Rust

Rust with the Intel Core Ultra 7 155H and NVIDIA GeForce RTX 5070 Ti shows a clear GPU-bound progression as resolution climbs, but the gap between 1080p and 4K reveals where this mobile chip starts to strain the desktop-class graphics card. The frame rate curve from the measured data indicates that the RTX 5070 Ti is the dominant component at higher resolutions, while the Core Ultra 7 155H becomes a relevant factor only at the lowest settings and resolution.

Resolution Scaling

The measured FPS data shows a predictable decline in performance as resolution increases, but the magnitude of the drop varies significantly by settings preset. At Low settings, the average frame rate falls from 189 FPS at 1920x1080 to 130 FPS at 2560x1440, a reduction of 59 FPS, and then to 77 FPS at 3840x2160, representing a further 53 FPS drop. This translates to a 59% decrease in performance from 1080p to 4K at Low settings, indicating that the GPU is being pushed harder as pixel count rises.

The scaling pattern at Medium settings shows a similar trend, with average FPS moving from 127 at 1080p to 87 at 1440p and then 52 at 4K. The drop from 1440p to 4K is 35 FPS, which is proportionally larger than the 40 FPS drop from 1080p to 1440p. This suggests that the RTX 5070 Ti, with its 16 GB of GDDR7 memory and 896.0 GB/s bandwidth, is still the limiting factor at 4K, but the diminishing returns between 1440p and 4K are steeper than between 1080p and 1440p.

High settings follow a similar trajectory: 107 FPS at 1080p, 74 FPS at 1440p, and 44 FPS at 4K. The 33 FPS difference between 1080p and 1440p is nearly identical to the 30 FPS difference between 1440p and 4K, suggesting a more linear scaling pattern at this preset. Ultra settings produce the lowest frame rates across all resolutions, with 82 FPS at 1080p, 56 FPS at 1440p, and 33 FPS at 4K. The 4K Ultra result of 33 FPS is barely playable, and the gap between 1080p and 4K at Ultra is 49 FPS, the largest absolute drop of any preset.

The data indicates that at 1080p, the Core Ultra 7 155H starts to become a factor, particularly at Low settings where 189 FPS approaches the CPU's practical ceiling for this game. The 16-core, 22-thread processor with a 3.80 GHz base clock and 4.80 GHz boost clock appears sufficient to feed the GPU at lower resolutions, but the scaling from 1440p to 4K is almost entirely GPU-driven, as evidenced by the consistent frame rate reductions across all settings.

GPU Role

The NVIDIA GeForce RTX 5070 Ti is the clear performance driver in this configuration, and its specifications align with the measured results. The GPU features 16 GB of GDDR7 memory on a 256-bit bus, delivering 896.0 GB/s of bandwidth. This memory configuration is well-suited for Rust's open-world environments, which often require large texture pools and draw distances. The base clock of 2295 MHz and boost clock of 2452 MHz provide the raw compute throughput needed for the game's rendering workload.

The RTX 5070 Ti's compute capabilities include 8960 shading units, 280 texture mapping units, and 96 raster output units. The FP32 performance of 43.94 TFLOPS gives the GPU substantial headroom for the shader-heavy workloads typical of Rust's procedurally generated terrain and building systems. The 70 ray tracing cores and 280 tensor cores are present but are less relevant for this title, which does not heavily rely on ray-traced effects in its standard rendering path.

The GPU's benchmark scores place it in the 86th percentile of all GPUs, with an average benchmark score of 49957. Its nearest rival, the AMD Radeon RX Vega 64, scores 50001, a delta of -0.1%, making the two effectively equivalent in synthetic benchmarks. The Intel Arc A550M trails by 0.4% with a score of 49737, while the AMD Radeon RX 6900 XT leads by 2% with 50951. These close margins in synthetic testing do not fully capture the RTX 5070 Ti's advantage in modern titles like Rust, where its architecture and driver optimization provide better real-world scaling.

The measured FPS data shows that the GPU is the limiting factor at 4K across all settings. At Ultra 4K, the average FPS of 33 is below the 44 FPS seen at High 4K, and even the Medium 4K result of 52 FPS with a minimum of 44 FPS indicates that the GPU is struggling to maintain consistent frame times. The 4K Low result of 77 FPS shows that reducing graphical fidelity can unlock playable performance, but the GPU's raw throughput at 4K is the primary constraint. At 1080p, however, the GPU has excess headroom, as evidenced by the 189 FPS average at Low settings, which suggests that the CPU is starting to become a bottleneck at this resolution.

