Rust

The data places this combination in a very specific position: the AMD Ryzen 9 7900X is a high-end desktop processor, while the Intel Arc B390 is an integrated graphics solution with a benchmark percentile ranking in the single digits. For Rust, this creates a severe imbalance where the CPU's potential is almost entirely irrelevant to the final frame rate. The recorded measurements show that only one configuration clears the 60 FPS playable threshold, and it does so at the lowest possible settings.

Measured FPS Breakdown

At 1920x1080, the resolution where this system is most viable, the average frame rates are as follows. With Low settings, the game runs at an average of 76 FPS. This is the only preset across all resolutions that exceeds the 60 FPS playable threshold. Moving to Medium settings drops the average to 51 FPS, with a recorded minimum of 44 FPS and a maximum of 59 FPS. High settings produce an average of 43 FPS, and Ultra settings fall to an average of 33 FPS. The scaling between presets is steep: Low to Medium is a 25 FPS drop, and Medium to High is another 8 FPS drop.

At 2560x1440, the performance picture deteriorates significantly. Low settings produce an average of 53 FPS, which is below the playable threshold but still close to it. Medium settings drop to an average of 35 FPS, with a minimum of 30 FPS and a maximum of 41 FPS. High settings average 30 FPS, and Ultra settings average 23 FPS. The gap between Low and Medium here is 18 FPS, indicating that the integrated GPU is already heavily taxed at this resolution.

At 3840x2160, all presets are firmly in unplayable territory. Low settings average 31 FPS. Medium settings average 21 FPS, with a minimum of 18 FPS and a maximum of 24 FPS. High settings average 18 FPS, and Ultra settings average 13 FPS. The difference between Low and Ultra at this resolution is only 18 FPS, showing that the graphics processor is the limiting factor across the board, not the settings themselves. The data shows a clear pattern: the Arc B390 cannot sustain playable frame rates above 1080p in Rust.

CPU and GPU Roles

The component roles are unambiguous. The Ryzen 9 7900X is a 12-core, 24-thread processor from the Zen 4 architecture, with a benchmark percentile of 91 against all CPUs. Its closest rivals in the database include the Intel Core i7-14700F and the AMD EPYC 7313P, with average score deltas of -0.6% and +0.2% respectively. This CPU is not the bottleneck in any scenario tested.

The Intel Arc B390, by contrast, is an integrated GPU with a benchmark percentile of 9 against all GPUs. Its nearest rivals are all low-end discrete or integrated parts: the NVIDIA GeForce GT 520MX, the GeForce 800M, the GeForce GT 625 OEM, and the GeForce GT 710. The delta percentages are small, ranging from +1.3% to +2.7%, meaning these parts perform within a few percent of each other. The Arc B390's 3DMark Steel Nomad DX12 score of 1482 places it in a performance class that is simply not suited for demanding titles like Rust.

The recorded data confirms this split. When comparing 1080p Low to 1440p Low, the average FPS drops from 76 to 53, a 30% reduction. When comparing 1440p Low to 2160p Low, the average drops from 53 to 31, a 42% reduction. These scaling penalties are entirely consistent with a GPU-bound workload. If the CPU were the limiting factor, the frame rate would remain relatively flat across resolutions. Instead, every increase in pixel count produces a proportional decrease in performance, which points directly at the integrated graphics unit as the dominant constraint.

At 1080p, the difference between Low and Medium is 25 FPS, while the difference between Medium and High is only 8 FPS. This suggests that the GPU has very little headroom once the settings are raised. At 1440p and 2160p, the same pattern holds: the largest performance gap is always between Low and Medium, with diminishing returns as settings increase. The CPU's role is effectively neutralized; it waits for the GPU to finish each frame. The data shows that any performance gains from the Ryzen 9 7900X's strong single-threaded and multi-threaded scores, such as its Cinebench R23 multi-core score of 29300 and single-core score of 2016.5, do not translate into playable frame rates because the GPU cannot keep up.

FAQ

Q: Can this system run Rust at 60 FPS at 1920x1080?

A: Yes, but only with Low settings. The recorded average FPS at 1080p Low is 76, which clears the 60 FPS threshold. Medium settings drop to 51 FPS, which is below the playable mark.

Q: What is the best frame rate this combination achieves at 2560x1440?

