Rust

Rust is a demanding survival title where frame rates hinge heavily on both processor and graphics hardware. For the AMD Ryzen 5 7400F paired with the AMD Radeon RX 6750 XT, the measured data shows a combination that is capable of strong 1080p performance but begins to strain at higher resolutions. The benchmark results indicate a system that is well-balanced at 1920x1080, where the CPU and GPU work in concert to deliver high frame rates, but the GPU becomes the primary limiting factor as the resolution increases to 2560x1440 and beyond.

Resolution Scaling

The measured FPS data reveals a clear and expected pattern of performance degradation as resolution increases. At 1920x1080 with Low settings, the system achieves an average of 173 FPS, which drops to 119 FPS at 2560x1440 and further to 70 FPS at 3840x2160. This represents a 31% drop from 1080p to 1440p and a 59% drop from 1080p to 4K. The scaling is consistent across all settings presets, indicating that the GPU's rendering load is the dominant factor in frame rate variance.

At High settings, the frame rates are 98 FPS at 1080p, 68 FPS at 1440p, and 40 FPS at 4K. The percentage drop from 1080p to 1440p is 31%, identical to the Low setting drop, while the drop to 4K is 59%. This uniformity suggests that the game's resolution scaling is linear, with each step up in pixel count imposing a similar relative cost. The 4K results across all settings are particularly telling: even at Low settings, the average FPS is only 70, which is below the 75 FPS achieved at 1080p Ultra.

The data points to the GPU as the limiting component at higher resolutions. The RX 6750 XT, with its 12 GB of GDDR6 memory and 192-bit bus, provides 432.0 GB/s of bandwidth. At 4K, the sheer pixel throughput demand overwhelms the GPU's compute capabilities, as evidenced by the steep FPS decline. The CPU, on the other hand, appears to have ample headroom at 1080p, where the system reaches 173 FPS on Low settings, suggesting that the Ryzen 5 7400F can feed the GPU efficiently at lower resolutions.

For players targeting 4K, the data shows that only Low settings provide a playable experience, with an average of 70 FPS. Medium settings at 4K drop to 47 FPS, which is borderline for smooth gameplay, while High and Ultra fall to 40 FPS and 30 FPS, respectively. The 1440p results are more balanced, with Medium settings delivering 80 FPS and High delivering 68 FPS, making this resolution the sweet spot for visual quality and performance with this hardware combination.

CPU Role

The AMD Ryzen 5 7400F is a 6-core, 12-thread processor based on the Zen 4 architecture, codenamed Raphael, built on a 5 nm process. It has a base clock of 3.70 GHz and a boost clock of 4.70 GHz, with 32 MB of shared L3 cache. In Rust, which is known to be CPU-intensive due to its complex world simulation and physics, this processor's capabilities are directly relevant to the measured frame rates.

The CPU's benchmark scores show strong single-threaded and multi-threaded performance. In Cinebench R23, it scores 3072 points in single-core and 21765 points in multi-core. The PassMark single-thread score is 3689, and the multithread score is 25645. These numbers indicate that the Ryzen 5 7400F has the processing power to handle Rust's demanding simulation tasks, particularly at lower resolutions where the GPU is not the bottleneck.

At 1080p with Low settings, the system achieves 173 FPS, which is a clear indication that the CPU is capable of driving high frame rates. However, the data shows diminishing returns as resolution increases. At 4K Low, the frame rate drops to 70 FPS, which is more than a 50% reduction. This suggests that while the CPU is not the primary limiting factor at 4K, its performance still impacts the overall frame rate, as the game's simulation must be updated regardless of resolution.

The Ryzen 5 7400F's percentile rank of 83 among all CPUs indicates that it performs better than the majority of processors on the market. Compared to its nearest rivals, it is nearly identical in average benchmark score: the Intel Core i5-14600T scores 0.1% higher, while the AMD Ryzen 7 PRO 6850H scores 0.2% lower. This puts the 7400F in a competitive position for gaming workloads, where its 6 cores and 12 threads are sufficient for most titles, including Rust.