FAQ

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

A: Based on the measured data, 2560x1440 at High settings provides the best balance, with an average FPS of 74 that remains above the 60 FPS threshold while maintaining visual quality. The 1920x1080 Low setting achieves 189 FPS but sacrifices graphical fidelity, while 3840x2160 at any setting fails to consistently reach 60 FPS.

Q: How does the RTX 5070 Ti compare to its nearest rivals in synthetic benchmarks?

A: The RTX 5070 Ti scores 49957 on average, which is 0.1% below the AMD Radeon RX Vega 64 (50001) and 0.4% above the Intel Arc A550M (49737). The AMD Radeon RX 6900 XT leads by 2% with a score of 50951, while the RX 6800 XT trails by 3.1% with 48477.

Q: Is the Core Ultra 7 155H a bottleneck at any resolution?

A: The data suggests the CPU becomes a limiting factor at 1080p Low settings, where the GPU produces 189 FPS. At 1440p and above, the GPU is the clear bottleneck, as frame rates scale predictably with resolution. The processor's 16 cores and 22 threads with a 4.80 GHz boost clock appear sufficient for most Rust workloads.

Q: What is the minimum FPS recorded across all tested configurations?

A: The only minimum FPS values provided in the data are for Medium settings: 44 FPS at 4K, 74 FPS at 1440p, and 108 FPS at 1080p. These minimums are 8 FPS below the averages at 4K and 1440p, and 19 FPS below at 1080p, indicating more frame time variance at lower resolutions.

Q: How does the GPU's memory bandwidth affect performance at 4K?

A: The 896.0 GB/s bandwidth on a 256-bit bus provides ample headroom for 4K textures, but the measured FPS drop from 77 at Low to 33 at Ultra at 4K suggests that memory bandwidth alone cannot overcome the increased shader and fill rate demands of higher settings. The 16 GB capacity prevents memory overflow, but the GPU's compute throughput is the limiting factor.

Q: What is the performance gap between Low and Ultra settings at each resolution?

A: At 4K, the gap is 44 FPS (77 Low vs 33 Ultra), at 1440p it is 74 FPS (130 Low vs 56 Ultra), and at 1080p it is 107 FPS (189 Low vs 82 Ultra). The absolute gap widens at lower resolutions, but the percentage difference remains consistent, indicating that settings scaling is uniform across resolutions.

Settings Recommendations

The measured data provides clear guidance for optimizing Rust on this hardware. At 1920x1080, the Low preset delivers 189 FPS average, which is unnecessarily high for most displays and sacrifices visual quality. The Medium preset at 127 FPS with a minimum of 108 FPS offers a better balance, providing smooth gameplay while maintaining reasonable graphical fidelity. High at 107 FPS is also viable if visual quality is prioritized, but Ultra at 82 FPS, while playable, does not offer a proportional visual improvement over High for the performance cost.

At 2560x1440, the Medium preset at 87 FPS is the sweet spot, with a minimum of 74 FPS that stays above console-standard frame rates. High at 74 FPS is also acceptable, but the 13 FPS difference between Medium and High may not justify the visual upgrade for competitive play. Low at 130 FPS provides a high-refresh-rate experience for esports-style gameplay, while Ultra at 56 FPS approaches the playability threshold and is not recommended for consistent performance.

At 3840x2160, the situation is more constrained. Low at 77 FPS is the only preset that comfortably exceeds 60 FPS, making it the recommended choice for 4K gaming. Medium at 52 FPS with a minimum of 44 FPS is playable but will experience noticeable frame drops in busy scenes. High at 44 FPS and Ultra at 33 FPS are below the 60 FPS threshold and should be avoided for smooth gameplay, though they may be acceptable for slower-paced exploration or building.

The overall recommendation is to use 2560x1440 with Medium settings for the best experience, as this configuration provides 87 FPS average with a 74 FPS minimum, ensuring smooth gameplay across Rust's varied environments. For players prioritizing visual fidelity over frame rate, 1080p High at 107 FPS offers a strong compromise. The data clearly shows that 4K gaming on this combo requires significant settings reductions to achieve playable frame rates.

