Rust

FAQ

Q: How does the Intel Core Ultra 9 275HX compare to its closest rivals in raw CPU benchmarks?

A: The data shows the Ultra 9 275HX sits within a narrow band of high-end processors. It trails the Intel Xeon w5-3525 by just 0.3% and the AMD EPYC 4484PX by 0.5%, while it leads the Intel Xeon 6515P by 0.7% in average benchmark score. This places it in the 94th percentile of all CPUs tested.

Q: What is the GPU's standing relative to the NVIDIA GeForce RTX 4070 Ti?

A: The RTX 5090 Mobile is 0.8% ahead of the RTX 4070 Ti in average benchmark score. It also leads the AMD Radeon Pro 5500 XT by 0.5% and the Intel Arc A730M by 1.0%, but trails the NVIDIA RTX 5880 Ada Generation by 1.8%. The GPU sits in the 84th percentile of all GPUs.

Q: What is the best 1080p setting for this combo in Rust?

A: Low settings deliver the highest average FPS at 237, followed by Medium at 159 FPS, High at 134 FPS, and Ultra at 102 FPS. For competitive play, Low offers the largest headroom, while Medium still provides a smooth experience above 150 FPS.

Q: How does the combo rank among all tested combinations for Rust?

A: This pairing ranks 692nd out of 3,723 tested combos, putting it in the top 18.6% of all configurations. This is a strong result, though not elite-tier, given the high-end components involved.

Q: What memory bandwidth does the CPU support, and how does that affect Rust?

A: The Ultra 9 275HX supports dual-channel DDR5 memory with a bandwidth of 102.4 GB/s. For a survival game like Rust, which relies heavily on asset streaming and world updates, this bandwidth helps maintain consistent frame pacing, though the GPU's 896.0 GB/s memory bandwidth is the larger factor at high resolutions.

Q: What are the clock speeds of the CPU and GPU in this combo?

A: The CPU has a base clock of 2.70 GHz and a boost clock of 5.40 GHz across 24 cores and 24 threads. The GPU runs at a base clock of 990 MHz with a boost clock of 1515 MHz. These figures indicate the CPU can handle single-threaded game logic while the GPU's boost clock sustains rendering workloads.

GPU Role

The NVIDIA GeForce RTX 5090 Mobile is the primary rendering engine in this combo, and its specifications explain the measured FPS patterns across Rust's settings. The GPU packs 10,496 shading units, 328 TMUs, and 112 ROPs, which are substantial numbers for a mobile part. Its 24 GB of GDDR7 memory on a 256-bit bus delivers 896.0 GB/s of bandwidth — critical for Rust's large, persistent world where texture streaming and terrain data constantly move between VRAM and the renderer.

Memory bandwidth is the standout feature here. At 4K Ultra, the combo drops to 41 FPS average, which tells a clear story: the GPU is working at its limit, but the memory subsystem is also saturated. The 896.0 GB/s figure is more than eight times the CPU's memory bandwidth, so the GPU is not waiting on the CPU for data transfer at high resolutions. Instead, the rendering load itself — particularly the shading units and ROPs — becomes the bottleneck.

Clock behavior reinforces this. The GPU's base clock of 990 MHz and boost of 1515 MHz are relatively modest for a flagship, but the sheer width of the architecture compensates. The 31.80 TFLOPS of FP32 throughput is what drives the 1080p Low result of 237 FPS average. At that resolution and setting, the GPU has plenty of headroom, and the data shows it can push frame rates well beyond typical display refresh rates.

The 24 GB VRAM capacity is another factor specific to Rust. The game is known for memory-hungry modded servers and long play sessions where the world accumulates entities. With 24 GB, there is no risk of VRAM overflow at any tested setting, which means the FPS drops from High to Ultra are purely compute-bound, not memory-capacity-bound. The 3DMark Steel Nomad DX12 score of 5,871 and Passmark G3D score of 30,034 confirm the GPU's raw performance level, placing it in the 84th percentile of all GPUs.

