of roughly 45.9 FPS, and at 3840x2160 Low the average falls to 58 FPS. This scaling pattern is steep and consistent, indicating that the RX 5700 XT is the primary limiting component as pixel count rises.

The same trend holds for the High preset. At 1080p High, the average is 77.6 FPS; at 1440p High, it is 54.1 FPS; and at 4K High, it collapses to 32.8 FPS. The drop from 1080p to 4K on High settings is a 44.8 FPS loss, a 57.7% decrease in raw throughput. This is not a subtle degradation; it is a clear sign that the GPU’s 8 GB of VRAM and RDNA 1.0 architecture are overwhelmed by Rust’s higher-detail rendering at 4K.

The scaling between Medium and High presets is also telling. At 4K, Medium yields 36.1 FPS while High yields 32.8 FPS, a small 3.3 FPS gap. This suggests that beyond a certain point, the GPU is so saturated that preset changes yield diminishing returns. In contrast, the gap between Low and Medium at 1080p is 46.9 FPS (138.3 vs 91.3), showing that the GPU still has headroom at lower resolutions. The data strongly implies that for playable 4K performance, only the Low preset is viable, and even then it barely crosses 60 FPS.

How This Combo Ranks

In the database of tested combinations for Rust, this pairing sits at rank 1203 out of 1717 combos. That places it in the lower third of all tested systems, a position that reflects the age and tier of the RX 5700 XT relative to modern hardware. The CPU, however, is not the weak link. The Ryzen 9 9900X holds a percentile of 94 against all CPUs, meaning it outperforms 94% of processors in the database. The GPU, by contrast, sits at the 68th percentile against all GPUs.

The discrepancy between the CPU's high percentile and the overall combo's low rank is instructive. The GPU is the anchor. The RX 5700 XT's average benchmark score of 24731 places it near rivals like the NVIDIA RTX A5000 Mobile (24763, a -0.1% delta) and the Intel Arc A350M (24647, a 0.3% delta). These are close scores, but they are not high scores in absolute terms. The combo rank of 1203 out of 1717 suggests that many other pairings, likely those with newer or higher-tier GPUs, produce better Rust performance. This is a mid-pack result at best, and it is entirely attributable to the GPU's limitations.

CPU Role

The Ryzen 9 9900X is a 12-core, 24-thread processor based on the Zen 5 architecture, fabricated on a 4 nm process at TSMC. Its base clock is 4.40 GHz with a boost clock of 5.60 GHz. For Rust, a game known for its physics simulation and server-side calculations, the CPU's multi-threaded capabilities are relevant. In Cinebench R23, the CPU scores 46438 in multi-core and 6555 in single-core. These are strong numbers, and the CPU's 3DMark max-thread score of 13929 reinforces its ability to handle heavy workloads.

However, the measured FPS data shows that the CPU is not the limiting factor in most scenarios. At 1080p Low, the combo reaches 138.3 FPS, which is high enough to suggest the CPU can feed the GPU adequately at that resolution. The single-core performance, measured at 1286 in 3DMark single-thread and 4672 in PassMark single-thread, is sufficient for Rust's primary thread. The CPU's L3 cache of 64 MB shared is also beneficial for game logic. The data indicates that the CPU is capable of much higher frame rates than the GPU can deliver, particularly at higher resolutions where the GPU saturates first.

Measured FPS Breakdown

At 1920x1080, the full preset range is playable. Low yields 138.3 FPS, Medium yields 91.3 FPS, High yields 77.6 FPS, and Ultra yields 60.5 FPS. The scaling from Low to Ultra is a 77.8 FPS drop, but even the lowest of these is above 60 FPS, making 1080p a smooth experience on any setting.

At 2560x1440, the numbers tighten. Low produces 92.4 FPS, Medium 65.5 FPS, High 54.1 FPS, and Ultra 41.8 FPS. The drop from Low to Ultra is 50.6 FPS. The Medium preset remains playable, but High falls below 60 FPS, and Ultra is clearly not smooth. The 4K results are more constrained. At 3840x2160, Low averages 58 FPS, Medium 36.1 FPS, High 32.8 FPS, and Ultra 27 FPS. Only Low approaches a playable threshold, and even that is marginal.

The data shows a consistent pattern: each preset step down yields a larger absolute FPS gain at lower resolutions. For example, at 1080p, moving from Ultra to High gains 17.1 FPS; at 1440p, the same move gains 12.3 FPS; at 4K, it gains only 5.8 FPS. This confirms that the GPU's performance ceiling is reached quickly as resolution increases, and that the CPU has no trouble keeping up across all settings.

GPU Role

The AMD Radeon RX 5700 XT is built on the RDNA 1.0 architecture with a Navi 10 chip, manufactured on a 7 nm process. It has 8 GB of GDDR6 memory on a 256-bit bus, providing 448.0 GB/s of bandwidth. The boost clock is 1905 MHz, and the FP32 performance is rated at 9.754 TFLOPS. These specifications are modest by modern standards, and the benchmark scores reflect that. The GPU's 3DMark Steel Nomad DX12 score is 2134, and its PassMark G3D score is 16277.

In Rust, the GPU's limited memory bandwidth and raw compute power become evident at higher resolutions. The 8 GB VRAM is likely a constraint at 4K with High or Ultra settings, where texture detail and draw distances demand more memory. The measured FPS at 4K Ultra (27 FPS) and 4K High (32.8 FPS) are both well below playable thresholds, indicating that the GPU is fully saturated. The GPU's percentile of 68 against all GPUs places it near the RTX A5000 Mobile (-0.1% delta) and the RTX 5060 Mobile (0.6% delta), but those are mobile parts; the desktop RX 5700 XT is aging out of relevance for demanding titles like Rust at high resolutions.

Settings Recommendations

Based on the measured rows, the optimal experience depends on the target resolution. At 1920x1080, the High preset at 77.6 FPS is the best balance of visual quality and performance. Ultra at 60.5 FPS is playable but offers diminishing returns over High, and the 17.1 FPS cost is not justified for most users. Medium at 91.3 FPS is a viable alternative for those prioritizing frame rate over fidelity.

At 2560x1440, the Medium preset at 65.5 FPS is the recommended choice. It stays above 60 FPS while providing acceptable detail. High at 54.1 FPS is borderline, and Ultra at 41.8 FPS is too slow for a game that requires quick reactions. Low at 92.4 FPS is the option for competitive play, but it sacrifices too much visual quality for general use.

At 3840x2160, the Low preset at 58 FPS is the only reasonable option. Medium at 36.1 FPS and High at 32.8 FPS are both too choppy for a survival game where player-versus-player combat is common. Ultra at 27 FPS is not viable. The data shows that this combo is not suited for 4K gaming in Rust beyond the lowest settings, and users with 4K displays should either lower resolution or consider a GPU upgrade. For most users, playing at 1080p High or 1440p Medium will deliver the best experience relative to the measured performance.