Rust

Rust presents a demanding workload that scales significantly with resolution, and the measured data for the Intel Core Ultra X9 388H paired with the NVIDIA GeForce RTX 5070 Mobile illustrates this clearly. At 1080p with Low settings, the combo achieves 161 FPS, but this drops to 111 FPS at 1440p and further to 65 FPS at 4K. This progression shows a frame rate reduction of roughly 31% from 1080p to 1440p, and another 41% from 1440p to 4K, indicating that the graphical load is the primary constraint as pixel count increases.

The scaling pattern becomes more pronounced when examining the High preset. At 1080p High, the average is 91 FPS, which falls to 63 FPS at 1440p, and then to 37 FPS at 4K. The drop from 1440p to 4K here is a 41% reduction, mirroring the Low preset's proportional decline. This consistent scaling across different presets suggests that the RTX 5070 Mobile's rendering pipeline is the limiting factor at higher resolutions, rather than the CPU. The GPU's 8 GB of GDDR7 memory and 128-bit bus width, delivering 384.0 GB/s of bandwidth, are likely saturated as the resolution increases, particularly with the more demanding visual effects enabled.

Resolution Scaling

The data shows that Rust's performance is heavily dependent on resolution, with the most significant impact seen between 1440p and 4K. For the Ultra preset, the average frame rate at 1080p is 69 FPS, dropping to 48 FPS at 1440p, and then to 28 FPS at 4K. This represents a 30% reduction from 1080p to 1440p, followed by a steeper 42% reduction from 1440p to 4K. The 4K Ultra result of 28 FPS is notably below the 60 FPS threshold typically considered smooth, indicating that this combination struggles with maximum settings at that resolution.

The Medium preset offers a middle ground, with 108 FPS at 1080p, 74 FPS at 1440p, and 44 FPS at 4K. The proportional drops here are similar to other presets, suggesting that the scaling is consistent regardless of the quality settings. This uniformity points to the GPU's raw throughput as the bottleneck, as the RTX 5070 Mobile's 13.13 TFLOPS of FP32 performance is being taxed increasingly as the pixel workload grows. The benchmark results indicate that the limiting component shifts from the CPU at lower resolutions to the GPU at higher ones.

CPU Role

The Intel Core Ultra X9 388H brings 16 cores and 16 threads to the table, with a base clock of 2.10 GHz and a boost clock of 5.10 GHz. This specification set is substantial for a mobile part, and the benchmark data shows it performs well in synthetic tests. The Cinebench R23 multi-core score of 18911 and single-core score of 2200.5 place it in the 88th percentile against all CPUs, indicating strong processing capability. In Rust, this CPU is likely providing ample headroom at 1080p, where the frame rates are higher and the CPU's role in game logic and physics is more pronounced.

However, the measured FPS data suggests that the CPU's influence diminishes as resolution increases. At 4K Ultra, the 28 FPS average is far below what the CPU could theoretically support, confirming that the GPU is the limiting factor. The CPU's nearest rival, the AMD Ryzen 5 7500X3D, has an average benchmark score of 44573, which is -0.2% different from the Core Ultra X9 388H's 44466, showing they are statistically equivalent in overall performance. This parity means that in CPU-bound scenarios, the 388H would perform similarly, but Rust's engine appears to be more GPU-limited at higher settings.

FAQ

Q: What frame rate can I expect at 1080p with High settings?

A: The measured average frame rate at 1920x1080 with High settings is 91 FPS. This is a playable level for most users, providing a smooth experience in typical gameplay scenarios.

Q: How does the 4K Ultra performance compare to 1080p Ultra?

A: At 4K Ultra, the average FPS drops to 28, which is a 59% reduction from the 69 FPS seen at 1080p Ultra. This indicates that the RTX 5070 Mobile cannot sustain high frame rates at maximum settings in 4K.

Q: Is the CPU or GPU more of a bottleneck in Rust?

A: The data shows that at 1080p Low, the average FPS is 161, which is likely CPU-limited. As resolution increases to 4K Low, the FPS drops to 65, indicating the GPU becomes the bottleneck due to the increased pixel workload.

Q: What is the best preset for a balance of quality and performance at 1440p?

A: At 2560x1440, the Medium preset delivers an average of 74 FPS, with a minimum of 63 FPS and maximum of 85 FPS. This provides a good balance, offering higher quality than Low while maintaining frame rates above 60 FPS.

Q: How does the RTX 5070 Mobile compare to its nearest GPU rivals?

A: The RTX 5070 Mobile has an average benchmark score of 29928, which is -0.1% compared to the NVIDIA GeForce RTX 3070 Ti's 29945. It is also 0.5% ahead of the RTX 2080 Ti and -0.6% behind the AMD Radeon RX 6800, showing it performs similarly to these desktop-class parts.