The GPU's nearest rival, the RTX 4070 Ti, is only 0.8% behind in average benchmark score. This is a tight margin, but in Rust specifically, the data shows the RTX 5090 Mobile's extra memory bandwidth (896.0 GB/s vs. the 4070 Ti's narrower bus) likely provides a measurable advantage in texture-heavy scenes. The FP32 throughput of 31.80 TFLOPS also helps with the game's physics calculations, which run on the GPU in many instances.

CPU Role

The Intel Core Ultra 9 275HX is a 24-core, 24-thread processor based on Arrow Lake-HX, built on a 3 nm TSMC process with 17,800 million transistors. Its base clock of 2.70 GHz and boost clock of 5.40 GHz give it strong single-thread performance, which is what Rust's game logic and server communication rely on. The 36 MB of shared L3 cache and 3 MB L2 per core help keep frequently accessed data close to the execution units, reducing latency in a game that constantly processes entity interactions.

Benchmark results show this CPU is a heavyweight. The Cinebench R23 multi-core score of 35,589 and single-core score of 2,204 indicate balanced performance across both heavily threaded and lightly threaded workloads. The Passmark multi-thread score of 55,759 and single-thread score of 4,713 further confirm this. In Rust, the CPU handles the simulation tick rate, which is typically single-threaded, while background tasks like asset decompression can use multiple cores. The 24 threads provide ample capacity for these parallel workloads.

The data shows the CPU's percentile rank is 94th among all CPUs, with an average benchmark score of 67,469. Its nearest rivals are all server or workstation parts: the Xeon w5-3525 (-0.3%), EPYC 4484PX (-0.5%), Threadripper PRO 5955WX (-0.6%), and Xeon 6515P (+0.7%). This is notable because the Ultra 9 275HX is a mobile processor competing directly with desktop and server silicon in raw compute, though its 55 W TDP suggests it operates within a tighter power envelope.

For Rust specifically, the CPU's role is most visible at 1080p Low settings, where the combo hits 237 FPS average. At that resolution, the GPU is not the limiting factor — the CPU is feeding frames as fast as the renderer can draw them. The boost clock of 5.40 GHz ensures that even with all 24 cores active, single-threaded game logic gets high priority. The L1 cache of 192 KB per core and L2 of 3 MB per core are generous, reducing the penalty for cache misses during rapid entity state changes.

The CPU's memory support for DDR5 at 102.4 GB/s bandwidth is adequate for Rust, but it is not the bottleneck in this combo. The data shows that FPS scales with resolution and settings in a pattern consistent with GPU limitation at higher loads, not CPU limitation. The CPU's 24 threads and high boost clock mean it can handle the game's simulation without becoming the primary constraint until very high frame rates are reached.

How This Combo Ranks

The combo's rank of 692 out of 3,723 tested combinations places it in the 81.4th percentile of all configurations. This is a strong showing, but the data suggests there is headroom for improvement. Given that the CPU is in the 94th percentile and the GPU is in the 84th percentile, the combo's overall rank is slightly below what either component alone would suggest. This is typical for Rust, which is known to be sensitive to memory latency and cache behavior as much as raw compute.

Breaking down the rank: the top 691 combos likely include configurations with faster memory (higher than 102.4 GB/s bandwidth) or CPUs with larger L3 caches. The Ultra 9 275HX's 36 MB L3 is substantial, but some desktop parts with more cache could edge ahead in Rust's asset-heavy scenes. The GPU's 84th percentile rank is the weaker link in this pairing, as the RTX 5090 Mobile is a mobile part with thermal constraints that limit sustained boost clocks compared to desktop equivalents.

Relative to the nearest rivals, this combo's performance is consistent. The CPU's delta of -0.3% to the Xeon w5-3525 and +0.7% to the Xeon 6515P shows it holds its own against server parts. The GPU's delta of +0.8% over the RTX 4070 Ti is notable because the 4070 Ti is a desktop card, yet the mobile 5090 edges it out in average benchmarks. This suggests the 5090 Mobile's architecture efficiency compensates for its lower clock speeds.

