Rust

Resolution Scaling

The measured frame rates for this Intel Core i5-10400F and AMD Radeon RX 580 combination in Rust show a steep performance cliff as resolution climbs. At 1080p with Low settings, the combo delivers 72.5 FPS average, which is the only configuration in the dataset that crosses the 60 FPS threshold. Moving to 1440p at the same Low preset drops the average to 49.1 FPS, a reduction of roughly 32% from the 1080p figure. At 4K with Low settings, the average falls further to 32.7 FPS, which is less than half of the 1080p Low result.

The scaling pattern across presets reveals that the GPU becomes the dominant limiting factor as resolution increases. At 1080p High, the system produces 43.1 FPS, while at 1440p High it drops to 29.4 FPS, and at 4K High it bottoms out at 19.3 FPS. The delta between 1080p and 4K at High settings is a 55% loss in average frame rate. This is consistent with a GPU that has 8 GB of GDDR5 memory and a 256-bit bus, but whose compute throughput—measured at 6.175 TFLOPS FP32—simply cannot sustain the pixel workload at 4K.

Interestingly, the Medium preset shows almost no benefit over High at 4K: 19.6 FPS versus 19.3 FPS, a negligible 0.3 FPS difference. This suggests that at 4K, the RX 580 is already saturated at Medium settings, and additional quality reductions yield no tangible headroom. At 1440p, the Medium preset produces 33.4 FPS, which is 4 FPS higher than High at the same resolution, indicating that the card has some spare capacity at 1440p but not enough to make Medium a comfortable experience.

The Ultra preset is the worst offender across all resolutions. At 1080p, Ultra delivers 29.8 FPS, which is 42.8 FPS lower than Low at the same resolution. At 1440p, Ultra drops to 20.3 FPS, and at 4K it falls to 13.3 FPS. The gap between Low and Ultra widens as resolution increases: at 1080p the difference is 42.7 FPS, at 1440p it is 28.8 FPS, and at 4K it is 19.4 FPS. This compression of the preset range at higher resolutions reinforces the conclusion that the GPU is the bottleneck—when pixel count rises, the relative cost of quality settings shrinks because the shading units are already overburdened.

The data shows that this combo is viable only at 1080p for playable frame rates. At 1440p, even Low settings produce a sub-60 FPS average, and at 4K every preset is below 35 FPS. The CPU's 6 cores and 12 threads, with a boost clock of 4.30 GHz, are likely sufficient to feed the GPU at 1080p, but the RX 580's 32 ROPs and 144 TMUs are the constraining factors at higher resolutions.

Settings Recommendations

The measured rows point to a single clear recommendation for this hardware combination: run Rust at 1080p with Low settings. This is the only configuration in the entire dataset that achieves an average above 60 FPS, hitting 72.5 FPS. The jump from Low to Medium at 1080p costs 24.9 FPS, dropping the average to 47.6 FPS, which is still below the 60 FPS threshold but arguably playable for less demanding users.

For users who prefer visual fidelity over raw frame rate, 1080p High is the best compromise. It delivers 43.1 FPS, which is 4.5 FPS lower than Medium but likely offers noticeably better image quality in Rust's environment. The step from High to Ultra at 1080p is harsh: the average falls to 29.8 FPS, a 13.3 FPS loss that is not justified by the marginal quality increase.

At 1440p, no preset is truly comfortable. Low produces 49.1 FPS, which is the highest at that resolution, but it still falls below the 60 FPS line. Medium at 1440p yields 33.4 FPS, and High drops to 29.4 FPS. The difference between Medium and High at 1440p is only 4 FPS, so users forced to play at this resolution should stick with Low unless they can tolerate sub-35 FPS averages.

At 4K, the situation is unresolvable. Even Low produces only 32.7 FPS, and Ultra is at 13.3 FPS. The data shows that the RX 580's 8 GB frame buffer is not the issue—the card has enough memory capacity—but the shading and texture throughput is insufficient for 4K in Rust. Users with this combo should avoid 4K altogether.

The recommendation hierarchy from the measured data is: 1080p Low for best performance, 1080p High for balanced quality, 1440p Low for higher resolution with compromised smoothness, and no preset at 4K offers a playable experience.

FAQ

Q: What is the best resolution and preset for this combo in Rust?

A: The measured data shows 1080p with Low settings is the only configuration above 60 FPS, averaging 72.5 FPS. All other resolution and preset combinations fall below 50 FPS.

Q: How much performance is lost when moving from 1080p to 1440p at the same settings?

A: At Low settings, the average drops from 72.5 FPS at 1080p to 49.1 FPS at 1440p, a loss of 23.4 FPS. At High settings, the drop is from 43.1 FPS to 29.4 FPS, a loss of 13.7 FPS.

Q: Is the RX 580's 8 GB VRAM sufficient for Rust at 4K?

