Rust

The AMD Ryzen 9 8945HX paired with the NVIDIA GeForce RTX 4070 Mobile presents a balanced mobile platform for Rust, a survival title known for its demanding simulation and rendering loads. Measured data from the FACT PACK shows this combination can handle the game across a range of resolutions, with the playable threshold set at 60 FPS. The following analysis breaks down the performance characteristics, focusing on the exact frame rates achieved at various settings and the relative roles of the CPU and GPU in determining overall output.

Best Settings per Resolution

At 3840x2160, the most demanding preset that maintains an average of at least 60 FPS is Low, which delivers an average of 66 FPS. The data shows that stepping up to Medium drops the average to 44 FPS, making it unsuitable for the 60 FPS target. High settings at this resolution yield an average of 38 FPS, while Ultra falls to 29 FPS. Therefore, 4K gaming is only viable with the lowest visual fidelity preset.

Moving to 2560x1440, the best playable setting is High, with a measured average of 64 FPS. This is a marginal but clear pass over the 60 FPS threshold. The Medium preset runs at 75 FPS, and Low at 112 FPS, but High offers the highest visual quality that still clears the bar. The Ultra preset at this resolution averages 48 FPS, which fails to meet the playability criterion.

At 1920x1080, the combination is fully capable, with the Ultra preset achieving an average of 70 FPS. This is the most demanding setting tested and it remains above the 60 FPS threshold. For context, High settings run at 92 FPS, Medium at 109 FPS, and Low at 163 FPS, but the Ultra preset is the optimal choice for maximum fidelity without sacrificing playability.

CPU and GPU Roles

The benchmark data reveals a clear shift in component importance depending on the resolution. At 1920x1080, the CPU’s strength is more apparent. The jump from Low (163 FPS) to Ultra (70 FPS) shows a 57% reduction in frame rate, which is a significant scaling cost but still leaves headroom. This suggests the Ryzen 9 8945HX, with its 16 cores and 32 threads, is capable of feeding the GPU adequately at lower resolutions where the GPU is less saturated.

At 2560x1440, the GPU begins to take a more dominant role. The performance gap between Low (112 FPS) and High (64 FPS) is a 43% drop, and the Ultra preset (48 FPS) falls below the threshold. This indicates that the RTX 4070 Mobile’s pixel throughput is becoming a limiting factor, as the resolution increase raises the shading and fill-rate demands. The CPU still provides sufficient headroom, as evidenced by the playable High preset.

At 3840x2160, the GPU is the primary bottleneck. The difference between Low (66 FPS) and Medium (44 FPS) is a 33% decrease, highlighting how quickly the GPU’s resources are consumed at 4K. The CPU’s role diminishes further, as the frame rates are largely dictated by the RTX 4070 Mobile’s ability to process the higher pixel count. The data shows that no preset above Low can maintain 60 FPS, confirming the GPU-bound nature of this scenario.

Measured FPS Breakdown

3840x2160: At this 4K resolution, the measured results are as follows. Low settings produce an average of 66 FPS, with no min or max values recorded. Medium settings yield an average of 44 FPS, with a minimum of 38 FPS and a maximum of 51 FPS. High settings drop to an average of 38 FPS, and Ultra settings average 29 FPS. The spread between Low and Medium shows a 22 FPS drop, which is a substantial penalty for the visual upgrade.

2560x1440: At 1440p, the performance is more flexible. Low settings average 112 FPS, providing a very smooth experience. Medium settings average 75 FPS, with a minimum of 64 FPS and a maximum of 87 FPS, meaning the frame rate occasionally dips near the playability threshold but stays above it on average. High settings average 64 FPS, which is just above the 60 FPS line, while Ultra settings average 48 FPS. The Medium preset’s min FPS of 64 is notable, as it shows the combination can hold close to the target even in demanding scenes.

1920x1080: At 1080p, the data shows the highest performance levels. Low settings average 163 FPS, which is an excellent result for competitive play. Medium settings average 109 FPS, with a minimum of 93 FPS and a maximum of 126 FPS, indicating consistent performance. High settings average 92 FPS, and Ultra settings average 70 FPS. The Ultra preset’s average is 49% lower than Low, but the absolute value remains well above the playable threshold, making this resolution the sweet spot for maxing out the game’s visuals.