The processor's memory support for DDR5 with a dual-channel bus and 83.2 GB/s bandwidth is another factor in its gaming performance. Rust benefits from fast memory access due to its large, persistent world and frequent entity updates. The 32 MB of L3 cache also helps reduce memory latency, which can improve frame times in CPU-bound scenarios. The data suggests that at 1080p, the CPU is well-utilized, as evidenced by the high frame rates across all settings, but it is not the sole determinant of performance at higher resolutions.

GPU Role

The AMD Radeon RX 6750 XT is a RDNA 2.0 architecture GPU, based on the Navi 22 chip, manufactured on a 7 nm process. It features 2560 shading units, 160 texture mapping units, and 64 render output units. The GPU has a base clock of 2150 MHz, a game clock of 2495 MHz, and a boost clock of 2600 MHz. It comes with 12 GB of GDDR6 memory on a 192-bit bus, providing a bandwidth of 432.0 GB/s.

The GPU's benchmark scores place it in the 71st percentile of all GPUs. In 3DMark Steel Nomad DX12, it scores 2548 points, and in PassMark G3D, it scores 20700 points. The Geekbench Vulkan score is 98089, while the OpenCL score is 16360. These results indicate a mid-to-high-range graphics card that is capable of handling modern games at 1080p and 1440p, but its performance at 4K is limited, as shown in the measured FPS data.

The measured data shows that the RX 6750 XT's performance in Rust is strongly tied to resolution. At 1080p, it delivers 173 FPS on Low settings and 75 FPS on Ultra, which are both respectable numbers. However, at 4K, the frame rates drop significantly: 70 FPS on Low, 47 FPS on Medium, 40 FPS on High, and 30 FPS on Ultra. This pattern clearly identifies the GPU as the bottleneck at 4K, as the pixel fill rate and memory bandwidth are insufficient for the higher resolution.

The GPU's 12 GB of VRAM is a notable asset for Rust, which can consume significant memory due to its large maps and textures. The 432.0 GB/s memory bandwidth is also beneficial for streaming textures and geometry. However, at 4K, the GPU's raw compute power (13.31 TFLOPS FP32) is not enough to maintain high frame rates, as evidenced by the 30 FPS average on Ultra settings. The pixel rate of 166.4 GPixel/s and texture rate of 416.0 GTexel/s are adequate for 1080p and 1440p but fall short at 4K.

The GPU's nearest rivals in terms of average benchmark score are the AMD Radeon R9 M395X, which scores 0.5% higher, and the NVIDIA GeForce RTX 3080 Ti Mobile, which scores 1.1% higher. This indicates that the RX 6750 XT is positioned in a competitive segment, but its desktop-class performance is what matters for gaming. In Rust, the data shows that the GPU is the primary determinant of frame rates at 1440p and 4K, while the CPU plays a more significant role at 1080p.

FAQ

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

A: Based on the measured data, 1920x1080 is the best resolution for achieving high frame rates. The system reaches 173 FPS on Low settings and 98 FPS on High settings at 1080p, which are both smooth experiences. At 2560x1440, the frame rates are still playable, with 119 FPS on Low and 68 FPS on High.

Q: Can this system handle 4K gaming in Rust?

A: Yes, but with limitations. At 4K, the system achieves 70 FPS on Low settings, which is playable. However, on Medium settings, the frame rate drops to 47 FPS, and on High and Ultra, it falls to 40 FPS and 30 FPS, respectively. This indicates that 4K is only viable with lower graphics presets.

Q: How does the CPU compare to its rivals in terms of performance?

A: The AMD Ryzen 5 7400F has an average benchmark score of 32750, which is within 0.3% of its nearest rivals. The Intel Core i5-14600T scores 0.1% higher, while the AMD Ryzen 7 PRO 6850H scores 0.2% lower. This shows that the 7400F is highly competitive in its performance class.

Q: What is the GPU's percentile rank among all GPUs?