Q: Does the CPU's 16-thread configuration help in Rust?

A: The Core Ultra X9 388H's 16 threads, combined with a boost clock of 5.10 GHz, provide strong single-threaded performance, as evidenced by its Cinebench R23 single-core score of 2200.5. This helps maintain high frame rates at lower resolutions where CPU performance is more critical.

How This Combo Ranks

The combination of the Intel Core Ultra X9 388H and NVIDIA GeForce RTX 5070 Mobile ranks 2061 out of 3723 tested combos in Rust. This places it in the middle of the pack, indicating that while it is not a top-tier performer, it is far from the bottom. The rank suggests that many other combinations, likely featuring more powerful desktop GPUs or higher-end mobile parts, achieve better performance in this specific game. However, the data shows that this combo is capable of delivering playable frame rates at 1080p and 1440p with adjusted settings.

The ranking reflects the balance of the CPU and GPU. The CPU's 88th percentile standing against all CPUs is strong, but the GPU's 75th percentile against all GPUs is slightly lower. This imbalance means that in a game like Rust, which is demanding on both fronts, the GPU's relative weakness holds the combo back from higher rankings. The measured FPS data corroborates this, as the RTX 5070 Mobile's performance at 4K is particularly weak, dragging down the overall ranking.

Settings Recommendations

Based on the measured FPS data, the optimal settings for this combo depend on the target resolution and desired frame rate. At 1080p, the High preset at 91 FPS is recommended for a smooth experience with good visual quality. For users prioritizing higher refresh rates, the Low preset at 161 FPS offers maximum performance, though with reduced visual fidelity. The Medium preset at 108 FPS strikes a balance, providing a 19% improvement over High while maintaining acceptable quality.

At 1440p, the Medium preset is the best choice, delivering 74 FPS with a minimum of 63 FPS. This stays above the 60 FPS threshold and offers better visual quality than Low. The High preset at 63 FPS is also playable, but the lower minimum frame rate of the Medium preset (63 FPS) compared to High (no min data) suggests Medium is more consistent. At 4K, the Medium preset at 44 FPS is the only option that approaches playability, though it is below 60 FPS. The Low preset at 65 FPS is the only way to achieve smoother performance at 4K, but it sacrifices significant visual quality.

Measured FPS Breakdown

At 1920x1080, the measured average frame rates are 161 FPS for Low, 108 FPS for Medium, 91 FPS for High, and 69 FPS for Ultra. The Medium preset shows a minimum of 92 FPS and maximum of 124 FPS, indicating some variability but generally stable performance. The spread from Low to Ultra is 92 FPS, showing that settings have a large impact at this resolution.

At 2560x1440, the average frame rates drop to 111 FPS for Low, 74 FPS for Medium, 63 FPS for High, and 48 FPS for Ultra. The Medium preset's minimum of 63 FPS and maximum of 85 FPS show a tighter range than at 1080p, suggesting more consistent frame pacing. The reduction from 1080p to 1440p is 31% for Low, 31% for Medium, 31% for High, and 30% for Ultra, showing a uniform scaling.

At 3840x2160, the average frame rates are 65 FPS for Low, 44 FPS for Medium, 37 FPS for High, and 28 FPS for Ultra. The Medium preset has a minimum of 37 FPS and maximum of 50 FPS, which is a wider relative spread than at lower resolutions, indicating less stability. The drop from 1440p to 4K is 41% for Low, 41% for Medium, 41% for High, and 42% for Ultra, showing that the GPU's performance degrades more sharply at this resolution.

GPU Role

The NVIDIA GeForce RTX 5070 Mobile is built on the Blackwell 2.0 architecture with a 5 nm process from TSMC. It features 4608 shading units, 144 texture mapping units, and 48 raster output units, with 36 ray tracing cores and 144 tensor cores. The GPU operates at a base clock of 907 MHz and a boost clock of 1425 MHz, which is relatively low for a mobile part, but the 8 GB of GDDR7 memory on a 128-bit bus provides 384.0 GB/s of bandwidth.

The GPU's benchmark scores show it performs at the 75th percentile against all GPUs, with an average score of 29928. Its nearest rival, the RTX 3070 Ti, scores 29945, showing a -0.1% difference, meaning they are essentially equal in synthetic tests. In Rust, the GPU's role is critical at higher resolutions, as the measured FPS drops significantly from 1080p to 4K. The 4K Ultra result of 28 FPS is particularly low, indicating that the 8 GB VRAM and 384.0 GB/s bandwidth are insufficient for maximum settings at this resolution. The GPU's 13.13 TFLOPS of FP32 performance is a limiting factor in this scenario, as the pixel workload exceeds its capabilities.