Rust

The Intel Core i5-10400F paired with the AMD Radeon RX 7800 XT delivers a broad performance envelope in Rust, scaling from highly playable 1080p framerates to demanding 4K presentations. This analysis breaks down the measured results to understand where the bottleneck lies and which settings offer the most balanced experience.

Resolution Scaling

The measured FPS data reveals a clear and consistent scaling pattern as resolution increases, pointing to a system that becomes progressively more GPU-bound at higher pixel counts. At 1080p with Low settings, the combo produces 146.4 FPS. Moving to 1440p drops this to 131.4 FPS, a reduction of 15 FPS or roughly 10.2%. Pushing further to 4K yields 79.3 FPS, which is a substantial 67.1 FPS drop from the 1440p figure.

The trend is consistent across all settings. At High, the sequence is 117.5 FPS at 1080p, 77.6 FPS at 1440p, and 45.4 FPS at 4K. The gap between 1440p and 4K is particularly pronounced, with the 4K result less than 60% of the 1440p figure. This indicates that while the RX 7800 XT has ample headroom at 1080p and 1440p, the 4K resolution begins to saturate its capabilities, especially with higher graphical presets.

The scaling behavior suggests that at 1080p, the CPU is playing a more significant role in limiting performance. The difference between Low (146.4 FPS) and Ultra (90.2 FPS) at 1080p is only 56.2 FPS, whereas at 4K, the same settings range spans from 79.3 FPS down to 35.2 FPS, a 44.1 FPS spread. At lower resolutions, the framerate ceiling is closer, implying that the Core i5-10400F's processing power is the constraining factor. As resolution climbs, the GPU's workload increases, and the framerate differences between presets widen, confirming the GPU becomes the primary bottleneck at 4K.

CPU Role

The Intel Core i5-10400F provides the processing foundation for this combo. It is a 6-core, 12-thread part with a base clock of 2.90 GHz and a boost clock of 4.30 GHz. Its synthetic benchmark scores show a balanced profile; the Cinebench R23 multicore score of 10297 and single-core score of 1453 indicate it is a competent performer for gaming workloads. The CPU's percentile ranking against all CPUs is 73, placing it in the upper quartile of processors.

In Rust, the CPU's influence is most apparent in the 1080p results. The game's simulation and world logic are single-thread sensitive, and the i5-10400F's single-thread performance, reflected in a PassMark single-thread score of 2541, helps maintain high framerates at lower resolutions. The data shows that at 1080p, even with Low settings, the system only reaches 146.4 FPS, suggesting a ceiling imposed by the CPU rather than the GPU. This is a classic sign of a CPU bottleneck, where the GPU is waiting for the processor to feed it data.

At higher resolutions, the CPU's relative importance diminishes. The 4K Low preset still manages 79.3 FPS, which is more than half of the 1080p Low result. This indicates that while the CPU is still a factor, the GPU's rendering workload takes precedence. The i5-10400F's 12 MB of shared L3 cache and dual-channel DDR4 memory support are adequate for Rust's demands, but the data suggests that for users targeting maximum framerates at 1080p, a higher-clocked CPU would yield benefits. As it stands, the 6-core/12-thread configuration is sufficient to keep the RX 7800 XT well-fed at 1440p and 4K.

GPU Role

The AMD Radeon RX 7800 XT is the primary driver of visual performance in this pairing. Its 16 GB of GDDR6 memory on a 256-bit bus provides 624.1 GB/s of bandwidth, which is critical for high-resolution textures. The GPU's RDNA 3.0 architecture, built on a 5 nm process, features a boost clock of 2430 MHz and a game clock of 2124 MHz. Its 3840 shading units and 96 ROPs deliver a pixel rate of 233.3 GPixel/s and a texture rate of 583.2 GTexel/s, making it a high-end part in its generation.

The GPU's role becomes clear when analyzing the settings scaling at each resolution. At 4K, the jump from Low (79.3 FPS) to Medium (54.8 FPS) to High (45.4 FPS) and finally to Ultra (35.2 FPS) demonstrates the GPU's workload sensitivity. The difference between Low and Ultra at 4K is a substantial 44.1 FPS, showing that the RX 7800 XT is the limiting factor at this resolution. The 16 GB VRAM is unlikely to be a constraint in Rust at these settings, but the raw compute power is what dictates the framerate.

