Rust

Rust’s benchmark data for the AMD Ryzen 7 9700X paired with the AMD Radeon RX 580 reveals a system that is heavily constrained by its graphics card, particularly as resolution climbs. The measured average frame rates across 1080p, 1440p, and 4K tell a clear story of a GPU struggling to keep pace with a modern survival title, while the CPU’s substantial headroom remains largely untapped. This analysis breaks down the measured FPS rows to understand where the bottleneck lies and what settings offer the most playable experience.

Resolution Scaling

The frame rate drop from 1920x1080 to 3840x2160 is steep and consistent across all settings, pointing directly at the GPU as the limiting component. At Low settings, the average FPS falls from 71.6 at 1080p to 50.4 at 1440p, a 29.6% reduction, and then plummets to 28.3 at 4K, a 43.8% further drop from 1440p. This pattern—where each doubling of pixel count roughly halves the frame rate—is the classic signature of a pixel-bound workload, indicating the RX 580’s compute and memory resources are saturated long before the Ryzen 7 9700X’s processing power comes into play.

The scaling becomes even more punishing at higher graphical presets. Moving from 1080p to 4K at Ultra settings sees the average FPS collapse from 31.7 to 11.5, a 63.7% loss. Similarly, High settings drop from 41.3 to 17.9 FPS, a 56.7% decline. Interestingly, Medium settings show the most linear degradation: 48.1 to 33.8 to 19.8 FPS across 1080p, 1440p, and 4K. This suggests that at Medium, the game is balancing load between the CPU and GPU more evenly, though the GPU still dictates the ceiling. The data implies that for 4K gaming, the RX 580 is simply outmatched, regardless of how much CPU headroom is available.

GPU Role

The AMD Radeon RX 580’s specifications in the data explain its performance profile. With 8 GB of GDDR5 memory on a 256-bit bus, offering 256.0 GB/s of bandwidth, the card has enough capacity for most textures but lacks the sheer throughput for high-resolution, high-detail rendering. Its base clock of 1257 MHz and boost clock of 1340 MHz, combined with 2304 shading units, deliver a measured FP32 performance of 6.175 TFLOPS. This raw compute power, while respectable for its generation, is insufficient for Rust’s demanding draw distances and dynamic lighting at 4K.

The GPU’s percentile ranking of 53 against all GPUs, with an average benchmark score of 13559, places it just slightly above the median. Its nearest rivals in the data—the NVIDIA GeForce GTX 570 and GTX 950—show deltaPct values of 0 and 0.1%, respectively, indicating that the RX 580 is performance-wise nearly identical to those older cards in synthetic tests. This is a GPU that was mid-range at launch in 2017, and its end-of-life production status means it is now firmly entry-level. In Rust, the 8 GB VRAM is sufficient for 1080p and 1440p, but the 256-bit memory interface becomes a bottleneck at 4K, where the 17.9 FPS average at High settings indicates the card is thrashing to keep up with memory requests.

Settings Recommendations

Based on the measured FPS rows, the most playable experience is achieved at 1920x1080 with Low settings, yielding an average of 71.6 FPS. This is the only configuration in the data that crosses the 60 FPS threshold, providing a smooth baseline for gameplay. For those seeking better visual fidelity, Medium at 1080p delivers 48.1 FPS, which is still within a playable range for a survival game where reaction time matters less than in competitive shooters. High at 1080p drops to 41.3 FPS, which is acceptable but begins to feel sluggish.

At 2560x1440, the data suggests that Low settings are the only viable option, with 50.4 FPS. Medium at 1440p falls to 33.8 FPS, and High drops further to 32.1 FPS, both of which are borderline for smooth gameplay. Ultra settings are not recommended at any resolution, as the 24.5 FPS at 1440p and 31.7 FPS at 1080p are too low for consistent play. At 4K, all settings are effectively unplayable, with the highest average being 28.3 FPS at Low. The data clearly indicates that the RX 580 is best utilized at 1080p with Low or Medium presets, where it can leverage the CPU’s strength to maintain a reasonable frame rate.

Measured FPS Breakdown

The complete dataset provides a precise picture of performance across all combinations. At 1920x1080, the average FPS values are 71.6 (Low), 48.1 (Medium), 41.3 (High), and 31.7 (Ultra). This shows a 40.9% drop from Low to Medium, and a further 14.1% drop from Medium to High. The jump from High to Ultra is a 23.2% reduction, indicating that Ultra settings impose a significant additional load on the GPU.

