Rust

The Intel Core Ultra 5 235HX paired with the NVIDIA GeForce RTX 4090 is a lopsided combination for Rust, but the data shows it delivers a highly playable experience across most settings, with the GPU clearly dominating the workload. This combo ranks 559th out of 2,953 tested configurations, placing it in the top 19% of all tested combos. While that ranking is respectable, it is heavily influenced by the RTX 4090's raw power, as the Ultra 5 235HX is a mobile processor that holds the system back from achieving even higher standings in this desktop-centric game.

How This Combo Ranks

The combo's rank of 559 out of 2,953 tested combos puts it in the 81st percentile of all tested hardware pairings for Rust. This is a strong result, but it reveals a significant bottleneck: the CPU. The RTX 4090 is an end-of-life desktop flagship, while the Ultra 5 235HX is a mobile processor from the Core Ultra Series 2. The data shows this mismatch clearly in the benchmark results. The CPU's average benchmark score is 52,073, which places it in the 91st percentile of all CPUs, but its nearest rivals are all desktop or server-class parts: the AMD EPYC 8124P (scoring 52,121, just 0.1% higher), the AMD Ryzen 9 5950X (51,947, 0.2% lower), the Intel Core i7-14700 (52,301, 0.4% lower), and the Intel Core i9-13900F (51,730, 0.7% lower). This means the Ultra 5 235HX trades blows with high-end desktop CPUs in synthetic workloads, but in Rust, the game's engine does not scale perfectly with its 14 cores and 14 threads.

The GPU, by contrast, is in a class of its own. The RTX 4090's average benchmark score is 60,347, placing it in the 88th percentile of all GPUs. Its nearest rivals in the database are far less powerful: the Intel Arc Pro A60 (score 60,326, 0% delta), the AMD Radeon Pro Vega 48 (60,140, 0.3% lower), the AMD Radeon Pro W6600M (61,896, 2.5% higher), and the AMD Radeon PRO V710 (58,657, 2.9% lower). This shows that the RTX 4090 is dramatically faster than its closest scored rivals, which are professional workstation cards. The combination of a top-9% CPU and a top-12% GPU yields a top-19% combo rank, meaning the pairing is less than the sum of its parts in Rust specifically. The game is not using the full potential of either component, but the GPU is the clear workhorse.

FAQ

Q: Is this combo CPU-bound or GPU-bound in Rust?

A: The data strongly indicates a GPU-bound scenario at higher resolutions, but a CPU-bound scenario at 1080p. At 4K, the average FPS drops from 92 on Low to 40 on Ultra, showing the GPU is struggling with the load. However, at 1080p, the Low preset hits 226 FPS, while the Ultra preset drops to 98 FPS, a 128 FPS swing that suggests the CPU cannot feed the GPU fast enough at lower resolutions, capping performance.

Q: What is the best settings preset for a 144Hz 1440p monitor?

A: The Medium preset at 2560x1440 delivers an average FPS of 105, with a minimum of 89 FPS and a maximum of 120 FPS. This keeps the average above the 100 FPS mark and the minimum from dropping below 89 FPS, making it the only preset at this resolution that consistently stays in the high-refresh-rate territory. The High preset averages 88 FPS, which will dip below 60 FPS in demanding scenes.

Q: How does the RTX 4090's 24GB of memory affect Rust performance?

A: The RTX 4090 has 24 GB of GDDR6X memory on a 384-bit bus with 1.01 TB/s of bandwidth. In Rust, a game known for heavy asset streaming, this memory capacity is more than sufficient. The data shows performance is not limited by VRAM, as the GPU is still able to push 52 FPS at 4K Ultra, and the memory bandwidth is high enough to avoid stuttering, as evidenced by the consistent minimum FPS values on the Medium preset.

Q: Does the Intel Core Ultra 5 235HX's 14-core configuration help in Rust?

A: Rust's engine does not appear to scale well beyond a certain core count. The Ultra 5 235HX has 14 cores and 14 threads, which is a high count, but its Passmark multithread score of 40,849 is what places it in the 91st percentile. However, the game's performance at 1080p Low (226 FPS) versus 1080p High (128 FPS) shows a 98 FPS gap, which is more indicative of a CPU limit than a core count benefit. The CPU's single-thread performance, with a Passmark single-thread score of 4,683, is likely the more critical factor for Rust's primary game thread.

Q: What is the impact of the CPU's 24 MB L3 cache on gameplay?

A: The Ultra 5 235HX has 24 MB of shared L3 cache, which is modest compared to some desktop CPUs. The data cannot directly isolate cache performance, but the CPU's overall benchmark scores (Cinebench R23 multi-core: 34,731, single-core: 4,903) suggest it is a capable processor. In Rust, the cache size likely helps with keeping frequently accessed game data close to the cores, but the 1080p Low preset's 226 FPS result shows the CPU is still the limiting factor, as the GPU could likely render far more frames if the CPU could supply them faster.

Q: Should I use the 4K Ultra preset with this combo?

A: The data shows 4K Ultra averages 40 FPS, which is playable but not smooth. It is below the 60 FPS target for most gamers. The 4K High preset (52 FPS) is also below 60 FPS. If you want 4K, the Medium preset at 62 FPS (with a minimum of 52 FPS) is the only one that approaches playable frame rates. For a competitive edge, the 4K Low preset (92 FPS) is the best option, but it sacrifices visual fidelity.

Settings Recommendations

For a balanced experience, the Medium preset is the clear sweet spot across all three tested resolutions. At 1920x1080, Medium delivers 152 FPS average (129 min, 175 max), which is excellent for a fast-paced survival game. At 2560x1440, Medium drops to 105 FPS average (89 min, 120 max), which is still very smooth for most displays. At 3840x2160, Medium is the only preset that maintains an average above 60 FPS, hitting 62 FPS (52 min, 71 max). The data shows that High and Ultra presets provide diminishing returns in visual quality while costing significant frame rates, especially at higher resolutions.

