Rust

Rust presents a demanding survival experience that scales heavily with both resolution and graphical preset. Benchmark results for the Intel Core Ultra 7 155H paired with the NVIDIA GeForce RTX 5090 show a wide performance envelope, from a highly playable 102 FPS at 1080p Ultra to a more challenging 41 FPS at 4K Ultra. The data indicates that this mobile CPU and flagship desktop GPU combination delivers its best balance of visual fidelity and smoothness at 1440p, with the CPU becoming a significant limiting factor at lower resolutions and the GPU taking over at 4K.

Resolution Scaling

The performance drop from 1080p to 4K is substantial and reveals a clear shift in the system's bottleneck. At 1080p with High settings, the average frame rate is 134 FPS. Moving to 1440p High reduces this to 92 FPS, a decrease of 42 FPS. The jump to 4K High further drops the average to 54 FPS, representing a 40 FPS loss from 1440p. This pattern demonstrates that at lower resolutions, the Intel Core Ultra 7 155H is the primary constraint, as the RTX 5090 has ample headroom to render frames quickly, but the CPU cannot feed it data fast enough.

This is most evident when examining the Low preset. At 1080p Low, the system achieves 201 FPS, which is a massive 67 FPS higher than the 1080p High result. However, at 4K Low, the average FPS is 96. The scaling from 1080p to 4K at Low settings shows a 105 FPS drop, a much larger absolute loss than at High settings. This is because the Low preset reduces the GPU's workload significantly, allowing the CPU bottleneck to become even more pronounced at lower resolutions, while at 4K, the GPU workload increases to a point where it starts to become the limiting factor.

The data suggests that the RTX 5090's performance is only fully utilized at higher resolutions. The percentage drop from 1440p to 4K at High settings is roughly 41%, while the drop from 1080p to 1440p is about 31%. This indicates that the GPU is becoming progressively more stressed as resolution increases, which is the expected behavior for a high-end graphics card. The 4K Ultra result of 41 FPS, which is the lowest score in the measured set, confirms that even this flagship GPU is challenged by Rust's most demanding settings at 4K.

CPU Role

The Intel Core Ultra 7 155H is a 16-core, 22-thread processor based on the Meteor Lake architecture, with a base clock of 3.80 GHz and a boost clock of 4.80 GHz. In this benchmark set, its role is decisive, particularly at 1080p. The fact that the 1080p Low preset scores 201 FPS while the 1080p Ultra preset scores 102 FPS shows that the CPU can push frames well above 200 when the GPU is not the bottleneck, but the gap between presets narrows as resolution increases.

The CPU's performance is best contextualized by its benchmark scores. It achieves a Cinebench R23 multi-core score of 15028 and a single-core score of 1743. These scores place it in the 83rd percentile of all CPUs, with an average benchmark score of 32697. Its nearest rivals include the Intel Core i5-14600T, which scores 32707 (0% delta), and the AMD Ryzen AI 7 PRO 360, which scores 32662 (0.1% delta). This indicates the 155H is a very capable mobile processor, but its performance is in line with mid-range desktop and high-end mobile chips, not flagship desktop models.

This positioning explains the 1080p bottleneck. With a Passmark single-thread score of 3468 and a multi-thread score of 24873, the CPU is powerful, but it cannot keep pace with the RTX 5090's raw rendering capability in a game like Rust, which is known for its heavy server-side and single-threaded simulation logic. The benchmark results show that at 1080p, the GPU is often waiting for the CPU. This is why the 1080p High (134 FPS) and 1080p Medium (159 FPS) scores are relatively close, while the jump to Low (201 FPS) is so large, as the reduced graphical load allows the CPU to become the absolute limiting factor.

GPU Role

The NVIDIA GeForce RTX 5090 is a massive GPU, built on the Blackwell 2.0 architecture with 32 GB of GDDR7 memory on a 512-bit bus, providing a bandwidth of 1.79 TB/s. Its benchmark credentials are formidable, with a Passmark G3D score of 39650 and a Geekbench Vulkan score of 376728, placing it in the 92nd percentile of all GPUs. However, its nearest rivals in the database are professional-grade cards like the NVIDIA Tesla P100, which suggests its gaming performance, while excellent, is not as far ahead of the competition as its raw specs might suggest.

In Rust, the GPU's role becomes more prominent as resolution increases. At 4K, the RTX 5090's strengths and weaknesses are laid bare. The 4K High average of 54 FPS is a playable, but not ideal, result. The 4K Ultra average of 41 FPS shows that maxing out every setting at 4K is too demanding. The 4K Low average of 96 FPS shows that the GPU can deliver high frame rates if the image quality is reduced, but the CPU still prevents it from reaching the 100+ FPS territory seen at lower resolutions.