At 2560x1440, the averages are 50.4 (Low), 33.8 (Medium), 32.1 (High), and 24.5 (Ultra). Notably, the difference between Medium and High at 1440p is minimal (only 1.7 FPS), suggesting that the GPU is already saturated and additional visual features have little impact on performance. At 3840x2160, the averages are 28.3 (Low), 19.8 (Medium), 17.9 (High), and 11.5 (Ultra). The gap between Low and Medium at 4K is 8.5 FPS, but the gap between High and Ultra is only 6.4 FPS, again showing diminishing returns as the GPU hits its limits. Across all resolutions, the data shows that Low settings provide the most headroom, while Ultra settings consistently halve the frame rate compared to Low.

FAQ

Q: What is the best resolution for this CPU/GPU combo in Rust?

A: The data shows 1920x1080 is the only resolution where the average FPS exceeds 60 (71.6 FPS at Low settings). At 2560x1440, the maximum average is 50.4 FPS (Low), and at 3840x2160, the maximum is 28.3 FPS (Low).

Q: How much FPS does the RX 580 lose when moving from 1080p to 4K?

A: At Low settings, the average FPS drops from 71.6 at 1920x1080 to 28.3 at 3840x2160, a 60.5% reduction. At High settings, it drops from 41.3 to 17.9 FPS, a 56.7% reduction.

Q: Is the Ryzen 7 9700X holding back the RX 580 in Rust?

A: No. The CPU’s benchmark scores (e.g., Cinebench R23 multi-core of 31588) and 89th percentile ranking among all CPUs indicate it has far more headroom than the GPU. The frame rate scaling with resolution proves the GPU is the bottleneck.

Q: Which settings preset gives the highest FPS at 1440p?

A: Low settings at 2560x1440 produce the highest average FPS of 50.4. Medium and High are nearly identical at 33.8 and 32.1 FPS, respectively, while Ultra drops to 24.5 FPS.

Q: What is the combo’s overall rank in Rust?

A: This combo ranks 1595 out of 1717 tested combinations, placing it in the bottom 7% of all configurations. This is consistent with the GPU’s 53rd percentile ranking.

Q: How does the RX 580 compare to its nearest rivals in synthetic benchmarks?

A: The RX 580 has an average benchmark score of 13559, which is within 0.2% of the NVIDIA GeForce GTX 570 (13564) and within 0.1% of the GTX 950 (13549). This indicates it performs nearly identically to those older GPUs.

CPU Role

The AMD Ryzen 7 9700X is a Zen 5 architecture processor with 8 cores and 16 threads, running at a base clock of 3.80 GHz and a boost clock of 5.50 GHz. Its benchmark results are exceptional, with a Cinebench R23 multi-core score of 31588 and a single-core score of 4459, placing it in the 89th percentile of all CPUs. In Rust, this CPU is not the limiting factor at any resolution or setting. The data shows that frame rates scale almost entirely with GPU load, and the CPU’s high single-thread performance (Geekbench single-core score of 3353) is more than sufficient for Rust’s game logic and physics.

The CPU’s 32 MB of shared L3 cache and DDR5 memory support (89.6 GB/s bandwidth) provide ample bandwidth for feeding the GPU. Even at 1080p Low settings, where the CPU would typically be most stressed, the 71.6 FPS average is likely constrained by the GPU’s pixel throughput rather than the CPU’s ability to submit draw calls. The 9700X’s 65 W TDP and 4 nm process node also mean it runs cool and efficient, allowing the GPU to be the sole performance limiter. If this CPU were paired with a more powerful GPU, the data suggests it could push significantly higher frame rates, but with the RX 580, its potential is largely untapped.

How This Combo Ranks

The combination of the AMD Ryzen 7 9700X and AMD Radeon RX 580 ranks 1595 out of 1717 tested combos in Rust, putting it in the bottom 7% of all configurations. This low ranking is almost entirely attributable to the GPU. The RX 580’s 53rd percentile ranking among all GPUs, with an average benchmark score of 13559, is the weak link. In contrast, the Ryzen 7 9700X ranks in the 89th percentile among CPUs, with an average benchmark score of 36029. This massive disparity between CPU and GPU performance creates a severe bottleneck, where the graphics card cannot translate the CPU’s power into frame rate.

The data shows that this combo performs worse than 93% of all tested systems, which is expected given the GPU’s age and end-of-life status. The nearest GPU rivals—GTX 570, GTX 950, and Radeon Pro 455—have nearly identical synthetic scores, and their real-world performance in Rust would likely be similar. The combo’s rank suggests that for this game, the CPU is not contributing to the final score; it is merely keeping up with the GPU’s output. Upgrading the GPU to a modern card would likely catapult this combo into a much higher percentile, as the CPU has proven headroom in both single-threaded and multi-threaded workloads. Until then, the ranking reflects a system that is severely held back by its graphics processor.