Rust

The Intel Core i5-12400 is a 6-core, 12-thread Alder Lake processor with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. It features 18 MB of shared L3 cache and a 65 W TDP. In synthetic benchmarks, its average score of 19850 places it in the 77th percentile of all CPUs. The data shows it is virtually tied with the Intel Core i7-9700, holding a 0.1% advantage in average score. It also edges out the Intel Core i5-11600K by 0.4%, while trailing the Intel Core i7-8700 by a negligible 0.2%. This positioning indicates that the i5-12400 delivers performance nearly identical to older high-end mainstream parts, which is relevant for Rust—a game known for its heavy server-side and simulation logic that can tax multiple threads.

In Rust’s measured results, the CPU’s contribution becomes evident when examining the frame rate scaling across settings at a fixed resolution. At 1080p, the difference between Low and High settings is substantial, with average FPS dropping from 185.2 to 104.6. This gap suggests that while the GPU is being pushed harder at higher settings, the processor still has headroom to feed it. However, the jump from High to Ultra at 1080p, which reduces average FPS from 104.6 to 79.5, indicates that the combination of higher graphical fidelity and the game’s simulation load begins to strain the CPU’s 6-core configuration. The i5-12400’s 12 threads help maintain decent frame pacing, but the data implies that in demanding scenes, the CPU can become a bottleneck before the GPU is fully saturated.

CPU Role

The i5-12400’s specifications—6 cores, 12 threads, and a 4.40 GHz boost—provide a solid foundation for Rust’s CPU-intensive nature. The game’s world simulation, including entity processing and physics, often scales with core count, and the 12 threads here offer a clear advantage over older 6-core/6-thread parts. Benchmark results reinforce this: the CPU’s multi-threaded 3DMark score of 5890 is more than triple its single-thread score of 910, showing strong parallel scaling. In Cinebench R23, the multicore score of 15935 versus a single-core score of 2249 further demonstrates that the processor can leverage all its threads effectively.

When analyzing the 1080p results, the CPU’s role becomes clearer. Moving from Low (185.2 FPS) to Medium (122.7 FPS) represents a 34% drop in performance, which is a larger relative decline than the step from Medium to High (122.7 to 104.6, a 15% drop). This pattern suggests that at Low settings, the GPU is not the limiting factor; instead, the CPU is able to push very high frame rates, but the game’s engine still imposes a ceiling. The fact that Ultra at 1080p yields 79.5 FPS—only 24% lower than High—indicates that the CPU is still keeping up reasonably well, but the additional load from Ultra settings (likely shadows and draw distances) starts to bottleneck the 6-core design. The i5-12400’s 18 MB of L3 cache helps mitigate some of this, but the measured data shows a clear trend: in Rust, this CPU can drive high refresh rates at lower settings but will struggle to maintain 100+ FPS at Ultra on a 1080p display.

GPU Role

The NVIDIA GeForce RTX 3070 is an Ampere-architecture GPU with 8 GB of GDDR6 memory on a 256-bit bus, delivering 448.0 GB/s of bandwidth. Its boost clock is 1725 MHz, and it houses 5888 shading units. The GPU’s benchmark scores show it sits in the 72nd percentile of all GPUs, with an average benchmark score of 28238. Compared to its nearest rivals, the RTX 3070 is 0.9% ahead of the AMD Radeon RX 6600 XT and 1% ahead of the NVIDIA GeForce GTX 980 Ti, while trailing the AMD FirePro S7150 by 0.6% and the AMD Radeon R9 M295X by 1.1%. These deltas are minuscule, indicating that the RTX 3070’s raw compute is well-matched against those cards, but its 8 GB VRAM capacity is a key differentiator in modern games.

In Rust, the GPU’s role is most pronounced at higher resolutions and settings. At 4K Ultra, the average FPS falls to 34.4, which is a 57% drop from 4K Low (73 FPS). This steep decline highlights that the GPU is the primary bottleneck at 4K, as the pixel count and shading load overwhelm the RTX 3070’s capabilities. The 8 GB VRAM is likely a constraint at 4K Ultra, where texture detail and asset streaming can exceed that capacity. At 1440p, the GPU still dominates the performance curve: Low (130.2 FPS) to Ultra (53.9 FPS) represents a 59% reduction, showing that the RTX 3070’s compute and memory bandwidth are stretched by the game’s rendering demands. The data indicates that the RTX 3070 is a capable 1440p card for Rust at Medium to High settings, but at 4K, it falls below the 60 FPS threshold on all settings except Low.

