Rust

Rust is a demanding survival title, and the combination of the Intel Core Ultra X9 388H with the NVIDIA GeForce RTX 5070 shows a clear performance curve that is heavily dictated by resolution. At 1080p, the system delivers strong frame rates, but scaling to 4K causes a significant drop, indicating that the GPU becomes the primary limiting factor at higher resolutions while the CPU holds its own at lower ones. The data shows a playable experience at 1080p and 1440p with adjusted settings, but 4K requires substantial compromises to maintain smooth gameplay.

Resolution Scaling

The measured FPS data reveals a steep performance decline as resolution increases, which is typical for a GPU-bound scenario. At 1080p with Low settings, the combo achieves an average of 161 FPS. Moving to 1440p Low drops that to 111 FPS, a 31% reduction, and at 4K Low the average falls to 65 FPS, which is 60% lower than the 1080p figure. This pattern shows that the RTX 5070 is being pushed progressively harder as pixel count rises, and the frame rate loss is directly proportional to the increase in rendering load.

For High settings, the scaling is similar but with lower absolute numbers. The average goes from 91 FPS at 1080p to 63 FPS at 1440p (a 31% drop) and then to 37 FPS at 4K (a 59% drop from 1080p). The gap between 1440p and 4K is particularly pronounced, with the 4K High result falling below the 60 FPS threshold that most players consider smooth. This indicates that the GPU is running out of headroom at 4K, and the frame rate is no longer sustainable for fast-paced gameplay.

The Medium settings tier shows the same trend, with averages of 108 FPS at 1080p, 74 FPS at 1440p, and 44 FPS at 4K. The Ultra preset is the most demanding, yielding 69 FPS at 1080p, 48 FPS at 1440p, and just 28 FPS at 4K. The 4K Ultra result is barely playable, and the data suggests that this resolution/settings combination is only suitable for screenshots or very slow-paced exploration rather than competitive play.

What this scaling tells us is that the limiting component shifts depending on resolution. At 1080p, the CPU is likely the bottleneck, as the frame rates are high enough that the processor's single-thread performance becomes more relevant. At 4K, the GPU is clearly the constraint, as the pixel fill rate and memory bandwidth of the RTX 5070 are overwhelmed by the demand. The 1440p results sit in a balanced zone where both components contribute, but the GPU still has the final say on the upper limit.

GPU Role

The NVIDIA GeForce RTX 5070 is built on the Blackwell 2.0 architecture with a GB205 chip, and its specifications directly influence the measured results. The GPU features 12 GB of GDDR7 memory on a 192-bit bus, providing a memory bandwidth of 672.0 GB/s. This bandwidth is sufficient for 1080p and 1440p gaming, but at 4K, the higher resolution textures and larger frame buffers put more strain on the memory subsystem, which contributes to the significant FPS drop observed in the data.

The GPU's clock speeds are listed with a base of 2325 MHz and a boost of 2512 MHz. These clocks are relatively high, and the boost behavior allows the card to maintain performance under load. The shading units count is 6144, with 192 texture mapping units and 80 raster output units, which gives the card a theoretical pixel rate of 201.0 GPixel/s and a texture rate of 482.3 GTexel/s. These numbers translate to solid raw throughput, but they are not enough to keep 4K Ultra playable, as evidenced by the 28 FPS average.

The FP32 performance is rated at 30.87 TFLOPS, and the card supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. In Rust, which uses a custom engine, the DirectX 12 path is likely utilized, and the data shows that the GPU can handle the game's geometry and lighting effects at lower resolutions. The RTX 5070's percentile vs all GPUs is 82, indicating it sits above the majority of graphics cards in the database, but its nearest rivals in benchmarks are professional workstation cards like the AMD Radeon Pro 580 and Pro WX 7100, which are not gaming-focused.

The GPU's memory of 12 GB is a notable factor. At 4K with High settings, the average FPS is 37, which suggests that the card is not only compute-bound but also potentially memory-capacity-bound, as Rust can consume large amounts of VRAM with high-resolution textures. The 192-bit bus width, while adequate for 1440p, becomes a limiting factor at 4K where the higher data transfer requirements cannot be fully met. The result is that the GPU's role in this combo is to provide strong performance at mainstream resolutions, but it falls short of delivering a buttery-smooth 4K experience.

CPU Role

The Intel Core Ultra X9 388H is a mobile processor with 16 cores and 16 threads, which is an unusual configuration that lacks hyperthreading. Its base clock is 2.10 GHz, and it can boost up to 5.10 GHz, which is a substantial single-core capability. The cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 18 MB of shared L3 cache. This setup is designed to provide strong single-threaded performance, which is critical for Rust's game logic and physics calculations.

In synthetic benchmarks, the CPU scores 18911 in Cinebench R23 multi-core and 2200.5 in single-core. These scores place it in the 88th percentile vs all CPUs, indicating it is a high-end processor. Its nearest rivals include the AMD Ryzen 5 7500X3D, which scores 44573 with a delta of -0.2%, and the Intel Core i9-13950HX, which scores 44342 with a delta of 0.3%. This means the Ultra X9 388H is effectively on par with these desktop-class chips, which is remarkable for a mobile part.

The CPU's memory support is LPDDR5X with a dual-channel bus and a bandwidth of 153.6 GB/s. This memory bandwidth is lower than what the GPU has access to, but for CPU-bound tasks like game logic, it is sufficient. The processor also has integrated graphics in the form of Arc B390, but in this combo, the discrete RTX 5070 takes over rendering duties.

