Rust

The pairing of AMD's Ryzen 5 4600G with the NVIDIA GeForce RTX 4080 creates a striking imbalance in Rust, a survival title that is notoriously sensitive to both raw single-thread performance and memory throughput. The data shows a system where the GPU's immense capabilities are frequently held back by the CPU's older architecture, yet the combination still delivers playable results across all tested configurations. This analysis breaks down exactly how this pairing behaves in Rust, focusing on where the bottlenecks lie and which settings offer the most sensible path forward.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals a classic story of a CPU-bound system transitioning into a more balanced state. At 1920x1080 with Low settings, the combination produces an average of 155 FPS. Moving to 2560x1440 at Low settings, the average drops to 137 FPS, a reduction of approximately 12%. At 3840x2160 with Low settings, the average falls further to 115 FPS, meaning the 4K result is roughly 26% lower than the 1080p figure. This relatively modest drop across such a significant resolution increase indicates that at lower settings, the CPU is the primary limiting factor; the GPU has enough headroom to handle the extra pixel workload without causing a proportional FPS collapse.

The scaling pattern changes drastically when the visual load increases. With High settings, the average FPS at 1080p is 126, at 1440p it is 111, and at 4K it is 66. The jump from 1440p to 4K results in a 40% performance loss, suggesting that the GPU is now becoming the bottleneck at the higher resolution. This trend is even more pronounced at Ultra settings, where the average FPS drops from 114 at 1080p to 85 at 1440p, and then plummets to 50 at 4K. The 4K Ultra result represents a 56% decrease from the 1080p Ultra score, clearly showing that the RTX 4080’s rendering load is the dominant factor at these higher fidelity presets.

The data indicates that below 4K, the Ryzen 5 4600G is the constraining component, particularly at Low and Medium settings where the FPS difference between 1080p and 1440p is minimal. The system's performance is effectively capped by the CPU's processing speed. At 4K, however, the tables turn, and the GPU's workload becomes the limiting factor, as evidenced by the significant FPS drops at High and Ultra presets. This suggests that users targeting high refresh rates at 1080p or 1440p will be leaving performance on the table due to the CPU, while 4K gaming is where this GPU begins to show its real strength.

GPU Role

The NVIDIA GeForce RTX 4080 is a powerhouse built on the Ada Lovelace architecture, featuring 16 GB of GDDR6X memory on a 256-bit bus, delivering a bandwidth of 716.8 GB/s. Its boost clock is rated at 2505 MHz, and its benchmark scores place it in the 86th percentile of all GPUs. The data shows that this hardware is more than capable of handling Rust’s demands, but its performance is often constrained by the CPU in this specific combo.

The GPU's role is most evident in the 4K resolution results. At 3840x2160, the average FPS scales from 50 at Ultra, to 66 at High, 79 at Medium, and 115 at Low. This wide spread—a 65 FPS difference between Ultra and Low—demonstrates the GPU's sensitivity to the game's shading and texture workloads. The fact that the 4K Low result (115 FPS) is higher than the 1080p High result (126 FPS) shows that the GPU is not the limiting factor at lower resolutions, but rather the CPU is preventing the GPU from reaching its full potential.

In contrast, the GPU's memory capacity and bandwidth are not stressed by Rust at these settings. The 16 GB frame buffer is ample for the game's needs, and the memory clock of 1400 MHz (22.4 Gbps effective) provides sufficient throughput for the geometry and texture data. The benchmark results indicate that the RTX 4080 is capable of far higher frame rates than what this combo achieves, solidifying the conclusion that the CPU is the primary bottleneck in most scenarios. The GPU's Passmark G3D score of 34457 places it among the top-tier cards, but this combo only sees a fraction of that potential at lower resolutions.

How This Combo Ranks

In the database of tested combinations, this specific pairing of the Ryzen 5 4600G and RTX 4080 ranks 751st out of 3723 combos for Rust. This places it in the top 20% of all tested systems, which is respectable given the CPU's age. However, the ranking highlights the mismatch between the two components; the GPU alone sits in the 86th percentile of all GPUs, while the CPU sits in the 71st percentile of all CPUs.

The data suggests that this ranking is heavily influenced by the CPU's limitations. The combo rank is likely lower than what the RTX 4080 would achieve with a more modern processor, as the CPU's single-thread performance and memory bandwidth cap the achievable frame rates. The nearest rivals for the CPU, such as the AMD Ryzen 3 PRO 5355GE (0.1% higher average score) and the Intel Core i3-14100T (0.8% higher average score), indicate that the 4600G is competitive with other budget processors, but none of these are particularly strong for gaming. This combo's ranking reflects a system that performs well in absolute terms but is not optimized for the GPU's capabilities.

