Rust

Resolution Scaling

The measured FPS data for Rust across three resolutions reveals a pronounced scaling pattern that clearly identifies the GPU as the primary performance limiter at higher settings, while the CPU begins to assert influence at lower settings and 1080p. At 4K Ultra, the AMD Radeon RX 9070 delivers 36 FPS, and dropping to 4K Low raises this to 88.9 FPS—a 2.47x improvement purely from setting changes. This dramatic spread indicates that the GPU’s render workload dominates at 4K, as the Ryzen 5 7600X has ample headroom to feed frames at this resolution.

Moving from 4K to 1440p, the scaling pattern shifts. At High settings, 4K yields 48.1 FPS while 1440p produces 85.5 FPS—a 1.78x increase—which is less than the theoretical pixel-count difference of 2.25x. This suggests that at 1440p, the CPU’s single-thread performance begins to moderate the frame rate, preventing the full pixel-scaling benefit. The same trend appears at Low settings: 1440p Low hits 145.1 FPS versus 88.9 FPS at 4K Low, a 1.63x uplift, again below the pixel ratio.

The 1080p results reinforce the CPU-bound conclusion. At 1080p Low, the combo reaches 212.2 FPS, while 1080p High produces 120.9 FPS and 1080p Ultra drops to 91.3 FPS. The gap between 1440p Low (145.1 FPS) and 1080p Low (212.2 FPS) is a 1.46x improvement, far below the 2.25x pixel-count expectation. This compression indicates that the Ryzen 5 7600X’s 6 cores and 12 threads, running at a base clock of 4.70 GHz and boost of 5.30 GHz, are approaching their frame-generation ceiling at lower resolutions. The data shows a clear inflection point: below 1440p with Low settings, the CPU’s per-core throughput becomes the bottleneck, while at 4K and at Medium-to-Ultra settings, the RX 9070’s rasterization load governs performance.

FAQ

Q: What is the average FPS at 1080p with High settings for this CPU-GPU combo in Rust?

A: The measured average FPS at 1920x1080 with High settings is 120.9 FPS. This sits between the Medium result of 142.5 FPS and the Ultra result of 91.3 FPS, showing a 31.2 FPS drop from Medium to High and a 29.6 FPS drop from High to Ultra.

Q: How does the RX 9070's VRAM capacity influence Rust at 4K?

A: The RX 9070 carries 16 GB of GDDR6 memory on a 256-bit bus with 644.6 GB/s bandwidth. At 4K Ultra, the combo produces 36 FPS, and at 4K High it reaches 48.1 FPS. The 16 GB capacity is sufficient for Rust’s asset streaming at 4K, as the FPS differences between settings are primarily driven by shader complexity and draw calls rather than memory capacity limits, given the bandwidth headroom.

Q: Is the Ryzen 5 7600X a bottleneck for the RX 9070 in Rust?

A: At 1080p Low, the combo hits 212.2 FPS, but at 1440p Low it drops to 145.1 FPS—a 67.1 FPS reduction that is smaller than the pixel-count scaling would predict. This indicates the CPU’s 6 cores and 12 threads, with a boost clock of 5.30 GHz, limit frame generation at lower resolutions. At 4K Low (88.9 FPS) and above, the GPU becomes the limiting factor.

Q: What is the percentile ranking of this CPU and GPU combination in Rust?

A: The combo ranks 497 out of 1717 tested combinations in Rust, placing it in the top 29% of all configurations. The CPU alone has a percentile of 83 versus all CPUs, while the GPU has a percentile of 79 versus all GPUs, indicating balanced performance but not top-tier placement.

Q: How does the RX 9070's clock speed affect 4K Ultra performance?

A: The RX 9070 has a base clock of 1330 MHz, a game clock of 2070 MHz, and a boost clock of 2520 MHz. At 4K Ultra, the combo delivers 36 FPS. The boost clock is 1.9x the base clock, but the 4K Ultra workload still results in sub-60 FPS, showing that even at maximum boost, the GPU’s 3584 shading units cannot sustain high frame rates at this extreme setting.

Q: What is the difference in FPS between 4K Low and 1080p Ultra?

A: 4K Low produces 88.9 FPS, while 1080p Ultra produces 91.3 FPS—a difference of only 2.4 FPS. This near-parity is striking because 4K has 4x the pixels of 1080p, yet the Low preset’s reduced shading load at 4K nearly matches the Ultra preset’s higher per-pixel cost at 1080p.

GPU Role

The AMD Radeon RX 9070’s specifications directly shape Rust’s performance profile. Its 16 GB of GDDR6 memory, operating at 2518 MHz (20.1 Gbps effective) across a 256-bit bus, delivers 644.6 GB/s of bandwidth. This memory subsystem is critical for Rust’s large, procedurally generated maps and frequent texture streaming. The data shows that at 4K, the GPU’s memory bandwidth is sufficient to avoid severe stuttering, as the average FPS at 4K Medium (57.3) and 4K High (48.1) remain consistent with the increasing shading load rather than collapsing due to bandwidth exhaustion.

The GPU’s compute resources—3584 shading units, 224 texture mapping units, and 128 render output units—drive the setting-based scaling. At 1440p, moving from Low (145.1 FPS) to Medium (98 FPS) costs 47.1 FPS, while Medium to High (85.5 FPS) costs another 12.5 FPS. This nonlinear drop indicates that the Medium preset activates additional shader work that disproportionately taxes the shading units. At 4K, the same progression from Low (88.9) to Medium (57.3) costs 31.6 FPS, and Medium to High (48.1) costs 9.2 FPS, showing a similar pattern but with a lower absolute baseline due to pixel fill rate demands.

