Rust

The AMD Ryzen 5 7400F and AMD Radeon RX 570 combination represents a study in contrasts: a modern, high-IPC Zen 4 processor paired with a legacy Polaris GPU from 2017. In Rust, a game known for its demanding server-side simulation and heavy draw calls, this pairing produces a predictable bottleneck. The data shows that the GPU consistently caps performance, even at lower resolutions, while the CPU’s substantial single-threaded horsepower goes largely underutilized in the measured frames. This analysis breaks down the measured FPS across resolutions and settings to identify where the system’s strengths and weaknesses lie.

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 5 7400F is a 6-core, 12-thread processor based on the Zen 4 architecture, manufactured on a 5 nm process. It operates with a base clock of 3.70 GHz and a boost clock of 4.70 GHz, with a 65 W TDP. The processor’s architecture, codenamed Raphael, supports DDR5 memory on a dual-channel bus, providing a memory bandwidth of 83.2 GB/s. Its cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a shared 32 MB L3 cache. In synthetic benchmarks, the CPU achieves a Cinebench R23 multi-core score of 21765 and a single-core score of 3072, placing it in the 83rd percentile of all tested CPUs.

For Rust, single-core performance is often a limiting factor due to the game's engine and the sheer volume of entity updates. The 7400F’s single-core score of 3072 is notably robust, indicating it can handle the game's simulation thread with relative ease. However, the measured frame rates do not reflect a CPU limitation. At 1080p Low, the system hits 66 FPS, which is respectable, but the GPU is already saturated. The CPU's multi-core capability, while strong for other tasks, is less relevant here, as Rust typically scales to a limited number of threads. The data suggests that the processor is not the primary constraint; the frame rates are consistently limited by the graphics card, even when the resolution drops to 1080p.

GPU Role — VRAM, clocks, and how they relate to this game's results

The AMD Radeon RX 570 is an older graphics card based on the GCN 4.0 architecture, built on a 14 nm process at GlobalFoundries. It features 2048 shading units and 32 ROPs, with a base clock of 1168 MHz and a boost clock of 1244 MHz. The card comes with 4 GB of GDDR5 memory on a 256-bit bus, yielding a bandwidth of 224.0 GB/s. Its compute capability is rated at 5.095 TFLOPS for FP32 operations. In synthetic tests, it scores 880 in 3DMark Steel Nomad DX12, which is a modern benchmark that stresses the GPU heavily. The card's percentile ranking against all GPUs is 74.

In the context of Rust, the RX 570’s 4 GB VRAM is a potential issue. The measured data shows a clear drop in performance as settings are increased at each resolution. At 1080p, the average FPS goes from 66 on Low to 29 on Ultra, a massive 56% reduction, indicating that the GPU’s memory bandwidth and raw compute are being overwhelmed. The texture-heavy nature of Rust, combined with the limited VRAM, likely causes the GPU to swap data, which can lead to stuttering. The card’s performance is far below the CPU’s capability, making it the definitive bottleneck in this system. The 224.0 GB/s bandwidth is insufficient for high-resolution textures, and the 4 GB capacity is a hard limit for the game’s asset streaming.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data reveals a classic GPU-bound scaling pattern. Moving from 1080p to 1440p to 4K at the same settings shows a consistent and significant drop in average frame rate, which is a hallmark of a graphics card that is working at its absolute limit.

At Low settings, the average FPS drops from 66 at 1080p to 46 at 1440p and then to 27 at 4K. This is a reduction of approximately 30% when moving to 1440p, and another 41% when moving to 4K. This steep decline indicates that the GPU’s pixel throughput and memory bandwidth are the primary constraints; the CPU is not able to compensate for the increased load. At High settings, the pattern is similar: 38 FPS at 1080p, 26 at 1440p, and 15 at 4K. The scaling factor is consistent, suggesting that the bottleneck does not shift between components as resolution changes; the RX 570 remains the limiting factor across the board.

The difference between 1080p and 4K at Medium settings is even more telling. The average FPS goes from 44 to 18, a 59% reduction. This does not happen in a CPU-bound scenario, where the frame rate would remain more stable as resolution increases. The data strongly indicates that the CPU is not the constraint; if it were, the FPS would be similar at 1080p and 4K, as the CPU’s workload would remain constant. Instead, the FPS is halved or worse, confirming that the RX 570’s fill rate and memory bandwidth are being exhausted by the higher pixel counts.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

The measured FPS table provides a complete picture of the system’s performance. At 1920x1080, the system achieves an average of 66 FPS on Low, 44 FPS on Medium, 38 FPS on High, and 29 FPS on Ultra. The Medium settings show a minimum of 38 FPS and a maximum of 51 FPS, indicating some frame time variance, but the average is playable for most users.

