Rust

Rust is a demanding survival title that punishes both CPU and GPU heavily, and the combination of the Intel Core i5-12400F with the AMD Radeon RX 6800 XT produces a wide spread of results depending on how you configure it. The measured data shows a system that is capable of high refresh rate play at 1080p, but which requires careful settings management to maintain playable frame rates at 4K. The performance scaling across resolutions and presets indicates a balanced pairing where neither component completely dominates the other, though the GPU becomes the primary constraint as resolution climbs. This analysis breaks down exactly what the numbers mean for practical play, from the best preset to the specific FPS counts at each resolution.

Settings Recommendations

The measured rows make it clear that the Ultra preset is a performance trap in Rust with this hardware. At 1920x1080, Ultra delivers an average of 89.9 FPS, which is playable but leaves significant headroom on the table. The jump from High to Ultra at 1080p costs 27.9 FPS, a 23.7% reduction for visual gains that are often marginal in a game where visibility of distant players matters more than texture fidelity. At 2560x1440, the Ultra preset drops to 64.2 FPS, and at 4K it falls to 34.7 FPS, which is below the threshold for smooth gameplay in a competitive survival setting.

The High preset is the sweet spot for this configuration. At 1080p, High produces 117.8 FPS, which is 27.9 FPS more than Ultra and only 22.9 FPS less than Low. At 1440p, High maintains 82.3 FPS, which is comfortably above the 60 FPS baseline for responsive play. The Medium preset offers a middle ground: 140.7 FPS at 1080p and 93.7 FPS at 1440p, but it sacrifices some visual clarity that helps spot enemies at range. The data suggests High is the best experience because it balances the 117.8 FPS at 1080p and 82.3 FPS at 1440p with the visual quality needed for a survival game where situational awareness is critical. Low settings at 1080p hit 205.3 FPS, which is excellent for competitive play, but the visual downgrade makes it harder to spot subtle environmental details.

For 4K, the situation is different. High settings at 3840x2160 yield only 47.9 FPS, which is below the 60 FPS target. Medium at 4K gives 59.6 FPS, which is borderline playable but not ideal. The only way to get a smooth 4K experience is Low settings, which produce 86.7 FPS. Given the hardware, the recommendation is to use High at 1080p or 1440p, and to drop to Medium or Low at 4K depending on whether you prioritize visual fidelity or frame rate stability.

GPU Role

The AMD Radeon RX 6800 XT is a substantial piece of silicon, built on the RDNA 2.0 architecture with a Navi 21 chip manufactured on a 7 nm process. It carries 16 GB of GDDR6 memory on a 256 bit bus, delivering 512.0 GB/s of bandwidth. The base clock runs at 1825 MHz, with a boost clock of 2250 MHz and a game clock of 2015 MHz. These specifications put it in the 87th percentile of all GPUs, and its average benchmark score of 49982 places it 2.6% ahead of the NVIDIA GeForce RTX 4070 Ti SUPER, which scores 48704. The data shows that the GPU is not the limiting factor at 1080p, where even Ultra settings produce 89.9 FPS, but it becomes the primary constraint at 4K.

The 16 GB VRAM buffer is a significant asset in Rust, which is known for loading large world textures and maintaining persistent server data. The memory clock of 2000 MHz, translating to 16 Gbps effective, ensures that texture streaming does not become a bottleneck. The GPU’s compute capabilities are substantial, with 4608 shading units, 288 TMUs, and 128 ROPs, alongside 72 ray accelerators. The FP32 performance of 20.74 TFLOPS and texture rate of 648.0 GTexel/s are reflected in the benchmark results, particularly in the 3DMark Steel Nomad DX12 score of 3689. The GPU’s role becomes clear when comparing the FPS scaling: from 1080p High at 117.8 FPS to 1440p High at 82.3 FPS, the drop is 30.1%, which is consistent with the increased pixel count. From 1440p High to 4K High, the drop is 41.8%, showing that the GPU is increasingly stressed at higher resolutions.

Resolution Scaling

The measured FPS data reveals a predictable but steep degradation as resolution increases. At 1080p High, the system produces 117.8 FPS. Moving to 1440p High drops this to 82.3 FPS, a reduction of 35.5 FPS or 30.1%. Moving from 1440p to 4K High drops the average from 82.3 to 47.9 FPS, a reduction of 34.4 FPS or 41.8%. The same pattern holds across all settings. Low settings at 1080p hit 205.3 FPS, at 1440p they drop to 146.3 FPS (a 28.7% reduction), and at 4K they fall to 86.7 FPS (a 40.7% reduction from 1440p). Medium settings show 140.7 FPS at 1080p, 93.7 FPS at 1440p (33.4% drop), and 59.6 FPS at 4K (36.5% drop from 1440p). Ultra is the harshest: 89.9 FPS at 1080p, 64.2 FPS at 1440p (28.6% drop), and 34.7 FPS at 4K (46% drop from 1440p).

The scaling pattern indicates that the CPU is keeping up with the GPU at lower resolutions. At 1080p, the difference between Low and Ultra is 115.4 FPS, which shows that the GPU has significant headroom when the CPU is not fully taxed. At 4K, the difference between Low and Ultra narrows to 52 FPS, suggesting the GPU is becoming the primary bottleneck. The fact that 4K Low (86.7 FPS) is higher than 1080p Ultra (89.9 FPS) on the same preset scale tells you that the CPU can push high frame rates, but the GPU struggles to render at 4K Ultra. For players targeting high refresh rates, 1080p or 1440p is the ideal range, while 4K requires sacrificing settings to Low or Medium to stay above 60 FPS.