A: The AMD Radeon RX 6750 XT ranks in the 71st percentile of all GPUs, indicating that it performs better than 71% of graphics cards in the benchmark database. Its average benchmark score is 26011, which places it slightly above the AMD Radeon R9 M395X and AMD FirePro W7100.

Q: How much VRAM does the GPU have, and is it sufficient for Rust?

A: The GPU has 12 GB of GDDR6 memory. This is sufficient for Rust at all tested settings and resolutions, as the game does not appear to be VRAM-limited in the measured data. The memory bandwidth of 432.0 GB/s also helps with texture streaming.

Q: What is the frame rate difference between Low and Ultra settings at 1080p?

A: At 1920x1080, the difference is significant. The system achieves 173 FPS on Low settings and 75 FPS on Ultra settings, representing a 57% decrease in frame rate when moving from Low to Ultra. This indicates that Ultra settings impose a substantial GPU load.

Settings Recommendations

Based on the measured FPS data, the best experience for this hardware combination depends on the target resolution and desired frame rate. For players prioritizing high frame rates at 1920x1080, the Low preset delivers 173 FPS, which is well above the threshold for competitive play. However, for a more visually appealing experience, the High preset at 98 FPS offers a good balance, providing a 43% improvement in frame rate over Ultra while still maintaining a smooth 60+ FPS.

At 2560x1440, the Medium preset is recommended, as it delivers 80 FPS with a minimum of 68 FPS. This provides a smooth experience while offering better visual fidelity than Low, which achieves 119 FPS but at a significant visual cost. The High preset at 68 FPS is also viable for players who prefer higher settings, but it is closer to the edge of what is considered smooth for fast-paced gameplay.

For 4K gaming, the data suggests that only the Low preset is recommended, as it achieves 70 FPS, which is above the 60 FPS threshold for smooth play. The Medium preset at 47 FPS and High preset at 40 FPS are playable but may exhibit noticeable stuttering or frame drops in demanding scenes. The Ultra preset at 30 FPS is not recommended for 4K, as it falls below the standard for acceptable performance.

The measured data shows that the Medium preset offers the most consistent performance across all resolutions, with a minimum FPS of 99 at 1080p, 68 at 1440p, and 40 at 4K. This preset provides a balance between visual quality and performance that is well-suited for this hardware. Players who prioritize frame rate over visuals should opt for Low settings, while those who want the best graphics should consider High settings at 1080p or 1440p, accepting lower frame rates.

Measured FPS Breakdown

The measured FPS data for Rust with the AMD Ryzen 5 7400F and AMD Radeon RX 6750 XT is detailed below, organized by resolution and settings preset.

At 1920x1080, the system delivers its highest frame rates. On Low settings, the average FPS is 173. Medium settings produce an average of 116 FPS, with a minimum of 99 and a maximum of 134. High settings yield an average of 98 FPS. Ultra settings reduce the average to 75 FPS. This shows a clear progression, with Low providing more than double the frame rate of Ultra.

At 2560x1440, the frame rates decrease but remain playable. Low settings achieve 119 FPS on average. Medium settings produce 80 FPS, with a minimum of 68 and a maximum of 92. High settings result in 68 FPS. Ultra settings drop to 51 FPS. The drop from 1080p to 1440p is consistent, with each preset seeing a roughly 30% reduction in average FPS.

At 3840x2160, the system's performance is significantly limited. Low settings deliver 70 FPS on average. Medium settings produce 47 FPS, with a minimum of 40 and a maximum of 54. High settings result in 40 FPS. Ultra settings drop to 30 FPS. The 4K results show that the GPU is the primary bottleneck, as even the lowest settings cannot maintain high frame rates.

The data shows that the system's performance scales predictably with resolution and settings. The combination of the Ryzen 5 7400F and RX 6750 XT is well-matched for 1080p gaming, where it can exceed 170 FPS on lower settings. At 1440p, it provides a good experience with Medium to High settings. At 4K, it is only suitable for Low settings, where it can still achieve a playable 70 FPS.