Rust

# CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core Ultra 5 235HX is a 14-core, 14-thread mobile processor based on the Arrow Lake-HX architecture, built on a 3 nm process by TSMC. It operates with a base clock of 2.90 GHz and a boost clock of 5.10 GHz, with a TDP of 55 W. The chip carries 24 MB of shared L3 cache, with 3 MB of L2 per core and 192 KB of L1 per core. This CPU supports DDR5 memory through a dual-channel interface, providing a memory bandwidth of 102.4 GB/s.

In synthetic benchmarks, this processor demonstrates strong single-threaded performance with a Cinebench R23 single-core score of 4903, and its multi-core result of 34731 in the same test indicates substantial parallel capability. The Passmark multithread score of 40849 and a single-thread score of 4683 further confirm balanced performance across workloads. The CPU holds a 91st percentile ranking among all tested CPUs, with an average benchmark score of 52073.

When compared to its nearest rivals, the Core Ultra 5 235HX sits within a tight performance band. It trails the AMD EPYC 8124P by 0.1% (52121 vs. 52073), while the AMD Ryzen 9 5950X trails this chip by 0.2% (51947). The Intel Core i7-14700 leads by 0.4% (52301), and the Core i9-13900F is behind by 0.7% (51730). These margins are negligible, placing the Ultra 5 235HX in the same performance tier as several flagship desktop processors from previous generations.

For Rust, a game known for its heavy server-side simulation and entity processing, the CPU's single-thread performance is particularly relevant. The game's tick rate and physics calculations often bottleneck on a single core, and the 5.10 GHz boost clock provides headroom for these serial workloads. The 14 threads also allow background tasks—such as terrain streaming and networking—to run concurrently without starving the main game thread. The benchmark results in Rust show clear CPU influence at lower resolutions, where the processor's ability to feed the GPU becomes the limiting factor.

# GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce RTX 4080 is a mobile-class GPU based on the AD103 chip, built on a 5 nm process by TSMC. It features 9728 shading units, 304 texture mapping units, and 112 raster output units, along with 76 ray tracing cores and 304 tensor cores. The GPU operates at a base clock of 2205 MHz and a boost clock of 2505 MHz, with memory clocked at 1400 MHz (22.4 Gbps effective). It is equipped with 16 GB of GDDR6X memory on a 256-bit bus, delivering a memory bandwidth of 716.8 GB/s.

The compute capabilities are substantial: the RTX 4080 achieves 48.74 TFLOPS of FP32 performance and the same for FP16 (1:1 ratio). Pixel rate reaches 280.6 GPixel/s, and texture rate is 761.5 GTexel/s. In synthetic benchmarks, the GPU scores 34457 in Passmark G3D and 20671 in Passmark GPU compute. It holds an 86th percentile ranking among all GPUs, with an average benchmark score of 54247.

Compared to its nearest rivals, the RTX 4080's position is interesting. The RTX 4080 SUPER scores 54209, a 0.1% delta from this chip, making them functionally identical in average benchmarks. The AMD Radeon Pro W5700X leads by 1.1% (54828), while the AMD Radeon RX 6750 GRE 12 GB and AMD Radeon 8060S lead by 2.6% (55698) and 2.7% (55757) respectively. These differences are small, but they place the RTX 4080 slightly behind some competitors in aggregate compute metrics.

For Rust, the GPU's 16 GB of VRAM is more than sufficient for the game's texture streaming and draw call requirements, even at high resolutions. The 716.8 GB/s memory bandwidth ensures that large texture sets and dynamic lighting data can be fed to the GPU without stuttering. The boost clock of 2505 MHz allows for consistent frame pacing, which is critical in a survival game where sudden frame drops can affect gameplay responsiveness. At 4K resolution, the GPU becomes the primary bottleneck, as evidenced by the measured FPS data showing lower averages compared to 1440p and 1080p.

# Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data across resolutions reveals a clear scaling pattern that identifies the limiting component at each setting tier. At Low settings, the average frame rate drops from 207 FPS at 1080p to 142 FPS at 1440p, then to 84 FPS at 4K. This represents a 31% reduction from 1080p to 1440p, and a further 41% reduction from 1440p to 4K. The steep decline at 4K indicates the GPU is becoming the primary constraint, as the pixel count quadruples from 1080p while the CPU workload remains relatively constant.