The RX 9070’s boost clock of 2520 MHz, combined with its 128 ROPs, yields a pixel rate of 322.6 GPixel/s. At 4K Ultra, the combo achieves 36 FPS, which corresponds to approximately 132.7 million pixels rendered per second (assuming 3840x2160 resolution). This is well below the theoretical pixel rate, indicating that the Ultra preset’s additional effects (likely ambient occlusion, shadows, and post-processing) create a bottleneck in the shader pipeline rather than the ROP stage. The GPU’s FP32 throughput of 36.13 TFLOPS is the more relevant metric for these compute-heavy effects, and the 4K Ultra result suggests the shader units are saturated.

Comparing to the nearest rivals, the RX 9070’s average benchmark score of 34780 places it just above the NVIDIA Quadro GV100 (34677, deltaPct 0.3) and just below the NVIDIA A2 (34866, deltaPct -0.2). This positioning indicates that in synthetic tests, the RX 9070 is roughly equivalent to these professional-grade cards, but in Rust specifically, the measured FPS at 4K Ultra (36) and 4K High (48.1) show that real-world gaming workloads might diverge from synthetic averages due to driver optimizations and game-specific rendering paths.

Measured FPS Breakdown

At 1920x1080, the full settings sweep reveals a wide range. Low settings produce 212.2 FPS, Medium drops to 142.5 FPS, High yields 120.9 FPS, and Ultra bottoms out at 91.3 FPS. The step from Low to Medium is the largest single drop at 69.7 FPS, suggesting that Medium enables significant texture filtering and shadow improvements. High to Ultra costs 29.6 FPS, which is a 24.5% reduction from High’s 120.9 FPS. The 1080p results show that even at Ultra, the combo exceeds 90 FPS, making this resolution viable for high-refresh-rate displays.

At 2560x1440, the scaling becomes more pronounced. Low achieves 145.1 FPS, Medium drops to 98 FPS, High reaches 85.5 FPS, and Ultra falls to 62.8 FPS. The gap between Low and Medium here is 47.1 FPS, which is proportionally similar to 1080p’s Low-to-Medium drop of 69.7 FPS. However, the Ultra setting at 1440p (62.8 FPS) is only 3.3 FPS above the 60 FPS threshold, indicating that 1440p Ultra is marginal for smooth gameplay. The High setting at 85.5 FPS offers a 22.7 FPS advantage over Ultra, making it the more practical choice for 1440p.

At 3840x2160, the GPU is clearly the limiting component. Low produces 88.9 FPS, Medium 57.3 FPS, High 48.1 FPS, and Ultra 36 FPS. The monotonic decrease from Low to Ultra is consistent, with each step costing roughly 9-31 FPS. The jump from Low to Medium costs 31.6 FPS—the largest single-step decline across all resolutions—indicating that Medium’s additional texture and lighting calculations are particularly expensive at 4K pixel counts. Ultra at 36 FPS is below the 60 FPS playability threshold, while even High at 48.1 FPS falls short. Only Low at 88.9 FPS provides a fluid experience at 4K, and even then, it is 31.1 FPS behind the 1080p Low result.

CPU Role

The AMD Ryzen 5 7600X, with 6 cores and 12 threads based on Zen 4 architecture, plays a nuanced role in Rust. Its single-core benchmark results are strong: Cinebench R23 single-core scores 3406, and Geekbench single-core reaches 2892. These scores correlate with Rust’s known sensitivity to single-threaded performance for game logic and draw call submission. The CPU’s boost clock of 5.30 GHz is critical for maintaining high FPS at lower resolutions, as evidenced by the 1080p Low result of 212.2 FPS.

The multi-threaded capabilities are less impactful for Rust’s frame generation. The CPU’s Cinebench R23 multi-core score of 24128 and Passmark multi-thread score of 28390 show substantial parallel throughput, but the measured FPS at 4K Low (88.9) versus 1080p Low (212.2) demonstrates that the GPU becomes the bottleneck as pixel count rises. The CPU’s 32 MB of shared L3 cache helps with Rust’s asset lookup patterns, but the 83.2 GB/s memory bandwidth (dual-channel DDR5) could be a limiting factor when the CPU is feeding frames at 212 FPS.

The CPU’s percentile of 83 versus all CPUs, with an average benchmark score of 26272, places it near the AMD Ryzen 7 PRO 6850U (26262, deltaPct 0) and AMD Ryzen 7 7735U (26305, deltaPct -0.1). These rivals are mobile or low-power chips, yet they achieve similar synthetic scores, suggesting the 7600X’s advantage in Rust comes from its high boost clock rather than raw multi-thread throughput. The nearest desktop rival, the AMD Ryzen 7 5700X, scores 26214 (deltaPct 0.2), effectively tying the 7600X in synthetic benchmarks.

In Rust specifically, the CPU’s role is most evident at 1080p Low, where the 212.2 FPS result likely approaches the CPU’s frame-generation limit. The 1440p Low result of 145.1 FPS, which is only 67.1 FPS lower despite a 1.78x pixel increase, suggests that the CPU is still partially constraining performance at 1440p Low. At 4K Low (88.9 FPS), the GPU resume control, as the 2.25x pixel increase from 1080p yields only a 123.3 FPS drop—a ratio that implies the GPU’s pixel fill rate is now the dominant factor. The 7600X’s 105 W TDP and 5.30 GHz boost clock provide sufficient per-core performance to avoid being the primary bottleneck at 4K, but at 1080p, the CPU’s 6 cores limit the maximum achievable frame rate below what the RX 9070 could theoretically deliver.