At 2560x1440, the averages drop to 46 FPS on Low, 31 FPS on Medium, 26 FPS on High, and 20 FPS on Ultra. The Medium preset again shows a range, with a minimum of 26 and a maximum of 35 FPS. This resolution begins to feel less smooth, with the Low preset being the only one that consistently maintains a frame rate above 40.

At 3840x2160 (4K), the system struggles. The average FPS is 27 on Low, 18 on Medium, 15 on High, and 12 on Ultra. The Medium preset provides a minimum of 15 and a maximum of 21 FPS, which is a very poor experience for a game like Rust, where quick reactions are needed. The Ultra preset at 12 FPS is essentially unplayable. The data shows that the RX 570 is only capable of providing a playable experience at 1080p with lower settings, and even then, the frame rate is not high.

How This Combo Ranks — use comboRankInGame vs other tested combos

In the database of tested hardware combinations for Rust, this specific pairing of the AMD Ryzen 5 7400F and the AMD Radeon RX 570 ranks 2822 out of 2953 combos. This places it in the bottom 5% of all tested systems, which is a very low ranking. The rank is a direct consequence of the GPU’s limitations; the processor is far more capable than the graphics card, but the overall system performance is dragged down by the RX 570.

This rank of 2822 out of 2953 is a stark indicator of the system’s overall capability. It suggests that while the CPU is in the 83rd percentile of all CPUs, the GPU’s 74th percentile ranking is not enough to compensate for its age and limited VRAM. The combination’s average FPS across all settings and resolutions is low, which contributes to its poor standing. The data implies that the GPU is a severe bottleneck, preventing the CPU from ever being fully utilized in this title. The system is effectively a strong processor held back by a weak graphics card, which is why it ranks so poorly among all tested combos.

Settings Recommendations — which preset gives the best experience per the measured rows

Based on the measured FPS data, the recommended settings for this combination are heavily dependent on the target resolution and the user’s tolerance for frame rate dips.

For 1920x1080, the Medium preset offers the best balance. It provides an average of 44 FPS, which is above the playable threshold, and the minimum of 38 FPS suggests that it will rarely drop into unplayable territory. The Low preset at 66 FPS is smoother, but the visual quality is significantly reduced. The High preset at 38 FPS is playable but the frame rate is not stable enough for competitive play, and the Ultra preset at 29 FPS is too slow for a game where situational awareness is critical.

For 2560x1440, the Low preset is the only viable option, yielding an average of 46 FPS. The Medium preset at 31 FPS and High at 26 FPS are too inconsistent to recommend for a smooth experience. The Ultra preset at 20 FPS is not recommended. At 3840x2160, no preset provides a playable experience. Even the Low preset at 27 FPS is below the threshold for a responsive game, and the others are in the 12-18 FPS range, which is a slideshow.

The data strongly suggests that this combination is best suited for 1080p gaming with settings set to Medium or Low. Pushing to higher resolutions or higher settings results in a severe performance penalty that outweighs any visual benefit.

FAQ

Q: What is the best resolution to play Rust with this CPU and GPU combination?

A: Based on the data, 1920x1080 is the only resolution that provides a consistent playable experience. At 2560x1440, only the Low preset is acceptable, while 3840x2160 is unplayable across all settings.

Q: How does the frame rate change between Low and Ultra settings at 1080p?

A: The average FPS drops from 66 on Low to 29 on Ultra at 1920x1080. This is a 56% reduction in performance, indicating that the GPU is heavily taxed by the higher visual fidelity settings.

Q: Is the CPU or the GPU the limiting factor in this system for Rust?

A: The data indicates the GPU is the primary bottleneck. The frame rate drops significantly as resolution increases, which is a characteristic of a GPU-bound system. The CPU’s strong single-core performance is not the constraint.

Q: What is the rank of this combination among all tested systems?

A: The combo ranks 2822 out of 2953 tested combinations for Rust. This places it in the bottom 5% of systems, largely due to the graphics card’s limitations.

Q: Are there any settings where the frame rate is stable enough for competitive play?

A: At 1080p with Low settings, the system averages 66 FPS, which is stable. The Medium preset at 1080p averages 44 FPS with a minimum of 38 FPS, which could be acceptable for casual play, but the Low preset is safer for consistent performance.

Q: Does the 4 GB VRAM of the RX 570 affect performance in Rust?

A: Yes, the data suggests it does. The frame rate drops sharply when increasing settings, which is likely due to the 4 GB VRAM being insufficient for higher texture quality, causing performance to degrade as the GPU tries to manage memory resources.