FAQ

Q: Can this PC run Rust at 4K with playable frame rates?

A: Yes, but only on Low settings. The measured average FPS at 3840x2160 with Low settings is 66, which clears the 60 FPS threshold. Medium settings drop to 44 FPS, so higher presets are not playable at this resolution.

Q: What is the highest quality preset that maintains 60 FPS at 2560x1440?

A: High settings are the best option, with a measured average of 64 FPS. Medium settings run at 75 FPS, but High provides better visuals while still staying above the 60 FPS threshold. Ultra settings fall short at 48 FPS.

Q: Is the Ultra preset playable at 1920x1080?

A: Yes, the Ultra preset at 1920x1080 averages 70 FPS, which is above the 60 FPS playable threshold. The data confirms that this is the most demanding setting tested at this resolution and it remains playable.

Q: How does the frame rate scale between Low and Ultra settings at 1080p?

A: At 1920x1080, Low settings average 163 FPS, while Ultra settings average 70 FPS. This represents a 57% reduction in average frame rate when moving from the lowest to the highest preset, showing the significant impact of graphical fidelity on performance.

Q: What is the most demanding setting that can be used at 2560x1440?

A: High settings are the most demanding preset that achieves a playable average of 64 FPS. The next step up, Ultra, only reaches 48 FPS, which fails to meet the 60 FPS playability criterion.

Q: Does the game ever drop below 60 FPS at Medium settings in 1440p?

A: The minimum recorded FPS at 2560x1440 with Medium settings is 64, which is above the 60 FPS threshold. The average is 75 FPS, indicating that the combination maintains playable performance even in the worst-case measured scenario.

How This Combo Ranks

In the benchmark database, this AMD Ryzen 9 8945HX and NVIDIA GeForce RTX 4070 Mobile combination ranks 2039 out of 3723 tested combos for Rust. This places it in the 55th percentile, meaning it outperforms a majority of systems tested for this game. The rank reflects a balanced setup that is capable of running the game at playable settings across all tested resolutions, albeit with limitations at 4K. This mid-pack positioning is consistent with the measured data, which shows strong 1080p performance and adequate 1440p performance, but a clear drop-off at 4K that limits preset choices.

The Verdict

The data indicates that this PC is a capable machine for Rust, with the playability verdict depending heavily on the target resolution. At 3840x2160, the system can run the game, but only on Low settings, which average 66 FPS. This is a pass, but a narrow one. At 2560x1440, the system is much more comfortable, with High settings averaging 64 FPS, and Low and Medium also clearing the 60 FPS threshold. At 1920x1080, the system is fully capable, with all presets including Ultra averaging above 60 FPS, with the Ultra preset hitting 70 FPS. Overall, the combination is suitable for gamers who prioritize frame rate at 1440p or want to max out the game at 1080p. For 4K gaming, users will need to accept significant compromises on visual quality to maintain playability.

Similar Performance Alternatives

Looking at the CPU’s nearest rivals, the Intel Core Ultra 9 285HX has an average benchmark score of 76155, which is 0.1% higher than the Ryzen 9 8945HX’s score. This indicates nearly identical compute performance, making it a very close substitute in terms of CPU-bound scenarios. The AMD Ryzen 9 9950X3D scores 75779, a 0.6% difference, offering similar performance. On the other end, the AMD EPYC Embedded 8224P and AMD Ryzen Threadripper PRO 9945WX score 76492 and 76513 respectively, showing differences of -0.4%, which are negligible in practical gaming terms.

For the GPU, the AMD Radeon RX 6700 XT has an average score of 27425, which is exactly 0% different from the RTX 4070 Mobile’s score. This suggests that in GPU-bound situations, particularly at higher resolutions like 4K, the RX 6700 XT would behave very similarly. The NVIDIA GeForce RTX 3090 scores 27565, a -0.5% difference, indicating comparable raw graphics performance, though the RTX 4070 Mobile is a more power-efficient mobile part. The NVIDIA RTX PRO 4000 Blackwell scores 27135, a 1.1% difference, and the AMD Radeon Pro Vega 20 scores 27839, a -1.5% difference, both falling within a narrow performance band that would yield similar frame rates in Rust.