FAQ

Q: What is the best preset for competitive play at 1080p?

A: The Low preset at 1920x1080 produces an average of 205.3 FPS, which is the highest measured result. This gives the maximum frame rate for fast reaction times, though the visual quality is reduced.

Q: Can this system handle 4K gaming in Rust?

A: Yes, but only at reduced settings. At 3840x2160, the Low preset averages 86.7 FPS, while Medium averages 59.6 FPS. High and Ultra at 4K, at 47.9 FPS and 34.7 FPS respectively, fall below the 60 FPS threshold for smooth play.

Q: How does the CPU compare to its nearest rivals in synthetic benchmarks?

A: The Intel Core i5-12400F has an average benchmark score of 19221, which is 0.1% ahead of the Intel Core i7-8700K (19210) and 0.3% ahead of the Intel Core i5-1335U (19167). It trails the AMD Ryzen 5 7533HS by 0.7%, which scores 19364.

Q: How does the GPU compare to its nearest rivals in synthetic benchmarks?

A: The AMD Radeon RX 6800 XT has an average benchmark score of 49982, which is 2.6% ahead of the NVIDIA GeForce RTX 4070 Ti SUPER (48704) and 1.9% ahead of the NVIDIA CMP 50HX (49071). It trails the NVIDIA RTX A1000 by 1.7%, which scores 50826.

Q: What is the frame rate difference between Medium and High at 1440p?

A: At 2560x1440, the Medium preset averages 93.7 FPS, while the High preset averages 82.3 FPS. The difference is 11.4 FPS, with Medium being 13.9% faster.

Q: Is the CPU or GPU the limiting factor at 4K Ultra?

A: At 3840x2160 Ultra, the average FPS is 34.7, which is the lowest measured result. The steep drop from 1440p Ultra (64.2 FPS) to 4K Ultra (34.7 FPS) is a 46% reduction, indicating the GPU is the primary constraint at this resolution and settings combination.

CPU Role

The Intel Core i5-12400F is a 6-core, 12-thread processor based on the Alder Lake architecture, manufactured on a 10 nm process. It has a base clock of 2.50 GHz and a boost clock of 4.40 GHz, with a 65 W TDP. The cache layout includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 18 MB of shared L3 cache. In synthetic benchmarks, it scores 16518 in Cinebench R23 multicore and 2332 in single core, with a 3DMark max threads score of 5912. Its average benchmark score of 19221 places it in the 77th percentile of all CPUs, which is solid but not exceptional.

The CPU’s role in Rust is evident in the frame rates at lower resolutions. At 1080p Low, the system hits 205.3 FPS, which is a high enough frame rate that the CPU’s single-thread performance becomes relevant. The single-core score of 909 in 3DMark and 2332 in Cinebench R23 indicates that the processor can handle the game’s simulation and physics workload. The 12 threads help with background tasks and server communication, which are common in Rust. The measured data shows that the CPU does not bottleneck the GPU at 1080p, as the frame rate scales with settings, but at 4K the GPU takes over as the limiting factor. The CPU’s performance is consistent with its rivals: it is 0.1% faster than the Intel Core i7-8700K and 0.3% faster than the Intel Core i5-1335U, but 0.7% slower than the AMD Ryzen 5 7533HS. For Rust specifically, the CPU’s boost clock of 4.40 GHz provides enough headroom for the game’s single-threaded elements, while the 6 cores handle the multithreaded workload without issue.

Measured FPS Breakdown

The complete set of measured FPS results shows a clear hierarchy across resolutions and settings. At 1920x1080, the Low preset delivers the highest average at 205.3 FPS. Medium follows at 140.7 FPS, then High at 117.8 FPS, and finally Ultra at 89.9 FPS. The difference between Low and Ultra is 115.4 FPS, which demonstrates the significant impact of settings on frame rate. At 2560x1440, the same ordering applies: Low at 146.3 FPS, Medium at 93.7 FPS, High at 82.3 FPS, and Ultra at 64.2 FPS. The gap between Low and Ultra narrows to 82.1 FPS, indicating that the GPU is starting to struggle. At 3840x2160, the results are: Low at 86.7 FPS, Medium at 59.6 FPS, High at 47.9 FPS, and Ultra at 34.7 FPS. The gap between Low and Ultra is 52 FPS, confirming the GPU as the primary bottleneck.

The data also shows how each settings tier scales with resolution. Low settings at 1080p are 205.3 FPS, dropping to 146.3 FPS at 1440p (a 28.7% reduction) and then to 86.7 FPS at 4K (a 40.7% reduction from 1440p). Medium settings at 1080p are 140.7 FPS, dropping to 93.7 FPS at 1440p (33.4% reduction) and then to 59.6 FPS at 4K (36.5% reduction). High settings at 1080p are 117.8 FPS, dropping to 82.3 FPS at 1440p (30.1% reduction) and then to 47.9 FPS at 4K (41.8% reduction). Ultra settings at 1080p are 89.9 FPS, dropping to 64.2 FPS at 1440p (28.6% reduction) and then to 34.7 FPS at 4K (46% reduction). The consistent pattern across all settings shows that the system is well-balanced, with the CPU providing sufficient performance at lower resolutions and the GPU taking over as the resolution increases. For practical use, the data suggests that 1440p High is the most consistent experience, offering 82.3 FPS with good visual quality, while 1080p Low is the choice for maximum frame rates at 205.3 FPS.