At Medium settings, the pattern is similar: 139 FPS at 1080p, 95 FPS at 1440p (a 32% drop), and 56 FPS at 4K (a 41% drop from 1440p). The consistent percentage drops across resolutions suggest that the CPU is capable of maintaining higher frame rates, but the GPU's rendering load scales predictably with pixel count. The min and max FPS values at Medium settings also show this trend: at 1080p, the range is 118-159 FPS; at 1440p, it narrows to 81-110 FPS; and at 4K, it tightens further to 48-65 FPS. This compression of the frame time distribution at higher resolutions indicates GPU-bound behavior, where the GPU's consistent workload leads to more stable frame pacing.

At High settings, the scaling is 117 FPS at 1080p, 81 FPS at 1440p (a 31% drop), and 48 FPS at 4K (a 41% drop from 1440p). The Ultra preset shows the most dramatic drop: 89 FPS at 1080p, 61 FPS at 1440p (a 31% drop), and 36 FPS at 4K (a 41% drop). The uniformity of these percentage drops—approximately 31% between 1080p and 1440p, and 41% between 1440p and 4K—across all settings suggests a consistent GPU-bound scenario at higher resolutions. The CPU's influence is most apparent at 1080p, where the frame rates are high enough that the processor's ability to issue draw calls and process game logic could limit performance, but the data shows the GPU still manages to push above 200 FPS at Low settings, indicating the CPU is not a bottleneck even at this resolution.

The limiting component shifts from CPU to GPU as resolution increases. At 1080p Low, the 207 FPS average suggests the CPU can feed the GPU effectively, but the GPU is still the ultimate cap. At 4K Ultra, the 36 FPS average clearly indicates the GPU is overwhelmed by the rendering load. The data supports a conclusion that this combo is balanced at 1440p, where both components contribute to performance without either becoming a severe bottleneck.

# Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

1920x1080 (1080p): At Low settings, the average FPS is 207. Medium settings yield an average of 139 FPS, with a minimum of 118 and a maximum of 159. High settings produce 117 FPS average, while Ultra settings bring the average down to 89 FPS. The progression from Low to Ultra shows a 57% reduction in average frame rate (207 to 89 FPS), with each preset step costing approximately 30-40 FPS. The Medium setting's min-max range of 118-159 FPS indicates some frame time variance, but the average remains smooth for competitive play.

2560x1440 (1440p): Low settings average 142 FPS, which is 65 FPS lower than the 1080p Low result. Medium settings average 95 FPS, with a range of 81-110 FPS. High settings average 81 FPS, and Ultra settings average 61 FPS. The drop from Low to Ultra at this resolution is 57% (142 to 61 FPS), mirroring the percentage reduction seen at 1080p. The Medium setting's min of 81 FPS matches the High average exactly, suggesting that frame dips at Medium can reach the performance level of the next preset down.

3840x2160 (4K): Low settings average 84 FPS, which is the only preset above 60 FPS at this resolution. Medium settings average 56 FPS, with a range of 48-65 FPS. High settings average 48 FPS, and Ultra settings average 36 FPS. The drop from Low to Ultra is 57% (84 to 36 FPS), consistent with the other resolutions. The Medium setting's min of 48 FPS is equal to the High average, indicating that even the minimum frame rate at Medium matches the average of the next preset up.

Across all resolutions, the percentage reduction from Low to Ultra is remarkably consistent at approximately 57%. This uniformity suggests that the settings presets scale rendering load in a predictable manner, with each step adding a similar cost. The Medium preset at each resolution provides a balanced middle ground, with min FPS values that are close to the average FPS of the High preset at the same resolution.

# FAQ

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

A: Based on the measured FPS data, 1440p offers the best balance between visual quality and performance. At Medium settings, the combo achieves 95 FPS average (81-110 FPS range), which is above the 60 FPS threshold for smooth gameplay. At 4K, the average FPS drops below 60 FPS for all settings except Low, making it less suitable for consistent frame rates.

Q: How does the CPU compare to its nearest rivals in synthetic benchmarks?

A: The Intel Core Ultra 5 235HX scores 52073 on average, which is 0.1% below the AMD EPYC 8124P (52121) and 0.2% above the AMD Ryzen 9 5950X (51947). It trails the Intel Core i7-14700 (52301) by 0.4% and leads the Intel Core i9-13900F (51730) by 0.7%. These deltas are within 1%, indicating near-identical performance levels.

Q: What is the GPU's VRAM capacity and how does it affect Rust?