At 1080p, the GPU's power is less taxed, with the Ultra preset still achieving 90.2 FPS. The RX 7800 XT's PassMark G3D score of 24176 and its percentile ranking of 76 against all GPUs confirm its high-end status. The data indicates that the GPU is strong enough to handle 1440p High settings with ease, where it produces 77.6 FPS, and only begins to struggle with the most demanding 4K Ultra preset. The combination of high bandwidth and compute throughput makes this GPU the dominant component in the system for most of the tested scenarios.

How This Combo Ranks

Within the database of tested combinations, this specific pairing of the Intel Core i5-10400F and AMD Radeon RX 7800 XT holds a rank of 694 out of 1717 combos. This places it in the 60th percentile of all tested systems, meaning it outperforms a majority of configurations but is not at the very top tier. The rank reflects a balance between the CPU's mid-range standing and the GPU's upper-mid-range position.

The CPU's nearest rivals provide context for its performance tier. The AMD EPYC 7552 is just 0.4% ahead in average score, while the AMD Ryzen 3 7320C and Intel Core i5-8500 are 0.8% and 1.1% behind, respectively. This shows the i5-10400F is competitive with a wide range of processors. On the GPU side, the RX 7800 XT's nearest rivals include the AMD FirePro S9300 X2 (0.2% ahead) and the NVIDIA P104-100 (0.4% behind), suggesting the GPU sits in a tight performance cluster.

The combined rank of 694 indicates that while neither component is the absolute fastest in its class, their pairing creates a capable system for Rust. The fact that the combo ranks in the top 40% of all tested combos suggests that the balance between the 6-core CPU and the 16 GB GPU is well-suited for the game's demands, offering a level of performance that should satisfy most players.

Settings Recommendations

Analyzing the measured rows, the most balanced experience is found at 1440p with High settings, yielding 77.6 FPS. This provides a solid framerate while taking advantage of the higher resolution. For users seeking maximum smoothness, the 1080p Medium preset at 127.2 FPS or High at 117.5 FPS are excellent choices, offering high framerates with improved visual fidelity over Low settings.

At 4K, the options are more constrained. The Low preset at 79.3 FPS is the only 4K setting that achieves a framerate above 60 FPS. The Medium preset drops to 54.8 FPS, which may be acceptable for some, but it is a noticeable step down in smoothness. For a consistent 60+ FPS experience at 4K, the Low preset is the clear recommendation, as it provides a playable framerate without compromising too heavily on resolution.

For users who prioritize visual quality over raw speed, 1440p Ultra at 59.4 FPS is a viable option, though it sits just below the 60 FPS threshold. The data suggests that the "sweet spot" for this combo is 1440p, where the GPU can handle High settings comfortably and even Ultra with a slight framerate compromise. At 1080p, the CPU becomes a limiting factor, so there is little benefit to lowering settings below Medium, as the framerate gains are relatively modest. The overall recommendation is to target 1440p for the best combination of image quality and performance, with High settings offering the most stable experience.

Measured FPS Breakdown

The full set of measured results provides a comprehensive view of the combo's performance across all tested configurations.

At 1920x1080, the framerates are as follows:

• Low: 146.4 FPS
• Medium: 127.2 FPS
• High: 117.5 FPS
• Ultra: 90.2 FPS

The spread between Low and Ultra at 1080p is 56.2 FPS, showing that settings have a moderate impact at this resolution. The system is clearly capable of high refresh-rate gaming here, with even Ultra settings exceeding 90 FPS.

At 2560x1440, the results are:

• Low: 131.4 FPS
• Medium: 93.9 FPS
• High: 77.6 FPS
• Ultra: 59.4 FPS

The 1440p results show a wider variance, with the difference between Low and Ultra reaching 72 FPS. This resolution allows the GPU to flex its muscles, with Low settings easily exceeding 120 FPS and Ultra just missing the 60 FPS mark.

At 3840x2160, the measured framerates are:

• Low: 79.3 FPS
• Medium: 54.8 FPS
• High: 45.4 FPS
• Ultra: 35.2 FPS

The 4K results clearly show the GPU's limits. Only the Low preset achieves a framerate above 60 FPS, while the Ultra preset drops to just over half that figure. The scaling from 1440p to 4K is steep, with the High preset dropping from 77.6 FPS to 45.4 FPS, a 32.2 FPS reduction. This data confirms that the RX 7800 XT is a capable 1440p card that can handle 4K only with significant graphical compromises.