If you have a high-refresh-rate monitor (144Hz or above), you should prioritize the Low preset. At 1080p, Low hits 226 FPS, and at 1440p, it hits 156 FPS. These frame rates far exceed what a standard 60Hz monitor can display, making them ideal for competitive play. The Ultra preset is not recommended for any resolution, as even at 1080p it only averages 98 FPS, and at 4K it drops to 40 FPS. The data suggests the game's Ultra settings are poorly optimized for this engine, as the jump from High to Ultra costs roughly 25-30% performance at every resolution. Stick with Medium for a visual-to-performance balance, or Low for maximum frame rates.

Measured FPS Breakdown

At 1920x1080, the combo shows its true potential. The Low preset averages 226 FPS, which is outstanding. Medium averages 152 FPS with a minimum of 129 FPS and a maximum of 175 FPS, providing a very consistent experience. High averages 128 FPS. Ultra averages 98 FPS. The spread from Low to Ultra is 128 FPS, indicating that the CPU is the limiting factor at this resolution, as the GPU is capable of far more than 226 FPS.

At 2560x1440, the performance scales down as expected. Low averages 156 FPS, still excellent. Medium averages 105 FPS (89 min, 120 max), which is a solid 60+ FPS experience. High averages 88 FPS. Ultra averages 67 FPS. The gap between Low and Ultra is 89 FPS. This resolution is likely the sweet spot for this combo, as Medium provides high refresh rates and High remains above 60 FPS.

At 3840x2160, the GPU becomes the primary bottleneck. Low averages 92 FPS. Medium averages 62 FPS (52 min, 71 max), which is just at the edge of playability. High averages 52 FPS. Ultra averages 40 FPS. The gap between Low and Ultra is 52 FPS. This is the first resolution where the RTX 4090's raw power is fully taxed, and the CPU's limitations are less visible. The Medium preset's minimum FPS of 52 shows that frame times can be inconsistent at 4K.

Resolution Scaling

The data shows a predictable pattern of performance degradation as resolution increases. From 1080p to 1440p, the average FPS drops by approximately 30-35% across all presets. For example, Medium goes from 152 FPS at 1080p to 105 FPS at 1440p, a 31% reduction. This is a typical scaling factor for a GPU-bound scenario, as the pixel count increases by 78% (from 2.07 million to 3.69 million pixels). The GPU is doing more work, but the CPU is still providing enough data.

From 1440p to 4K, the drop is more severe, approximately 40-45%. Medium goes from 105 FPS to 62 FPS, a 41% reduction. The pixel count increases by 125% (from 3.69 million to 8.29 million pixels), but the frame rate drops by less than half, indicating that the RTX 4090's memory bandwidth (1.01 TB/s) is helping to mitigate the load. However, the absolute numbers tell the real story: at 4K, the combo struggles to maintain 60 FPS on Medium, and High and Ultra presets fall below 60 FPS.

This scaling behavior reveals that the limiting component shifts with resolution. At 1080p, the CPU is the bottleneck, as evidenced by the massive 128 FPS gap between Low and Ultra settings. The CPU cannot process game logic and draw calls fast enough to feed the GPU's immense rendering power. At 4K, the GPU becomes the bottleneck, as the pixel fill rate demands (443.5 GPixel/s) and texture rate (1,290.2 GTexel/s) of the RTX 4090 are being fully utilized. The CPU's limitations are masked by the GPU's workload. The 1440p resolution is the balance point where neither component is completely overwhelmed, but the CPU is still slightly ahead, as the gap between Low and Ultra is 89 FPS, closer to the 1080p behavior than the 4K behavior.

CPU Role

The Intel Core Ultra 5 235HX is a 14-core, 14-thread processor based on the Arrow Lake-HX architecture. It has a base clock of 2.90 GHz and a boost clock of 5.10 GHz. This is a mobile processor (Intel BGA 2114 socket) with a 55W TDP, which is a significant handicap in a desktop context. The CPU's benchmark scores are respectable for a mobile part: Cinebench R23 multi-core scores 34,731 and single-core scores 4,903. Passmark multithread scores 40,849, and single-thread scores 4,683. These numbers place it in the 91st percentile of all CPUs, but its rivals are all desktop parts that outperform it in sustained workloads.

In Rust, the CPU's role is critical but not sufficient. The game is known to be single-thread-heavy in its main game loop, and the Ultra 5 235HX's single-core performance is strong, as shown by its Passmark single-thread score of 4,683. However, the 1080p Low preset (226 FPS) versus 1080p Ultra (98 FPS) shows that the CPU cannot maintain high frame rates when the GPU is not the limiting factor. The CPU's 24 MB of shared L3 cache is also a factor, but it is not enough to overcome the fact that this is a 55W mobile chip competing against desktop CPUs with higher power budgets and faster memory interfaces (the CPU supports dual-channel DDR5 with 102.4 GB/s bandwidth).

The data suggests that the Ultra 5 235HX is a capable processor for Rust, but it is the bottleneck in this combo. At 1080p, the GPU is effectively idle waiting for the CPU to send more frames. The CPU's 14 cores do not help much, as Rust likely uses only a few cores for its primary simulation. The game's performance is more dependent on the CPU's single-thread speed and memory latency, which are competitive but not class-leading. For this reason, the combo rank of 559 is more proof of the RTX 4090's brute force than to the CPU's ability to keep up. If you were to pair this CPU with a weaker GPU, the frame rates would be lower, but the bottleneck would be less pronounced. As it stands, the RTX 4090 is overqualified for this CPU in Rust, and the data shows you are leaving performance on the table at lower resolutions.