A: The NVIDIA GeForce RTX 4080 has 16 GB of GDDR6X memory on a 256-bit bus, providing 716.8 GB/s of bandwidth. For Rust, this is more than adequate for texture streaming and draw calls, as the game does not typically require more than 8-10 GB at high settings. The ample VRAM prevents texture pop-in and stuttering, even at 4K resolution.

Q: What are the FPS differences between Low and Ultra settings at 1080p?

A: At 1080p, Low settings average 207 FPS, while Ultra settings average 89 FPS. This represents a 57% reduction in average frame rate. The Medium setting (139 FPS) sits roughly halfway between Low and High (117 FPS), showing a linear progression of performance cost across presets.

Q: At which resolution does the GPU become the primary bottleneck?

A: The data indicates the GPU becomes the limiting factor at 1440p and above. At 1080p, the frame rates are high enough that the CPU could theoretically cap performance, but the fact that Low settings reach 207 FPS suggests the GPU is still the final arbiter. At 4K, the GPU is clearly the bottleneck, as the 36 FPS average at Ultra settings is far below what the CPU could support.

Q: How does this combo rank among all tested combos in Rust?

A: This combo ranks 849th out of 2953 tested combinations in Rust, placing it in the top 29% of all combos. This ranking reflects the balanced performance of the Core Ultra 5 235HX and RTX 4080, which together provide solid frame rates at 1080p and 1440p, with playable performance at 4K on lower presets.

# Settings Recommendations

Based on the measured FPS data, the optimal settings preset depends on the target resolution and desired frame rate. At 1080p, all presets are playable, but the Medium setting (139 FPS average) offers the best combination of visual fidelity and performance headroom for competitive play. The Ultra setting at 89 FPS is also viable for players who prioritize image quality over frame rate, but the 57% reduction from Low suggests diminishing returns.

At 1440p, the Medium preset (95 FPS average) is the recommended choice, as it maintains frame rates above 90 FPS while providing a significant visual upgrade over Low settings (142 FPS). The High preset (81 FPS) is also acceptable for players who prefer higher quality, but the frame rate dips closer to 60 FPS territory. Ultra at 61 FPS is borderline, with the risk of occasional drops below 60 FPS during intense scenes.

At 4K, only the Low preset (84 FPS) provides a consistently smooth experience. Medium (56 FPS) is playable but may exhibit stuttering during busy moments, as the min FPS of 48 indicates. High (48 FPS) and Ultra (36 FPS) are only suitable for players who prioritize visual quality over gameplay smoothness, as the frame rates fall below the 60 FPS threshold.

The data suggests that the Medium preset is the best overall choice across resolutions, as it provides a balanced trade-off between visual quality and performance. The measured min-max ranges for Medium settings are tighter than other presets, indicating more consistent frame pacing. For players targeting 1440p, Medium offers the best experience, while 1080p users can afford to push to High or Ultra without sacrificing playability.

# How This Combo Ranks

The Intel Core Ultra 5 235HX + NVIDIA GeForce RTX 4080 combo ranks 849th out of 2953 tested combinations in Rust, placing it in the 71st percentile of all combos (top 29%). This ranking reflects a system that is well-suited for the game but not at the absolute top tier of performance.

The CPU's 91st percentile ranking among all processors and the GPU's 86th percentile ranking among all GPUs suggest that both components are above average, but neither is in the elite tier. The combo's rank of 849 indicates that there are 848 other tested combinations that deliver higher average frame rates in Rust, likely featuring more powerful CPUs (such as those with higher single-thread scores) or GPUs (like the RTX 4090 or higher-end Ada Lovelace parts).

However, the ranking must be contextualized by the measured FPS data. At 1080p Low, this combo achieves 207 FPS, which is well above the refresh rate of most monitors. At 1440p Medium, the 95 FPS average is smooth for most gaming scenarios. The combo's rank reflects its position among all tested hardware, but for practical purposes, it delivers a strong Rust experience across most resolution and settings combinations.

The nearest rival comparisons for the CPU and GPU show that this combo is competitive with systems featuring components like the AMD Ryzen 9 5950X or Intel Core i7-14700 paired with an RTX 4080 SUPER. The margins are within 1% for the CPU and 0.1% for the GPU, meaning that swapping to these rivals would result in negligible frame rate differences in Rust. The combo's rank of 849 is therefore more a reflection of the sheer number of high-end combinations tested than a deficiency in this particular pairing.