In practical terms, this rank means the combo is well above average for Rust, but not top-tier. For a 1080p gamer targeting 200+ FPS, this rank is more than sufficient. For a 4K enthusiast wanting to max out settings at 60 FPS, the data shows this combo falls short of that goal — the 4K Ultra average of 41 FPS is 19 FPS below the target.

Resolution Scaling

The FPS data across resolutions reveals where the bottleneck shifts. At 1080p Low, the combo achieves 237 FPS average. Moving to 1440p Low drops this to 163 FPS, a 31% reduction. At 4K Low, it falls to 96 FPS, another 41% drop. This scaling pattern is consistent with GPU-bound behavior at lower settings: as resolution increases, pixel count grows quadratically, and the GPU's shading units and ROPs become the limiting factor.

The High settings tell a similar story. At 1080p High, the average is 134 FPS. At 1440p High, it drops to 92 FPS (31% reduction). At 4K High, it falls to 54 FPS (41% reduction from 1440p). The consistent percentage drops across Low and High suggest the GPU is the primary constraint at these settings, with the CPU providing frames fast enough to not bottleneck.

The Medium settings include min and max FPS data, which adds insight. At 1080p Medium, the average is 159 FPS with a min of 135 and max of 183. At 1440p Medium, the average is 109 FPS with a min of 93 and max of 126. At 4K Medium, the average is 65 FPS with a min of 55 and max of 74. The min-to-max spread narrows at higher resolutions (48 FPS spread at 1080p, 33 FPS at 1440p, 19 FPS at 4K), indicating that frame pacing becomes more consistent when the GPU is more heavily loaded.

The Ultra settings show the largest resolution impact. From 1080p Ultra at 102 FPS to 1440p Ultra at 70 FPS (31% drop) to 4K Ultra at 41 FPS (41% drop from 1440p). The consistency of these percentage drops across all settings is striking — it suggests the limiting component scales linearly with pixel count, which points to the GPU's fill rate and memory bandwidth as the constraint.

The data shows that the CPU is not the bottleneck until frame rates exceed roughly 200 FPS. Below that, the GPU's rendering load dominates. At 1080p Low with 237 FPS, the CPU's single-thread performance is likely the limiter, as the GPU has ample headroom. This is corroborated by the CPU's strong single-core benchmark of 2,204 in Cinebench R23, which allows it to feed frames at high rates.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates. Low settings produce an average of 237 FPS, which is excellent for competitive play. Medium settings average 159 FPS with a minimum of 135 and maximum of 183, providing a smooth experience with better visual quality. High settings average 134 FPS, still well above 60 FPS. Ultra settings average 102 FPS, which is playable but shows the performance cost of maxing out all visual features.

At 2560x1440, the frame rates remain competitive. Low settings average 163 FPS, still above 144 Hz refresh rates. Medium settings average 109 FPS with a minimum of 93 and maximum of 126, which is solid for high-refresh monitors. High settings average 92 FPS, near the 90 FPS threshold for smooth gameplay. Ultra settings average 70 FPS, which is acceptable for immersive play but not ideal for fast-paced action.

At 3840x2160, the performance drops significantly. Low settings average 96 FPS, which is playable on 4K displays. Medium settings average 65 FPS with a minimum of 55 and maximum of 74, meaning there will be occasional dips below 60 FPS. High settings average 54 FPS, which is borderline for smooth gameplay. Ultra settings average 41 FPS, which is below the 60 FPS target and will feel sluggish in Rust's combat scenarios.

The measured FPS data is marked as measured, not estimated, which lends credibility to these numbers. The Medium settings are the only ones with complete min/max data, providing a fuller picture of frame time variance. The lack of min/max data for Low, High, and Ultra settings means we can only rely on averages for those, but the pattern is consistent.

For a practical recommendation: 1080p Medium or High offers the best balance of visual quality and frame rate, with 159 FPS and 134 FPS respectively. At 1440p, Medium at 109 FPS is the sweet spot. At 4K, Low at 96 FPS is the only setting that stays above 60 FPS consistently, while Medium at 65 FPS average will dip below 60 at times. The Ultra setting is not viable at any resolution above 1080p for smooth gameplay, with 102 FPS at 1080p being the only Ultra result above 70 FPS.