Rust

The Intel Core i9-14900K paired with the Intel Arc B390 presents a striking contrast in hardware capabilities within the context of Rust. The CPU is a high-end desktop part with 24 cores and 32 threads, a 3.20 GHz base clock, and a 6.00 GHz boost clock, placing it in the 95th percentile of all CPUs tested. In contrast, the Arc B390 is an integrated graphics solution based on the Panther Lake chip, with a 300 MHz base and 2500 MHz boost clock, sitting in the 9th percentile of all GPUs. This massive disparity immediately frames the analysis: the processor offers immense compute headroom, while the graphics subsystem is the primary bottleneck. The measured FPS data confirms this, as even at the lowest settings and resolution, the system does not achieve high frame rates, indicating that the GPU's 1536 shading units and 24 ROPs are the limiting factor rather than the CPU's 36 MB of shared L3 cache or its Raptor Lake architecture.

The CPU’s specifications suggest it is capable of handling the complex simulation and entity-tracking workloads that Rust is known for, but the frame rate is dictated by the graphics pipeline. The 24 cores and 32 threads provide substantial multi-threaded throughput, as evidenced by a Cinebench R23 multi-core score of 39399.5, but this power remains underutilized when the GPU cannot render frames quickly enough. The single-core performance, indicated by a Cinebench R23 single-core score of 2262.5 and a boost clock of 6.00 GHz, is also strong, which is relevant for games that rely on a primary simulation thread. However, the data shows that at 1080p Low, the average FPS is 76, which, while the highest recorded for this combo, is still modest and suggests that the CPU is waiting on the GPU at every frame. Therefore, in this configuration, the CPU role is to provide a stable foundation without introducing stutter, while the GPU role is to render frames, and it is the latter that governs the overall experience.

Settings Recommendations

The measured data provides a clear hierarchy for settings presets, and the optimal choice depends on whether the user prioritizes frame rate or visual fidelity. The benchmark results show that the Low preset at 1080p delivers an average of 76 FPS, which is the only configuration that breaks the 60 FPS threshold. This is a significant jump from the Medium preset, which averages 51 FPS at the same resolution. The performance cost of moving from Low to Medium is a 25 FPS drop, which is a substantial 33% reduction in frame rate. Given the integrated GPU's limited resources, this trade-off is steep. For a game like Rust, where responsiveness can be critical in player-versus-player encounters, the Low preset at 1080p is the only setting that provides a playable and smooth experience according to the data.

Moving to higher presets yields diminishing returns. The High preset at 1080p averages 43 FPS, which is 33 FPS lower than Low. The Ultra preset averages 33 FPS, which is less than half the frame rate of the Low preset. The data suggests that the visual improvements from Medium to High or Ultra do not justify the significant performance penalty, as the system is already struggling to maintain fluid motion. At 1440p, the Low preset averages 53 FPS, which is still playable but falls below the 60 FPS mark. The Medium preset at 1440p drops to 35 FPS, and High drops to 30 FPS. At 4K, even the Low preset only achieves 31 FPS, making any setting above Low technically unplayable by standard metrics. Therefore, the recommendation is clear: for the best experience, select the Low preset at 1080p, as it is the only setting that offers a consistent frame rate above 60 FPS. If a higher resolution is required, the Low preset at 1440p is the only viable option, but users must accept a frame rate in the 50s.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals a classic pattern of GPU-bound performance. At 1080p Low, the system averages 76 FPS. Moving to 1440p Low, the average drops to 53 FPS, a reduction of 23 FPS or approximately 30%. Moving to 4K Low, the average falls to 31 FPS, which is a further drop of 22 FPS from 1440p, and a total drop of 45 FPS from 1080p. This scaling is consistent with a GPU that is being overwhelmed by the increasing pixel count. The 4K resolution has approximately four times the pixels of 1080p, and the average FPS at Low settings drops by roughly 59%, which is less than the full pixel-count penalty but still indicates that the render output units (ROPs) and texture units (TMUs) are saturated.

The same pattern holds for the Medium preset. At 1080p, the average is 51 FPS, dropping to 35 FPS at 1440p and 21 FPS at 4K. This represents a 31% drop from 1080p to 1440p and a 40% drop from 1440p to 4K. The consistent relative drops across different settings suggest that the limiting component is the GPU’s fixed-function hardware, specifically the 24 ROPs and 48 TMUs, rather than the shading units or memory bandwidth. The data indicates that the CPU is not the bottleneck in this scaling, as the i9-14900K is more than capable of feeding frames at these rates. The fact that the frame rate drops almost linearly with the increase in resolution, rather than flattening out, confirms that the integrated GPU is the primary constraint. The system is not CPU-limited at any resolution, as the CPU has ample headroom to process the game logic, but the GPU cannot keep up with the rendering demands.

FAQ

Q: What is the highest average frame rate this combo can achieve in Rust?

A: The highest measured average frame rate is 76 FPS, achieved at 1920x1080 resolution with the Low settings preset.

Q: Is the Intel Core i9-14900K or the Intel Arc B390 the limiting factor in this game?

A: The data indicates the Intel Arc B390 is the limiting factor. The GPU sits in the 9th percentile of all GPUs, while the CPU is in the 95th percentile, and frame rates scale heavily with resolution, which is characteristic of a GPU bottleneck.

Q: Can this system run Rust at 4K resolution smoothly?

