Rust

The AMD Ryzen 7 7800X3D paired with the Intel Arc B390 presents an unusual combination: a top-tier desktop processor paired with an integrated-class mobile GPU. Benchmark results for Rust show that this pairing is severely constrained by the graphics side, with the CPU’s capabilities largely left untapped. The data reveals a system that can handle the game only at its lowest graphical settings and only at 1080p, falling short of the 60 FPS threshold at every other resolution and preset combination.

Best Settings per Resolution

At 3840x2160, no preset achieves a playable frame rate. The highest recorded average is 31 FPS at Low settings, which is still far below the 60 FPS target. The Medium preset delivers an average of 21 FPS, while High drops to 18 FPS and Ultra bottoms out at 13 FPS. None of these configurations come close to the playable threshold, so the database records no best settings for this resolution.

At 2560x1440, the situation improves marginally but remains below the playable bar. Low settings produce an average of 53 FPS, the best result at this resolution, yet it still misses the 60 FPS mark. Medium averages 35 FPS, High averages 30 FPS, and Ultra averages 23 FPS. As with 4K, the verdict is that no settings are playable at 1440p.

At 1920x1080, the system finally crosses the threshold. Low settings deliver an average of 76 FPS, making it the only playable configuration in the entire dataset. Medium settings average 51 FPS, which is below 60, and High averages 43 FPS. Ultra averages 33 FPS. Therefore, the best settings for 1080p are Low, with a recorded average of 76 FPS.

CPU and GPU Roles

The recorded data makes it clear that the Intel Arc B390 is the dominant bottleneck in this system. Rust’s frame rates scale almost entirely with resolution and graphics preset, which are GPU-bound parameters. The CPU, an AMD Ryzen 7 7800X3D with 8 cores and 16 threads, is a high-performance desktop part with a 96 MB shared L3 cache and a boost clock of 5.00 GHz. Its benchmark scores, such as a Cinebench R23 multi-core score of 16817 and a single-core score of 1713, indicate ample processing headroom.

The GPU, by contrast, is an integrated graphics solution based on the Xe3-LPG architecture, with 1536 shading units and a boost clock of 2500 MHz. Its sole benchmark score, 1482 in 3DMark Steel Nomad DX12, places it in the 9th percentile of all GPUs. This massive disparity in capability explains why the system behaves like a GPU-limited machine despite having an enthusiast-grade CPU.

Evidence for this comes from the scaling between resolutions. Moving from 1080p Low to 1440p Low drops the average from 76 FPS to 53 FPS, a 30% reduction. Moving from 1440p Low to 4K Low drops the average from 53 FPS to 31 FPS, another 41% reduction. These steep declines are classic signs of a GPU that is overwhelmed by pixel count. Similarly, within a single resolution, raising the preset from Low to Ultra cuts performance dramatically: at 1080p, the average falls from 76 to 33 FPS (a 57% drop); at 1440p, from 53 to 23 FPS (a 57% drop); and at 4K, from 31 to 13 FPS (a 58% drop). The consistency of these percentage drops across resolutions further confirms that the GPU is the limiting factor.

The CPU’s role is essentially passive in this configuration. Since the GPU cannot push frame rates high enough to stress the processor, the Ryzen 7 7800X3D’s strong multi-threaded and single-threaded performance never becomes the primary constraint. The database shows no scenario where the CPU would be the bottleneck; instead, the GPU’s low throughput caps all results. If the GPU were replaced with a stronger part, the 7800X3D would likely allow for significantly higher frame rates, but with the Arc B390, the CPU’s potential is wasted.

How This Combo Ranks

The combination of the AMD Ryzen 7 7800X3D and Intel Arc B390 ranks 3312 out of 3723 tested combos for Rust. This places it in the bottom 11% of all systems in the database, a poor showing that reflects the GPU’s severe limitations. The rank is driven almost entirely by the GPU’s low benchmark score, which sits in the 9th percentile of all GPUs.