Settings Recommendations

The measured frame rates provide a clear hierarchy for optimizing the experience. At 1080p, the High preset delivers 104.6 FPS average, which is a strong result for competitive or smooth play. However, the Low preset at 185.2 FPS offers a dramatically higher frame rate, albeit with reduced visual fidelity. The Medium preset at 122.7 FPS sits between the two, providing a balance. For 1440p users, the Medium preset at 86.5 FPS is the sweet spot, as it stays above the 60 FPS mark while offering better visuals than Low (130.2 FPS). The High preset at 72.8 FPS is also viable, but the drop to Ultra at 53.9 FPS crosses below the 60 FPS threshold, making it less desirable.

At 4K, the situation is more constrained. The Low preset at 73 FPS is the only setting that remains above 60 FPS, while Medium (51.7 FPS) and High (45.9 FPS) fall short. Ultra at 34.4 FPS is nearly unplayable for fast-paced action. The data suggests that for 1080p and 1440p, the High preset offers the best balance of visual quality and performance, as it maintains 104.6 and 72.8 FPS respectively. For 4K, users must accept Low settings to achieve playable frame rates, sacrificing significant visual detail. The overall recommendation is to prioritize High at 1080p and Medium at 1440p, with 4K reserved for Low settings or lower resolutions.

How This Combo Ranks

The combination of the Intel Core i5-12400 and NVIDIA GeForce RTX 3070 ranks 747th out of 1717 tested combos in Rust, placing it in the upper-middle tier of all systems. This ranking reflects the balance between the CPU and GPU, where neither component is a standout performer but together they deliver consistent results. The i5-12400’s 77th percentile CPU score and the RTX 3070’s 72nd percentile GPU score align to produce a system that is slightly above average for Rust. However, the ranking also suggests that many other combos, particularly those with higher-end CPUs or GPUs, achieve better frame rates in this specific game.

The measured FPS data confirms this mid-tier positioning. At 1080p High, the combo achieves 104.6 FPS, which is respectable but not exceptional for a system with this hardware. The fact that the combo ranks in the 43rd percentile (747/1717) indicates that a significant number of tested configurations outperform it, likely due to faster CPUs or GPUs. The ranking also implies that the i5-12400 may be the weaker link in Rust’s CPU-heavy scenarios, as the RTX 3070 is capable of higher frame rates when paired with a stronger processor. Overall, this combo is a competent performer, but it does not punch above its weight class in Rust’s demanding environments.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals the limiting component across settings. At 1080p High, the average FPS is 104.6, which drops to 72.8 at 1440p (a 30% reduction) and further to 45.9 at 4K (a 56% reduction from 1080p). This pattern is typical of a GPU-bound scenario, where the resolution increase places more stress on the graphics card. However, at Low settings, the scaling is different: 185.2 FPS at 1080p drops to 130.2 at 1440p (30% reduction) and to 73 at 4K (61% reduction). The larger percentage drop at 4K Low suggests that the GPU’s fill rate and bandwidth are insufficient, even at minimal settings.

The data indicates that the GPU is the primary limiting factor at 4K, as the RTX 3070 cannot maintain high frame rates regardless of settings. At 1080p and 1440p, the CPU plays a more significant role, especially at Low settings where the GPU is less stressed. The transition from 1080p Low (185.2 FPS) to 1080p Ultra (79.5 FPS) shows a 57% drop, which is driven by the GPU’s rendering load. Conversely, the drop from 1080p High (104.6 FPS) to 1440p High (72.8 FPS) is 30%, indicating that the GPU is still the bottleneck at higher resolutions. The overall conclusion is that the i5-12400 provides adequate CPU performance for Rust at 1080p and 1440p, but the RTX 3070’s 8 GB VRAM and compute limits prevent smooth 4K gameplay, forcing users to reduce settings or resolution for acceptable frame rates.