Rust

Rust presents an unusually demanding workload for the Intel Core Ultra 5 235HX and NVIDIA GeForce RTX 5090 combination, with benchmark results showing a clear progression from CPU-bound at 1080p to GPU-bound at 4K. At 1920x1080 with Low settings, the combo reaches 237 FPS average, while at 3840x2160 with Ultra settings, it drops to 41 FPS average. This 196 FPS spread across the resolution and settings matrix indicates that neither component is consistently the bottleneck, but rather the balance shifts dramatically depending on the configuration chosen. The data shows that Rust's performance scaling is not linear, with the Medium preset at each resolution providing the most stable frame pacing, as evidenced by the only min/max FPS values recorded in the dataset.

Resolution Scaling

The measured FPS data reveals a consistent pattern of performance degradation as resolution increases, but the magnitude of the drop varies significantly by settings preset. At Low settings, the transition from 1920x1080 to 2560x1440 costs 74 FPS (from 237 to 163), while moving from 2560x1440 to 3840x2160 costs another 67 FPS (from 163 to 96). This represents a 59.5% total reduction from 1080p to 4K at Low settings, suggesting that even at the lowest graphical fidelity, the rendering pipeline is heavily influenced by resolution-dependent work.

The High preset shows a different scaling curve, with 134 FPS at 1080p dropping to 92 FPS at 1440p (a 42 FPS loss) and then to 54 FPS at 4K (a 38 FPS loss). The proportional drop from 1440p to 4K is 41.3%, which is actually larger than the 31.3% drop from 1080p to 1440p. This accelerating degradation pattern at higher resolutions indicates that the RTX 5090's rendering capabilities are being progressively saturated, even though the GPU has 32 GB of GDDR7 memory and a 512-bit memory bus providing 1.79 TB/s of bandwidth.

Medium settings exhibit the most balanced scaling behavior, with 159 FPS at 1080p, 109 FPS at 1440p, and 65 FPS at 4K. The step-downs are 50 FPS and 44 FPS respectively, showing a more consistent per-resolution cost. The Ultra preset, however, reveals the steepest curve: 102 FPS at 1080p, 70 FPS at 1440p, and 41 FPS at 4K. The 4K Ultra result represents only 40.2% of the 1080p Ultra performance, demonstrating that the combination of maximum quality settings and 4K resolution creates a scenario where the GPU is clearly the limiting factor.

The min/max FPS data available only for the Medium preset provides additional insight into frame pacing stability. At 4K Medium, the range spans from 55 to 74 FPS (a 19 FPS spread), while at 1440p Medium it widens to 93-126 FPS (a 33 FPS spread), and at 1080p Medium it reaches 135-183 FPS (a 48 FPS spread). This widening variance at lower resolutions suggests that CPU-side frame generation becomes more variable when the GPU is less constrained, pointing to the Intel Core Ultra 5 235HX's 14 cores and 14 threads being tasked with more frequent draw calls.

CPU Role

The Intel Core Ultra 5 235HX is a 14-core, 14-thread processor based on the Arrow Lake architecture, built on a 3 nm process by TSMC with 17,800 million transistors on a 243 mm² die. Its base clock of 2.90 GHz can boost up to 5.10 GHz, and the chip carries 24 MB of shared L3 cache alongside per-core L1 and L2 allocations of 192 KB and 3 MB respectively. In synthetic benchmarks, this CPU achieves a Cinebench R23 multi-core score of 34,731 and a single-core score of 4,903, placing it in the 91st percentile among all tested CPUs.

The CPU's role in Rust becomes evident when examining the 1080p Low result of 237 FPS. At this resolution and settings level, the GPU is far from being the bottleneck, as evidenced by the fact that the same GPU at 4K Ultra only manages 41 FPS. The 237 FPS figure indicates that the CPU is capable of feeding the RTX 5090 with enough frames at low resolution, but the architecture's 14 threads (without hyperthreading) may limit peak frame rates in CPU-intensive scenes common in Rust's survival gameplay with many entities and structures.

Comparing the Core Ultra 5 235HX to its nearest rivals in the benchmark database, the data shows it performs within a narrow band of competitors. It scores 0.2% higher than the AMD Ryzen 9 5950X, 0.7% higher than the Intel Core i9-13900F, but 0.1% lower than the AMD EPYC 8124P and 0.4% lower than the Intel Core i7-14700. This clustering suggests that the CPU's compute capabilities are well-matched to its peers, yet the measured FPS in Rust at 1080p Low (237) cannot be directly attributed to CPU performance alone, as the GPU still has significant headroom at that configuration.

The PassMark multi-thread score of 40,849 and single-thread score of 4,683 provide context for the CPU's overall capability. The data compression score of 426,417 and floating-point math score of 129,819 indicate strong general-purpose performance, which is relevant for Rust's server-side simulation and physics calculations that run on the CPU. The 55 W TDP of this mobile processor, combined with its dual-channel DDR5 memory support providing 102.4 GB/s of bandwidth, suggests that memory bandwidth could become a constraint in scenarios where many objects need simultaneous updates, though the measured FPS data does not directly isolate this factor.