In Rust, the CPU's role is evident in the 1080p results. At 1080p Low, the system hits 161 FPS, which is high enough that the CPU's single-thread performance is likely the limiting factor. The boost clock of 5.10 GHz helps maintains high frame rates, but the lack of hyperthreading with 16 threads could be a slight disadvantage in scenarios where the game spawns many entities or calculations. However, the data shows that the CPU does not bottleneck the GPU at 1080p, as the frame rates are consistently above 90 FPS even at High settings.

How This Combo Ranks

In the database of tested combinations, this specific pairing of the Intel Core Ultra X9 388H and NVIDIA GeForce RTX 5070 ranks 1567 out of 2953 total combos for Rust. This places it in the middle of the pack, which is surprising given the individual components' high percentiles. The CPU is in the 88th percentile, and the GPU is in the 82nd percentile, but the combo's rank suggests that the pairing does not synergize as well as expected for this particular game.

The rank of 1567 out of 2953 means that roughly 47% of tested combos perform better in Rust. This could be due to the fact that the CPU, while powerful, is a mobile part with a lower TDP of 25 W, which might limit sustained performance in long gaming sessions. The GPU, while strong, is not a top-tier desktop card, and its 12 GB memory might be a constraint in Rust's open-world environment.

When comparing to other combos, the nearest CPU rivals like the AMD Ryzen 5 7500X3D and Intel Core i9-13950HX have similar average scores, within 0.5% of the Ultra X9 388H. This means the CPU is not the reason for the mid-pack rank. The GPU's nearest rivals are workstation cards like the AMD Radeon Pro 580 and Pro WX 7100, which have lower gaming performance, so the RTX 5070 should be better than those. The mid-pack rank likely stems from the specific way Rust utilizes hardware, possibly favoring higher memory bandwidth or different core configurations.

The data shows that this combo is capable of good frame rates at 1080p and 1440p, but it is not exceptional. The rank reflects that there are many other combinations that can achieve higher FPS in Rust, particularly at 4K where the GPU becomes the bottleneck. For a user considering this combo, the expectation should be for a solid 1080p and 1440p experience, but not for top-tier 4K performance.

FAQ

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

A: Based on the measured data, 1080p offers the highest frame rates, with an average of 161 FPS on Low settings and 91 FPS on High. 1440p is also playable with averages of 111 FPS on Low and 63 FPS on High. 4K is the weakest, with averages dropping to 65 FPS on Low and 37 FPS on High.

Q: Is the RTX 5070 sufficient for 4K gaming in Rust?

A: The data indicates that 4K is playable only at Low settings, with an average of 65 FPS. At Medium, the average drops to 44 FPS, and at High it falls to 37 FPS. Ultra is nearly unplayable at 28 FPS. This suggests the GPU is not well-suited for 4K in Rust.

Q: How does the CPU's single-thread performance affect Rust?

A: The CPU has a boost clock of 5.10 GHz and scores 2200.5 in Cinebench R23 single-core. This high single-thread performance likely contributes to the strong 1080p results, where the CPU is more likely to be the limiting factor. The 1080p Low average of 161 FPS demonstrates this capability.

Q: What is the GPU's memory configuration and does it matter?

A: The RTX 5070 has 12 GB of GDDR7 memory on a 192-bit bus with a bandwidth of 672.0 GB/s. This configuration is adequate for 1080p and 1440p, but at 4K, the memory bandwidth may become a bottleneck, contributing to the significant FPS drop observed.

Q: How does this combo rank compared to others?

A: This combo ranks 1567 out of 2953 tested combinations for Rust. This places it in the middle of the database, indicating that while the components are individually strong, the pairing does not achieve top-tier performance in this specific game.

Q: What are the frame times at Medium settings?

A: At 1080p Medium, the average FPS is 108 with a minimum of 92 and a maximum of 124. At 1440p Medium, the average is 74 with a minimum of 63 and a maximum of 85. At 4K Medium, the average is 44 with a minimum of 37 and a maximum of 50.

Measured FPS Breakdown

The following data is derived from direct measurement of the game with this specific hardware configuration. All values are average FPS unless otherwise noted.

1080p (1920x1080)

• Low: 161 FPS average
• Medium: 108 FPS average, with a minimum of 92 FPS and a maximum of 124 FPS
• High: 91 FPS average
• Ultra: 69 FPS average

1440p (2560x1440)

• Low: 111 FPS average
• Medium: 74 FPS average, with a minimum of 63 FPS and a maximum of 85 FPS
• High: 63 FPS average
• Ultra: 48 FPS average

4K (3840x2160)

• Low: 65 FPS average
• Medium: 44 FPS average, with a minimum of 37 FPS and a maximum of 50 FPS
• High: 37 FPS average
• Ultra: 28 FPS average

The data reveals a clear hierarchy: 1080p is the most comfortable resolution for this combo, with all settings above 60 FPS except Ultra, which still manages 69 FPS. 1440p is playable at Low and Medium, but High drops to 63 FPS and Ultra to 48 FPS, which may be acceptable for some players but not ideal for competitive play. 4K is only viable at Low settings, and even then, the 65 FPS average is not consistently smooth given the minimum frame rate is not reported for this setting. The Medium 4K result shows a minimum of 37 FPS, indicating significant dips that could cause stuttering in busy scenes. Overall, the measured FPS breakdown shows that this combo is best suited for 1080p and 1440p gaming, with 4K reserved for less demanding scenarios.