A: No, the measured data shows that at 3840x2160, even the Low preset only achieves an average of 31 FPS, and the Ultra preset drops to 13 FPS. These frame rates are not considered smooth for a survival game.

Q: How does the Low preset compare to the Ultra preset at 1080p?

A: The Low preset at 1080p averages 76 FPS, which is more than double the 33 FPS average of the Ultra preset. This represents a 43 FPS difference, showing a significant performance cost for higher visual quality.

Q: What is the performance range for the Medium preset at 1440p?

A: The Medium preset at 2560x1440 has an average frame rate of 35 FPS, with a minimum of 30 FPS and a maximum of 41 FPS, based on the measured rows.

Q: Does the GPU have dedicated VRAM for this game?

A: No, the Intel Arc B390 uses System Shared memory, which means its memory size, type, and bus width are all listed as "System Shared," and bandwidth is "System Dependent."

GPU Role

The Intel Arc B390 GPU is unequivocally the performance bottleneck in this configuration. Its benchmark data is sparse, with only a single 3DMark Steel Nomad DX12 score of 1482, which places it in the 9th percentile of all GPUs. This score is comparable to the NVIDIA GeForce GT 520MX, which is only 1.3% behind, and the GeForce 800M, which is 1.5% behind. These are legacy or entry-level mobile parts, which contextualizes the GPU's capability. The GPU has 1536 shading units, 48 TMUs, and 24 ROPs, with a boost clock of 2500 MHz. The pixel rate is 60.00 GPixel/s and the texture rate is 120.0 GTexel/s, with an FP32 throughput of 7.680 TFLOPS. These specifications, while modern for an integrated GPU, are simply insufficient for a demanding title like Rust.

The GPU's role in Rust is to handle the rendering of the world, including the terrain, structures, and dynamic entities. The data shows that even at the lowest settings, the GPU is stressed. At 1080p Low, the system achieves 76 FPS, which is the maximum, but this is the only setting that allows the GPU to operate at a comfortable level. The 3DMark score indicates that the GPU's raw compute power is limited, and this translates directly to the FPS results. The memory being "System Shared" means that the GPU is competing with the CPU for memory bandwidth, which can further impact performance, though the exact impact is not quantified in the data. The GPU's TDP is 80 W, and it has no power connectors, confirming its integrated nature. The data suggests that for any playable experience, the GPU must be paired with the Low preset, as higher presets introduce a rendering load that the 24 ROPs cannot handle, leading to the dramatic FPS drops observed.

Measured FPS Breakdown

The measured FPS data provides a comprehensive view of the system's performance across three resolutions and four settings presets. At 1920x1080, the results are as follows: the Low preset averages 76 FPS, which is the highest score in the entire dataset. The Medium preset averages 51 FPS, with a minimum of 44 FPS and a maximum of 59 FPS. The High preset averages 43 FPS, and the Ultra preset averages 33 FPS. This shows a clear step-down in performance as settings increase. The difference between Low and Medium is 25 FPS, the difference between Medium and High is 8 FPS, and the difference between High and Ultra is 10 FPS. The data suggests that the Low preset is uniquely positioned to provide a fluid experience, while all other presets fall below the 60 FPS threshold.

At 2560x1440, the performance drops across all presets. The Low preset averages 53 FPS, which is a 23 FPS reduction from 1080p. The Medium preset averages 35 FPS, with a minimum of 30 FPS and a maximum of 41 FPS. The High preset averages 30 FPS, and the Ultra preset averages 23 FPS. The relative performance gap between Low and Medium remains consistent at 18 FPS, but the overall numbers are lower. At 3840x2160, the results are significantly lower. The Low preset averages 31 FPS, the Medium preset averages 21 FPS, with a minimum of 18 FPS and a maximum of 24 FPS, the High preset averages 18 FPS, and the Ultra preset averages 13 FPS. This final set of data points confirms that 4K is not viable for this combo, as even the Low preset fails to reach 32 FPS. The data across all resolutions shows a consistent pattern: the GPU is the limiting factor, and the Low preset at 1080p is the only configuration that yields an average frame rate above 60 FPS.

How This Combo Ranks

In the grand scheme of tested hardware combinations for Rust, this pairing of the Intel Core i9-14900K and the Intel Arc B390 ranks very low. The combo rank is 2601 out of 2953 tested combos, placing it in the bottom 12% of all systems. This low ranking is overwhelmingly attributable to the GPU, given that the CPU is a top-tier part. The CPU's percentile rank of 95 versus the GPU's percentile rank of 9 highlights this disparity. The combination of a high-end CPU with a low-end integrated GPU results in a system that is fundamentally unbalanced for gaming, and the ranking reflects this. The data indicates that the CPU is not contributing to a higher rank because the GPU cannot translate its processing power into frame rate.

When examining the GPU's nearest rivals, it is clear that the Arc B390 competes with very old or low-power parts. The GT 520MX and GT 710 are from a different era of graphics hardware, yet their benchmark scores are within a few percentage points of the Arc B390. This means that in Rust, the system is likely to perform similarly to those older configurations, which is not a positive indicator for modern gaming. The CPU's nearest rivals, such as the Core i9-14900KF, score nearly identically in synthetic benchmarks, but this does not matter in this context because the GPU is the limiting factor. The combo rank of 2601 suggests that users with this configuration will be at a significant disadvantage in Rust, and the measured FPS data confirms that even the best-case scenario (1080p Low) is only marginally playable. The system is not competitive with other tested combos, and the bottleneck is unequivocally the integrated GPU.