A: The highest average at 1440p is 53 FPS, achieved with Low settings. This is below the 60 FPS playable threshold, meaning no preset at this resolution is considered playable.

Q: Is the Ryzen 9 7900X or the Intel Arc B390 the bottleneck in Rust?

A: The benchmark data indicates the GPU is the limiting factor. The frame rates drop sharply as resolution increases, which is characteristic of a GPU-bound scenario. The CPU is in the 91st percentile of all processors, while the GPU is in the 9th percentile.

Q: How does the Arc B390 compare to its nearest GPU rivals?

A: The Arc B390's nearest rivals are the NVIDIA GeForce GT 520MX, GeForce 800M, GeForce GT 625 OEM, and GeForce GT 710. The average score deltas are between +1.3% and +2.7%, meaning the Arc B390 is slightly faster than these parts but within the same performance class.

Q: What is the lowest average FPS recorded for this system?

A: The lowest average is 13 FPS, recorded at 3840x2160 with Ultra settings. This is the only preset where the average falls below 20 FPS.

Q: Does the CPU's strong multi-threaded performance help in Rust?

A: Not in a meaningful way for this configuration. The Ryzen 9 7900X has a Cinebench R23 multi-core score of 29300, but the GPU's low performance prevents the CPU from contributing to higher frame rates. The frame rate is consistently tied to resolution and settings, not CPU workload.

The Verdict

This system cannot run Rust at a playable level in most configurations. The verdict data is clear: at 3840x2160, there are no playable settings, meaning no preset reaches 60 FPS. At 2560x1440, the same is true: no playable settings exist. At 1920x1080, only Low settings are considered playable, with an average FPS of 76.

For users targeting 1080p, the answer is a conditional yes. Low settings deliver a comfortable margin above the 60 FPS threshold, but any attempt to increase visual quality will result in sub-60 FPS performance. At 1440p and 2160p, the system is not viable for this game. The Arc B390, despite being paired with a very capable CPU, simply does not have the rendering power to handle Rust at higher resolutions. The data suggests that this combination is suitable only for the most basic visual settings at the lowest resolution.

Similar Performance Alternatives

The nearest rivals for the CPU and GPU provide context for what similar hardware would behave like. For the Ryzen 9 7900X, the closest matches in the database are the AMD EPYC 7313P with an average score delta of +0.2%, the Intel Xeon 634 with a delta of +0.6%, the Intel Xeon Phi 7290 with a delta of -0.3%, and the Intel Core i7-14700F with a delta of -0.6%. These processors would all deliver nearly identical CPU performance in Rust, meaning the frame rate would still be entirely determined by the GPU.

For the Intel Arc B390, the nearest rivals are the NVIDIA GeForce GT 520MX (+1.3%), the NVIDIA GeForce 800M (+1.5%), the NVIDIA GeForce GT 625 OEM (+2.5%), and the NVIDIA GeForce GT 710 (+2.7%). These GPUs would produce very similar frame rates in Rust. The delta percentages are so small that any of these parts would fall within a few FPS of the Arc B390 in the same test conditions. Users with any of these GPUs paired with a high-end CPU should expect the same outcome: playable only at 1080p Low, and not playable at higher resolutions.

The practical takeaway is that swapping the Ryzen 9 7900X for one of its rivals would change nothing in Rust, since the GPU is the limiting factor. Conversely, upgrading the GPU from the Arc B390 to something significantly faster would be the only way to improve the frame rates recorded here.

Best Settings per Resolution

At 3840x2160, no settings are playable. The highest average FPS is 31 with Low settings, but this falls well short of the 60 FPS threshold. Therefore, there is no recommended preset for this resolution.

At 2560x1440, no settings are playable either. Low settings provide an average of 53 FPS, which is close but still below the threshold. Medium, High, and Ultra all average below 40 FPS. The data does not support recommending any preset at this resolution.

At 1920x1080, the only playable preset is Low, with an average FPS of 76. This is the most demanding preset that stays at or above 60 FPS. Medium settings average 51 FPS, which is below the threshold, so Low is the clear recommendation. The recorded minimum for 1080p Low is not available, but the average of 76 FPS provides a 16 FPS margin over the playable threshold. This is the only configuration in the entire dataset where this hardware can run Rust smoothly.