Measured FPS Breakdown

At 1920x1080, the measured average FPS values are as follows: Low settings produce 189 FPS, Medium produces 127 FPS with a minimum of 108 FPS and maximum of 146 FPS, High produces 107 FPS, and Ultra produces 82 FPS. The Medium preset is the only one with reported minimum and maximum values, showing a 38 FPS range between the floor and ceiling. This variance suggests that Rust's dynamic environment, including player-built structures and procedurally generated terrain, causes frame time fluctuations even at lower resolutions.

At 2560x1440, the average FPS values are: Low at 130 FPS, Medium at 87 FPS with a minimum of 74 FPS and maximum of 101 FPS, High at 74 FPS, and Ultra at 56 FPS. The Medium preset's minimum of 74 FPS is identical to the High preset's average, indicating that the High settings preset may experience dips below 60 FPS in demanding scenes. The 27 FPS range at Medium (74 to 101) is narrower than at 1080p, suggesting that the GPU is becoming more consistently utilized at this resolution.

At 3840x2160, the average FPS values are: Low at 77 FPS, Medium at 52 FPS with a minimum of 44 FPS and maximum of 59 FPS, High at 44 FPS, and Ultra at 33 FPS. The Medium preset's maximum of 59 FPS falls just short of 60 FPS, meaning that even the best-case frame times at this setting cannot achieve a locked 60 FPS experience. The gap between Low and Medium at 4K is 25 FPS, while the gap between Medium and High is 8 FPS, and between High and Ultra is 11 FPS, showing that the most significant performance cost comes from the Low to Medium transition.

The data across all resolutions shows a consistent pattern: the difference between Low and Medium is always the largest settings gap, while High to Ultra is smaller. This suggests that Medium settings add substantial rendering features that tax the GPU, while Ultra's incremental improvements have diminishing returns. The 4K Medium result of 52 FPS with a 44 FPS minimum is the most balanced 4K configuration, but it still falls short of the 60 FPS target that many players prefer.

CPU Role

The Intel Core Ultra 7 155H serves as the processor in this configuration, and its specifications provide context for the measured frame rates. The CPU features 16 cores and 22 threads based on the Meteor Lake architecture, built on Intel's 7 nm process node. The base clock of 3.80 GHz and boost clock of 4.80 GHz give it sufficient single-thread performance for game logic, while the 24 MB of shared L3 cache helps with the large data sets Rust generates.

In synthetic benchmarks, the Core Ultra 7 155H scores 15028 in Cinebench R23 multi-core and 1743 in single-core, placing it in the 83rd percentile of all CPUs with an average benchmark score of 32697. Its nearest rival, the Intel Core i5-14600T, scores 32707 with a delta of 0%, making them statistically equivalent. The AMD Ryzen AI 7 PRO 360 trails by 0.1% with 32662, while the AMD Ryzen 5 7400F leads by 0.2% with 32750. The AMD Ryzen 7 PRO 6850H is 0.4% ahead with 32812. These close margins indicate that the Core Ultra 7 155H is competitive with mid-range desktop and mobile processors from the same generation.

The CPU's role in Rust becomes evident at lower resolutions and settings. At 1080p Low, the 189 FPS average is likely near the processor's practical limit for this game, as Rust's simulation and networking code is not highly parallelized despite the CPU's 22 threads. The PassMark multi-thread score of 24873 and single-thread score of 3468 suggest that the processor has adequate performance for most gaming workloads, but the 4.80 GHz boost clock is the key factor for Rust's single-threaded components.

At 1440p and 4K, the CPU is not the bottleneck, as evidenced by the consistent frame rate scaling with resolution changes. The 130 FPS at 1440p Low and 77 FPS at 4K Low show that the GPU is the limiting factor once pixel count increases. The processor's 89.6 GB/s memory bandwidth and dual-channel DDR5 support provide sufficient data throughput for the GPU, though the mobile platform's memory bandwidth is lower than what a desktop platform would offer.

The processor's integrated graphics, an Arc Xe-LPG 128EU, is present but not utilized in this configuration since the RTX 5070 Ti handles all rendering. The CPU's 28 W TDP indicates it is a power-efficient mobile part, which may limit sustained boost clocks under heavy multi-threaded loads, but Rust's gaming workload does not appear to push the processor to its thermal limits based on the measured frame rates. The PassMark physics score of 1727 and data compression score of 277353 provide additional context for the processor's general-purpose performance, though these are not directly correlated with gaming frame rates.