Rust

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

The measured frames per second across resolutions tell a clear story about where the bottleneck sits in this AMD pairing. At 1920x1080 with Low settings, the system produces 64 FPS, but stepping up to 2560x1440 drops that to 48.1 FPS, and 3840x2160 falls to 27.8 FPS. That is a 56.6% reduction from 1080p to 4K at Low settings, indicating the rendering load scales heavily with pixel count.

The pattern intensifies at higher quality presets. High settings show 35.6 FPS at 1080p, 26.1 FPS at 1440p, and 12.8 FPS at 4K. Ultra settings are even more punishing: 27.1 FPS at 1080p, 21.6 FPS at 1440p, and 14 FPS at 4K. The drop from 1440p to 4K at Ultra is a 35.2% reduction, which suggests the GPU is saturated by the sheer pixel throughput required at 4K.

What does this imply about the limiting component? At 1080p Low, the 64 FPS figure is respectable for a game like Rust, which is known for CPU-heavy simulation. However, the rapid collapse as resolution climbs points to the graphics card — the AMD Radeon RX 570 with its 4 GB GDDR5 memory and 224.0 GB/s bandwidth — becoming the primary constraint. The CPU, a 6-core, 12-thread AMD Ryzen 5 5600X with a boost clock of 4.60 GHz, has ample headroom to feed frames at lower resolutions, but the GPU cannot keep pace once pixel counts rise.

The data suggests a balanced system at 1080p, transitioning to a GPU-bound scenario at 1440p and severely GPU-limited at 4K. The 4K numbers are uniformly below playable thresholds — even Low settings only achieve 27.8 FPS. This is not a configuration meant for 4K gaming, and the benchmark results confirm that expectation with hard numbers.

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

Examining the measured rows, the 1080p Low preset delivers 64 FPS, which is the only configuration in the entire dataset to cross the 60 FPS threshold. This makes it the clear choice for competitive or smooth gameplay. Medium at 1080p offers 46.8 FPS, a 26.9% drop from Low, while High falls to 35.6 FPS and Ultra bottom out at 27.1 FPS.

At 1440p, the situation is more constrained. Low settings produce 48.1 FPS, which is playable but not silky smooth. Medium drops to 30.1 FPS, and High falls to 26.1 FPS. Ultra at 1440p is 21.6 FPS, which would feel sluggish in a survival game where quick reactions matter.

The data suggests that 1080p Low is the only preset that provides a consistently fluid experience. The jump from Low to Medium at 1080p costs 17.2 FPS, which is a substantial penalty for what is typically a modest visual upgrade. For players who prioritize frame rate over fidelity, the Low preset at 1080p is the recommended choice based on the measured rows.

At 1440p, Low is the only option that stays above 40 FPS. The 48.1 FPS figure is acceptable for a game like Rust, where the pace is more methodical than twitch-based. However, the 18 FPS gap between Low and Medium at this resolution highlights how sensitive the RX 570 is to increased graphical workload.

For those who insist on higher quality, the 1080p Medium preset at 46.8 FPS offers a reasonable compromise — it provides a visual upgrade over Low while maintaining a frame rate that is still above 45 FPS. Anything beyond Medium at any resolution results in average FPS below 40, which is generally considered the lower bound for comfortable play in a survival title.

How This Combo Ranks — use comboRankInGame vs other tested combos

This specific combination of AMD Ryzen 5 5600X and AMD Radeon RX 570 ranks 1642 out of 1717 tested combos in Rust. That places it in the bottom 4.4% of all configurations measured, which is a sobering statistic for this pairing. The rank reflects the GPU's age and limited memory bandwidth, not the CPU's capability.

The CPU alone performs respectably in synthetic benchmarks — the Ryzen 5 5600X scores 78th percentile against all CPUs, with an average benchmark score of 20680. Its nearest rival, the AMD Ryzen 5 5600GT, scores 20740, a delta of -0.3%, meaning the 5600X is essentially tied with it. The Intel Core i7-10700 is also within 0.3% of the 5600X's average score, indicating the CPU is not the weak link.

The GPU tells a different story. The RX 570 sits in the 74th percentile against all GPUs, with an average benchmark score of 30158. Its nearest rival, the NVIDIA GeForce RTX 5060, scores 30109, a delta of only 0.2%. This is curious — the RX 570 is a much older card, yet its average benchmark score is nearly identical to much newer hardware. This could be due to the benchmark suite weighting, but the in-game results are unambiguous.

The rank of 1642 out of 1717 combos suggests that while the CPU has headroom, the GPU drags the entire system down in Rust. The measured FPS data confirms this: even at 1080p Low, the system only achieves 64 FPS, which is far from the triple-digit numbers that faster GPUs would produce. The combo rank reflects the reality that in a GPU-bound scenario like Rust at higher settings, the RX 570's limitations become the defining factor.

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

At 1920x1080, the four settings produce a clear hierarchy. Low yields 64 FPS, Medium drops to 46.8 FPS, High falls to 35.6 FPS, and Ultra bottoms out at 27.1 FPS. The spread from Low to Ultra is 36.9 FPS, showing that the GPU has a 2.36x performance range across quality presets at this resolution.

Moving to 2560x1440, the numbers compress. Low produces 48.1 FPS, Medium falls to 30.1 FPS, High drops to 26.1 FPS, and Ultra reaches 21.6 FPS. The spread narrows to 26.5 FPS, indicating that the GPU is becoming the limiting factor regardless of settings. The ratio from Low to Ultra at 1440p is 2.23x, slightly less than at 1080p.

At 3840x2160, the performance collapses. Low yields 27.8 FPS, Medium drops to 18.3 FPS, High falls to 12.8 FPS, and Ultra reaches just 14 FPS. Interestingly, High and Ultra are nearly identical, with only 1.2 FPS separating them. This suggests that at 4K, the GPU is so constrained that additional graphical features have minimal impact on the already low frame rates.