GPU Role

The NVIDIA GeForce RTX 5090 represents the flagship of the GeForce 50-series, built on the Blackwell 2.0 architecture with the GB202 chip manufactured on a 5 nm process by TSMC. This GPU contains 92,200 million transistors on a 750 mm² die, with 21,760 shading units, 680 texture mapping units, and 176 raster output units. The boost clock reaches 2,407 MHz, and the memory subsystem consists of 32 GB of GDDR7 on a 512-bit bus, delivering 1.79 TB/s of bandwidth. The GPU's FP32 performance is rated at 104.8 TFLOPS, placing it in the 92nd percentile among all tested GPUs.

In Rust, the RTX 5090's role becomes increasingly dominant as resolution and settings increase. The 4K Ultra result of 41 FPS is the clearest indicator of GPU-bound performance, especially when compared to the 1080p Low result of 237 FPS. The GPU's PassMark G3D score of 39,650 and 3DMark Steel Nomad DX12 score of 18,355 demonstrate its raw compute capability, yet Rust's 4K Ultra performance shows that even this flagship GPU struggles with maximum settings at 4K resolution.

The memory configuration of 32 GB GDDR7 is particularly relevant for Rust, which is known for its large world sizes and long play sessions where texture streaming and object persistence tax VRAM. The 1.79 TB/s bandwidth allows for rapid data transfer, but the measured FPS drop from 54 at 4K High to 41 at 4K Ultra suggests that the additional rendering work at Ultra settings (likely including higher shadow quality, more draw distance, and enhanced post-processing) overwhelms even this substantial bandwidth.

Comparing the RTX 5090 to its nearest rivals, the data shows it scores 0.3% higher than the NVIDIA Tesla P100 PCIe 16 GB, 0.6% higher than the Tesla P100 PCIe 12 GB, and 1.1% higher than the AMD Radeon RX 6850M XT, while scoring 1.4% lower than the AMD Radeon Pro Vega 64X. This tight clustering in average benchmark scores is interesting because the RTX 5090's specifications dramatically exceed those of these competitors, yet the average scores suggest that the benchmark suite does not fully differentiate the GPU's capabilities. In Rust specifically, the 54 FPS at 4K High versus 92 FPS at 1440p High shows a 41.3% performance loss from resolution scaling alone, which is consistent with the GPU's fill-rate and shader processing limits being approached.

FAQ

Q: Why does the 4K Ultra preset only achieve 41 FPS average when the RTX 5090 is such a powerful GPU?

A: The measured data shows that Rust at 4K Ultra creates a scenario where the GPU's rendering workload becomes the primary bottleneck. The 41 FPS average at 3840x2160 Ultra represents a 59.8% reduction from the 102 FPS at 1920x1080 Ultra, indicating that the combination of 4K resolution and maximum settings exceeds what even a 32 GB GDDR7 GPU with 1.79 TB/s bandwidth can process efficiently.

Q: Is the Intel Core Ultra 5 235HX holding back performance in Rust at lower resolutions?

A: At 1080p Low, the combo achieves 237 FPS, which is the highest measured result in the dataset. The CPU's 14 cores and 14 threads, with a 5.10 GHz boost clock, appear sufficient for this configuration. However, the widening FPS variance at 1080p Medium (135-183 FPS) compared to 4K Medium (55-74 FPS) suggests that CPU-side frame generation becomes more variable when the GPU is less constrained, potentially indicating some CPU limitation at very high frame rates.

Q: How does the Medium preset compare to High and Ultra across resolutions?

A: The Medium preset consistently delivers higher FPS than High and Ultra at every resolution. At 1080p, Medium achieves 159 FPS versus 134 FPS on High and 102 FPS on Ultra. At 1440p, the difference is 109 FPS versus 92 FPS and 70 FPS. At 4K, Medium reaches 65 FPS versus 54 FPS and 41 FPS. The Medium preset also provides the most stable frame pacing, as it is the only preset with recorded min/max values.

Q: What is the performance difference between 1080p and 4K on the Low preset?

A: The Low preset shows a 141 FPS drop from 237 FPS at 1920x1080 to 96 FPS at 3840x2160, representing a 59.5% reduction. This indicates that even at the lowest settings, resolution scaling has a substantial impact on performance, though the absolute FPS values remain playable at both resolutions.

Q: Does the RTX 5090's 32 GB VRAM make a difference in Rust?

A: The benchmark data does not isolate VRAM usage, but the GPU's memory configuration of 32 GB GDDR7 with 1.79 TB/s bandwidth is present in all measured results. The fact that 4K High achieves 54 FPS while 4K Ultra drops to 41 FPS suggests that the additional memory and bandwidth are not the limiting factors at these settings, as the performance gap is more likely attributable to compute and shading unit workload.

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

A: According to the comboRankInGame data, this Intel Core Ultra 5 235HX and RTX 5090 combination ranks 492nd out of 2,953 tested combos in Rust, placing it in the top 16.7% of all tested configurations.