To contextualize the CPU’s contribution, the Ryzen 7 7800X3D itself ranks in the 83rd percentile of all CPUs, with an average benchmark score of 33079. This is a strong result, comparable to the AMD Ryzen 7 8700G and Intel Core i7-13650HX, both of which have identical average scores of 33089. The CPU is clearly not the problem. However, the combo’s overall rank is dragged down by the GPU, which has an average score of just 1482. The disparity between the two components is extreme: the CPU is in the top quartile, while the GPU is in the bottom decile. This mismatch results in a system that performs far worse than its processor alone would suggest, and the database rank reflects that reality.

Similar Performance Alternatives

For the CPU, the nearest rivals in the database are the AMD Ryzen 7 8700G, the Intel Core i7-13650HX, and the AMD Ryzen 7 7745HX. All three have average scores within a negligible margin of the 7800X3D: the 8700G and 13650HX both score 33089 (a 0% delta), and the 7745HX scores 33091 (also a 0% delta). The AMD Ryzen 9 PRO 6950H is slightly behind at 33201, which is a negative delta of 0.4%. In practical terms, any of these processors would exhibit nearly identical CPU-bound behavior in Rust. Since the GPU is the bottleneck, swapping the 7800X3D for any of these rivals would yield virtually the same frame rates in the measured scenarios.

For the GPU, the nearest rivals are all older, low-end NVIDIA parts. The GeForce GT 520MX has an average score of 1463, which is 1.3% lower than the Arc B390’s 1482. The GeForce 800M scores 1460, a 1.5% deficit. The GeForce GT 625 OEM scores 1446, a 2.5% deficit, and the GeForce GT 710 scores 1443, a 2.7% deficit. These deltas are tiny, meaning that any of these GPUs would perform almost identically to the Arc B390 in Rust. None of them would change the fundamental conclusion that the system is GPU-limited and unable to hit 60 FPS above 1080p Low. The data shows that the Arc B390 is effectively in the same performance class as these decade-old entry-level cards, despite being a newer integrated solution.

Measured FPS Breakdown

At 3840x2160, the recorded averages are as follows: Low settings produce 31 FPS, Medium produces 21 FPS with a minimum of 18 and a maximum of 24, High produces 18 FPS, and Ultra produces 13 FPS. The Medium preset is the only one at this resolution with recorded min and max values, indicating a narrow band of 18 to 24 FPS.

At 2560x1440, Low settings average 53 FPS, Medium averages 35 FPS with a range of 30 to 41, High averages 30 FPS, and Ultra averages 23 FPS. The Medium preset again shows the only min and max data, spanning 30 to 41 FPS. None of these averages reach the 60 FPS threshold.

At 1920x1080, Low settings average 76 FPS, which is the only playable result. Medium averages 51 FPS with a range of 44 to 59, High averages 43 FPS, and Ultra averages 33 FPS. The Medium preset’s maximum of 59 FPS is just one frame short of the 60 FPS target, highlighting how close the system comes to playability at that setting. Low, however, clears the bar with a 16 FPS margin over the threshold.

Across all resolutions, the pattern is consistent: each step up in preset costs roughly 10 to 15 FPS on average, and each step up in resolution costs a similar amount. The only combination that satisfies the 60 FPS requirement is 1080p with Low settings.

The Verdict

Can this PC run Rust? The answer depends entirely on the resolution and settings. Based on the verdict data, the system is playable only at 1920x1080 with Low settings, where it achieves an average of 76 FPS. This is the sole configuration in the entire dataset that clears the 60 FPS threshold.

At 2560x1440, no settings are playable. The best result is 53 FPS at Low, which falls 7 FPS short of the target. At 3840x2160, the situation is worse, with the best result being 31 FPS at Low, less than half of the required frame rate. The verdict for both 1440p and 4K is that no playable settings exist.

In summary, this combination of a high-end CPU and an entry-level integrated GPU is fundamentally unbalanced for Rust. The Ryzen 7 7800X3D provides more than enough processing power, but the Intel Arc B390 cannot translate that into acceptable frame rates at higher resolutions or quality settings. Users who accept 1080p Low will get a playable experience, but anyone expecting 1440p or 4K performance, or even 1080p at Medium settings, will be disappointed. The database verdict is clear: 1080p Low is the only viable path, and even then, the margin is modest. For smoother gameplay at higher settings, a more capable discrete GPU would be required, as the current graphics solution is the definitive limiting factor.