A: The memory capacity is not the limiting factor—the card has 8 GB of GDDR5. The measured 4K frame rates range from 13.3 FPS at Ultra to 32.7 FPS at Low, indicating compute throughput, not memory, is the bottleneck.

Q: Why is the difference between Medium and High so small at 4K?

A: At 4K, Medium produces 19.6 FPS and High produces 19.3 FPS, a difference of only 0.3 FPS. This suggests the GPU is fully saturated at Medium settings, so reducing quality further does not free up meaningful resources.

Q: What does the combo rank tell us about this hardware pairing?

A: The combo ranks 1597 out of 1717 tested combinations in Rust, placing it in the lower percentile of all tested systems. This is consistent with the sub-60 FPS results at most settings.

Q: Can this system achieve 60 FPS at 1440p in Rust?

A: No. The highest 1440p result is 49.1 FPS at Low settings. Every other 1440p preset is below 35 FPS, so 60 FPS at 1440p is not achievable with this hardware.

How This Combo Ranks

The combo rank for this Intel Core i5-10400F and AMD Radeon RX 580 pairing in Rust is 1597 out of 1717 tested combinations. This places the system in the bottom 7% of all recorded configurations, which is a poor result for a game that is heavily dependent on both CPU and GPU performance. The rank reflects the measured frame rates across all presets and resolutions, not just the best-case 1080p Low scenario.

The CPU itself is not the primary weakness. The Core i5-10400F sits at the 73rd percentile against all CPUs, with an average benchmark score of 14168. Its nearest rivals include the AMD EPYC 7552 (0.4% higher score), the AMD Ryzen 3 7320C (0.8% lower), and the Intel Core i5-8500 (1.1% lower). This indicates the processor is a mid-range performer that should not bottleneck most gaming scenarios at 1080p.

The GPU is the more significant liability. The Radeon RX 580 sits at the 53rd percentile against all GPUs, with an average benchmark score of 13559. Its nearest rivals are remarkably close: the NVIDIA GeForce GTX 570 matches it exactly (0% delta), the GTX 950 is 0.1% behind, and the AMD Radeon Pro 455 is 1.1% ahead. This places the RX 580 in a performance tier that is roughly comparable to a decade-old flagship, which explains its difficulty with Rust's demanding rendering at higher resolutions.

The combination of a 73rd-percentile CPU with a 53rd-percentile GPU creates a system where the GPU is the clear bottleneck. At 1080p Low, the CPU has enough headroom to push the GPU to 72.5 FPS, but at higher resolutions the GPU's 6.175 TFLOPS of FP32 throughput is insufficient. The rank of 1597 out of 1717 reflects this imbalance—the system is capable of playable frame rates only in the most forgiving configuration.

GPU Role

The AMD Radeon RX 580 is the defining component in this combo's Rust performance. With a base clock of 1257 MHz and a boost clock of 1340 MHz, the card operates at a modest frequency for its generation. The 14 nm Polaris 20 chip contains 5,700 million transistors on a 232 mm² die, yielding a transistor density of 24.6M per mm². This is an older architecture, GCN 4.0, which lacks the dedicated ray tracing or tensor cores found in newer designs.

The 8 GB of GDDR5 memory runs at 2000 MHz (8 Gbps effective) across a 256-bit bus, providing 256.0 GB/s of bandwidth. This memory configuration is not the limiting factor in Rust—the card has ample capacity and bandwidth for the game's textures. Instead, the constraint is the compute pipeline: 2304 shading units, 144 TMUs, and 32 ROPs produce a pixel rate of 42.88 GPixel/s and a texture rate of 193.0 GTexel/s.

The measured benchmark scores for the GPU show a mixed profile. The PassMark G3D score is 8813, while the DirectX 11 score is 60, DirectX 12 is 43, and DirectX 9 is 124. The Geekbench Vulkan score of 45173 and OpenCL score of 37453 indicate the card performs better in compute-oriented workloads than in rasterization. The 3DMark Steel Nomad DX12 score of 1005 is low, reflecting the card's age relative to modern titles.

In Rust specifically, the GPU's role is clear from the resolution scaling. At 1080p, the card can sustain 72.5 FPS at Low settings, but this drops to 43.1 FPS at High and 29.8 FPS at Ultra. The 42.7 FPS gap between Low and Ultra at 1080p demonstrates that the card's shading units are heavily taxed by Rust's quality settings. At 4K, the same settings produce only 32.7 FPS at Low and 13.3 FPS at Ultra, confirming that the GPU is the sole bottleneck—the CPU's 4.30 GHz boost clock is more than adequate to feed the card at these frame rates.

The launch MSRP for this GPU was 229 USD, and it is now end-of-life, with the Vega architecture as its successor. The card's 185 W TDP and 450 W suggested PSU requirement are modest by today's standards, but its performance tier places it alongside the GTX 950 and GTX 570, which is insufficient for modern survival games at high resolutions. For Rust, the RX 580 is serviceable only at 1080p with reduced settings, and even then, the Ultra preset falls below 30 FPS.