Settings Recommendations

Based on the measured FPS data, the Medium preset provides the best balance between visual quality and performance across all three resolutions. At 1920x1080, Medium achieves 159 FPS average with a range of 135-183 FPS, which is 25 FPS higher than High (134) and 57 FPS higher than Ultra (102). The gap between Medium and Low at 1080p is 78 FPS (159 vs 237), but the visual quality improvement from Low to Medium is substantial enough that the FPS trade-off is justified for most players.

At 2560x1440, Medium delivers 109 FPS average with a range of 93-126 FPS, which comfortably exceeds the 60 FPS threshold for smooth gameplay. This is 17 FPS higher than High (92) and 39 FPS higher than Ultra (70). The 1440p Medium configuration appears to be the sweet spot for this combo, as it maintains high frame rates while providing better graphical fidelity than Low.

For 4K gaming, the Medium preset at 65 FPS average (range 55-74 FPS) is the only settings level that consistently stays above 60 FPS, making it the recommended choice for 3840x2160. The High preset at 54 FPS falls below this threshold, and Ultra at 41 FPS is noticeably less fluid. Players prioritizing visual quality over frame rate might consider High at 4K, but the data suggests that Medium provides the most consistent experience.

The Low preset, while achieving the highest FPS at all resolutions (237 at 1080p, 163 at 1440p, 96 at 4K), sacrifices significant visual fidelity. Given that the Medium preset at 4K still achieves 65 FPS, there is no strong argument for using Low settings at any resolution with this hardware combination. The Ultra preset, conversely, only reaches 102 FPS even at 1080p, which is below what the Medium preset achieves at 1440p, making Ultra a poor value in terms of FPS per visual quality increment.

Measured FPS Breakdown

At 1920x1080 resolution, the measured results show a clear hierarchy across settings. The Low preset achieves 237 FPS average, representing the maximum performance this combo can deliver in Rust. Medium follows at 159 FPS average, with a documented range of 135 to 183 FPS. High drops to 134 FPS average, and Ultra falls to 102 FPS average. The 135 FPS difference between Low and Ultra at 1080p demonstrates the substantial performance cost of maximum settings.

At 2560x1440 resolution, the pattern continues but with reduced absolute values. Low achieves 163 FPS average, Medium reaches 109 FPS average with a range of 93 to 126 FPS, High produces 92 FPS average, and Ultra delivers 70 FPS average. The 93 FPS difference between Low and Ultra at 1440p is smaller than at 1080p, indicating that resolution scaling compresses the settings-based performance spread.

At 3840x2160 resolution, the results compress further. Low achieves 96 FPS average, Medium reaches 65 FPS average with a range of 55 to 74 FPS, High produces 54 FPS average, and Ultra drops to 41 FPS average. The 55 FPS difference between Low and Ultra at 4K is the smallest of the three resolutions, suggesting that the GPU becomes the dominant constraint regardless of settings at this resolution.

The Medium preset is the only one with recorded min/max FPS values at all three resolutions, providing insight into frame time consistency. At 1080p, the 48 FPS spread (135-183) indicates significant frame rate variation, likely due to CPU-side scene complexity changes. At 1440p, the spread narrows to 33 FPS (93-126), and at 4K it narrows further to 19 FPS (55-74). This progressive narrowing suggests that as the GPU becomes more heavily loaded, the frame rate becomes more stable because the GPU work dominates the frame time.

How This Combo Ranks

The Intel Core Ultra 5 235HX and NVIDIA GeForce RTX 5090 combination ranks 492nd out of 2,953 tested combos in Rust, placing it in the 83.3rd percentile of all configurations. This ranking reflects the overall performance across all measured settings and resolutions, positioning this combo in the upper tier of systems tested with this game.

The CPU's 91st percentile ranking among all tested CPUs and the GPU's 92nd percentile ranking among all tested GPUs suggest that both components are individually strong, yet the combo's 83.3rd percentile ranking in Rust indicates that the game's specific workload characteristics prevent this hardware from achieving top-tier status. The data shows that Rust's performance is heavily influenced by the interaction between CPU and GPU, and this particular pairing, while powerful, does not reach the absolute highest echelons of the ranking table.

The nearest rival comparisons for the CPU show it performing within 0.7% of the AMD Ryzen 9 5950X and 0.4% of the Intel Core i7-14700, while the GPU's nearest rivals include the Tesla P100 variants and Radeon RX 6850M XT. These comparisons are based on average benchmark scores rather than Rust-specific performance, so they provide context for the components' general capabilities rather than their direct performance in this game.

Given that 2,953 combos were tested, a rank of 492 means there are 2,461 combinations that perform worse in Rust. This places the combo well within the top quartile of tested systems, though the gap to the top performers is not quantified in the available data. The combination of a mobile-class CPU (as indicated by its BGA socket and 55 W TDP) with a flagship desktop-class GPU creates an interesting dynamic, where the CPU's mobile design might limit performance in CPU-bound scenarios even though its benchmark scores are competitive with desktop rivals.