Measured FPS Breakdown

The measured FPS data provides a clear picture of the system's capabilities across all tested configurations. At 1920x1080, the average frame rates are as follows: Low settings produce 155 FPS, Medium settings produce 133 FPS with a minimum of 113 and a maximum of 153, High settings produce 126 FPS, and Ultra settings produce 114 FPS. The difference between Low and Ultra is 41 FPS, indicating that the CPU is able to maintain a relatively high floor even as the GPU workload increases.

At 2560x1440, the average frame rates shift to 137 FPS on Low, 118 FPS on Medium (with a minimum of 100 and a maximum of 136), 111 FPS on High, and 85 FPS on Ultra. The gap between Low and Ultra here is 52 FPS, showing that the GPU is starting to become more of a factor. The Medium setting at 1440p shows a tighter frame time variance compared to 1080p, suggesting that the system is becoming more GPU-bound.

At 3840x2160, the average frame rates are 115 FPS on Low, 79 FPS on Medium (with a minimum of 67 and a maximum of 90), 66 FPS on High, and 50 FPS on Ultra. The drop from Medium to High is 13 FPS, while the drop from High to Ultra is 16 FPS. The 4K Low result is notably higher than the 1080p Ultra result, which is a clear indicator of the CPU bottleneck at lower resolutions. The 4K Medium result, with its minimum of 67 FPS, is still smooth, but the Ultra preset at 50 FPS falls below the 60 FPS threshold that many players consider the minimum for a good experience.

Settings Recommendations

Based on the measured data, the optimal experience for this combo depends heavily on the target resolution. For players at 1920x1080, the Ultra preset at 114 FPS is the best choice, as it delivers the highest visual fidelity without sacrificing smoothness. The Medium preset at 133 FPS offers a significant boost in frame rate for a noticeable reduction in visual quality, but the Ultra preset's performance is already well above the playable threshold.

At 2560x1440, the High preset at 111 FPS is the sweet spot. It provides a balanced blend of visual detail and performance, with the Ultra preset at 85 FPS still being very playable but not offering a substantial visual upgrade over High. The Medium preset at 118 FPS is also a strong option for players who prioritize frame rate above all else, as the difference between Medium and High is only 7 FPS, while the visual difference can be significant.

For 4K gaming, the recommendation is more nuanced. The Low preset at 115 FPS is the only option that provides a comfortable margin above 60 FPS, but it sacrifices most of the visual enhancements. The Medium preset at 79 FPS is the best balance for 4K, as it maintains a smooth frame rate while still offering a decent level of detail. The High preset at 66 FPS is acceptable, but the Ultra preset at 50 FPS should be avoided due to its sub-60 FPS average, which can lead to noticeable stuttering in a game like Rust where quick reactions are often necessary.

CPU Role

The AMD Ryzen 5 4600G is a 6-core, 12-thread processor based on the Zen 2 architecture, with a base clock of 3.70 GHz and a boost clock of 4.20 GHz. It has 8 MB of shared L3 cache and supports dual-channel DDR4 memory with a bandwidth of 51.2 GB/s. Its benchmark scores, such as a Cinebench R23 multicore score of 13593 and a single-core score of 1919, place it in the 71st percentile of all CPUs. However, these scores are modest compared to more modern processors.

In Rust, the CPU's role is critical, as the game is known for being heavily dependent on single-thread performance and memory latency. The data shows that the 4600G is the bottleneck in this combo at resolutions below 4K. The fact that the FPS at 1080p Low (155) is only slightly higher than at 1440p Low (137) suggests that the CPU is hitting its limit. The CPU's 8 MB of L3 cache is relatively small by modern standards, and its memory bandwidth of 51.2 GB/s is a limiting factor for a game that often streams large amounts of world data.

The CPU's performance is also reflected in its nearest rivals. The Intel Core i3-14100T has a 0.8% higher average benchmark score, and the AMD Ryzen 3 8300GE has a 0.6% higher score, but these are all similarly positioned in terms of overall performance. None of these processors are top-tier gaming CPUs, and the data indicates that the 4600G is holding back the RTX 4080 in Rust. For players with this combo, the CPU is the clear upgrade path to unlock more performance, particularly at 1080p and 1440p where the GPU has plenty of headroom.