The scaling from 1080p to 1440p at Low settings shows a 15.9 FPS drop, or 24.8%. From 1440p to 4K at Low, the drop is 20.3 FPS, or 42.2%. This accelerating decline with resolution is typical of a GPU that is running out of memory bandwidth and pixel throughput. The 4 GB VRAM capacity may also be exceeded at 4K, causing additional overhead.

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

The AMD Radeon RX 570 features 4 GB of GDDR5 memory on a 256-bit bus, delivering 224.0 GB/s of bandwidth. Its base clock is 1168 MHz with a boost clock of 1244 MHz. The card has 2048 shading units, 128 texture mapping units, and 32 render output units. Its pixel rate is 39.81 GPixel/s, and texture rate is 159.2 GTexel/s, with FP32 performance of 5.095 TFLOPS.

In Rust, these specifications translate to the measured FPS data. The 4 GB VRAM is likely a limiting factor at higher resolutions and settings. Rust is known for its large textures and complex environments, which can exceed 4 GB of VRAM at 1440p or 4K with High or Ultra presets. When VRAM is exhausted, the GPU must swap data to system memory, causing stutters and reduced average FPS.

The boost clock of 1244 MHz is modest by modern standards, and the GCN 4.0 architecture from 2017 does not have the efficiency of newer designs. The 14 nm process node from GlobalFoundries means the card runs at 150 W TDP, which is relatively high for its performance level. The FP32 throughput of 5.095 TFLOPS is the raw compute capability, but in a game like Rust, memory bandwidth and pixel fill rate matter more.

The 224.0 GB/s bandwidth is the key figure for resolution scaling. At 4K, the GPU needs to move 8.3 million pixels per frame, and the memory bandwidth becomes the bottleneck. The measured 4K FPS numbers — 27.8 at Low, 18.3 at Medium, 12.8 at High — demonstrate that the card cannot sustain the data throughput required. The GPU's percentile rank of 74th against all GPUs masks its age; in a modern game like Rust, the architectural limitations are exposed.

FAQ

Q: What is the best resolution and settings combo for this system?

A: The measured data shows 1920x1080 at Low settings produces 64 FPS, the only configuration above 60 FPS. At 1440p, Low yields 48.1 FPS, and at 4K, Low drops to 27.8 FPS.

Q: How does the CPU compare to its nearest rivals?

A: The Ryzen 5 5600X has an average benchmark score of 20680, placing it 78th percentile among all CPUs. Its nearest rival, the AMD Ryzen 5 5600GT, scores 20740, a delta of -0.3%. The Intel Core i7-10700 scores 20746, also a -0.3% delta.

Q: Why does the combo rank so low in Rust?

A: The combo ranks 1642 out of 1717 tested combos in Rust. The GPU is the limiting factor, as evidenced by the rapid FPS drops when resolution increases. The CPU has sufficient headroom, but the RX 570 cannot keep up with the game's rendering demands.

Q: Is the GPU's VRAM sufficient for this game?

A: The RX 570 has 4 GB of GDDR5 memory. The measured data shows severe performance drops at 4K, with High settings at 12.8 FPS and Ultra at 14 FPS, suggesting VRAM capacity is likely exceeded at higher resolutions.

Q: What is the GPU's benchmark standing?

A: The RX 570 has an average benchmark score of 30158, placing it 74th percentile among all GPUs. Its nearest rival, the NVIDIA GeForce RTX 5060, scores 30109, a delta of 0.2%. The AMD Radeon RX 7700 XT scores 30097, also a 0.2% delta.

Q: How does the CPU's single-thread performance compare?

A: The Ryzen 5 5600X scores 2622 in Cinebench R23 single-core and 917 in 3DMark single-thread. Its Geekbench single-core score is 2111. These figures indicate strong single-thread performance, which is relevant for Rust's CPU-heavy simulation.

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

The AMD Ryzen 5 5600X has 6 cores and 12 threads, with a base clock of 3.70 GHz and boost clock of 4.60 GHz. It uses the Zen 3 architecture on a 7 nm process from TSMC, with 4,150 million transistors on a 74 mm² die. The L3 cache is 32 MB, and memory bandwidth is 51.2 GB/s over dual-channel DDR4.

In Rust, the CPU's role is significant because the game runs a complex simulation of the world, including player interactions, building structures, and environmental changes. The 6-core, 12-thread configuration is well-suited for this workload, and the boost clock of 4.60 GHz provides strong single-thread performance for the game's primary thread.

The Cinebench R23 multicore score of 18578 and single-core score of 2622 indicate a balanced processor. The 3DMark max-thread score of 5588 and single-thread score of 917 show consistent scaling across thread counts. These benchmarks suggest the CPU is not the bottleneck in Rust, as evidenced by the fact that at 1080p Low, the system reaches 64 FPS — a number that could be higher if the GPU were faster.

The CPU's percentile rank of 78th against all CPUs places it above the median, and its nearest rivals — the Ryzen 5 5600GT, Intel Core i7-10700, and Intel Core i5-12490F — are all within 0.5% of its average score. This indicates the 5600X is a mid-to-upper tier processor for gaming, capable of feeding a more powerful GPU than the RX 570.

The measured FPS data supports this: the 64 FPS at 1080p Low is likely CPU-limited to some degree, but the drop to 35.6 FPS at High settings shows the GPU taking over as the limiting factor. The CPU's 32 MB L3 cache helps with Rust's frequent memory accesses, and the 51.2 GB/s memory bandwidth is sufficient for the game's data needs. The 65 W TDP indicates efficient operation, allowing the CPU to maintain boost clocks without thermal throttling in most systems.