The GPU's VRAM capacity of 32 GB is more than sufficient for Rust at any setting, so memory is not a limiting factor in these results. The 1.79 TB/s of bandwidth is also a major asset, preventing texture streaming and data transfer from becoming a bottleneck. The data indicates that the RTX 5090 is a high-end GPU that excels at 1440p and can handle 4K with adjusted settings, but it is not an absolute 4K Ultra card for this title, and its performance is often held back by the mobile CPU at lower resolutions.

Settings Recommendations

The benchmark data provides a clear picture for optimal settings. At 1080p, the Medium preset offers the best combination of visual quality and performance, delivering an average of 159 FPS. While the Low preset achieves 201 FPS, the jump to Medium only costs 42 FPS and provides a significant visual upgrade. The High preset at 134 FPS is also viable, but the 25 FPS gain from dropping to Medium is likely worth the reduction in graphical fidelity for most users. The Ultra preset, at 102 FPS, is still playable, but the performance cost is substantial.

At 1440p, the High preset is the clear winner. It delivers an average of 92 FPS, which is a solid result for a competitive survival game. The Medium preset is also good at 109 FPS, but High provides a better visual experience. The Ultra preset at 70 FPS is playable, but the 22 FPS drop from High makes it less attractive. The Low preset at 163 FPS is for competitive play, but the visual compromise is severe.

At 4K, the Medium preset is the most balanced choice. With an average of 65 FPS and a minimum of 55 FPS, it provides a smooth experience that is close to the 60 FPS target. The High preset at 54 FPS is borderline, and the Ultra preset at 41 FPS is too demanding for a consistent experience. The Low preset at 96 FPS is the only way to get high refresh rates at 4K, but it sacrifices most of the graphical features. Therefore, the data recommends 1440p High as the best overall experience for this combination of components, with 4K Medium as a viable alternative for users prioritizing resolution.

FAQ

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

A: Based on the measured FPS, 2560x1440 with High settings provides the best balance, achieving an average of 92 FPS. It offers a significant visual upgrade over 1080p while maintaining a high frame rate, unlike 4K which drops below 60 FPS on High settings.

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

A: Yes, but with compromises. The data shows an average of 54 FPS at 4K High and 65 FPS at 4K Medium. The Ultra preset is not playable, with an average of only 41 FPS. For a smooth 4K experience, the Medium preset is recommended.

Q: Is the CPU a bottleneck for the RTX 5090 in Rust?

A: Yes, particularly at 1080p. The 1080p Low preset yields 201 FPS, while 4K Low yields 96 FPS. This large gap indicates that the CPU is the limiting factor at lower resolutions, preventing the GPU from achieving even higher frame rates.

Q: How does the Intel Core Ultra 7 155H compare to its nearest rivals?

A: The CPU has an average benchmark score of 32697, which is nearly identical to the Intel Core i5-14600T (32707, 0% delta) and the AMD Ryzen AI 7 PRO 360 (32662, 0.1% delta). It performs slightly below the AMD Ryzen 5 7400F (32750, -0.2% delta).

Q: What is the difference in FPS between 1080p and 4K at High settings?

A: The average frame rate drops from 134 FPS at 1920x1080 to 54 FPS at 3840x2160, a difference of 80 FPS. This significant drop highlights the GPU workload increase at higher resolutions.

Q: Does the 32 GB VRAM of the RTX 5090 provide any benefit in Rust?

A: The 32 GB of GDDR7 memory is more than sufficient for Rust at any settings and resolution in this data set. It ensures that VRAM capacity is not a limiting factor, allowing the GPU to focus on rendering performance.

Measured FPS Breakdown

The following data represents all measured average FPS values for this configuration in Rust.

1920x1080:

• Low: 201 FPS
• Medium: 159 FPS (min 135, max 183)
• High: 134 FPS
• Ultra: 102 FPS

2560x1440:

• Low: 163 FPS
• Medium: 109 FPS (min 93, max 126)
• High: 92 FPS
• Ultra: 70 FPS

3840x2160:

• Low: 96 FPS
• Medium: 65 FPS (min 55, max 74)
• High: 54 FPS
• Ultra: 41 FPS

The data confirms a consistent scaling pattern across all settings. The Low preset always yields the highest frame rates, followed by Medium, High, and finally Ultra. The minimum and maximum FPS values, where recorded, show a reasonable frame time distribution, with the Medium preset at 4K showing the tightest range (55 to 74 FPS) relative to its average.