Rust

The Intel Core i5-12400 pairs six physical cores with twelve threads, using a base clock of 2.50 GHz and a boost clock of 4.40 GHz. This configuration places the processor in the 77th percentile among all tested CPUs, with an average benchmark score of 19850. In Rust, the game’s simulation and entity-update logic tend to favor higher single-thread throughput, and the i5-12400’s 3dmark_single_thread score of 910 supports that strength. The processor’s 18 MB of shared L3 cache also helps when the game streams in the large, persistent world maps typical of survival titles.

The CPU’s multithreaded capacity is respectable but not dominant. Its cinebench_r23_multicore score of 15935 and passmark_multithread score of 18747 indicate that it can handle background tasks and the game’s server-side calculations without becoming the primary bottleneck in most scenarios. Compared to its nearest rivals, the i5-12400 sits nearly level with the Intel Core i7-9700, which scores 19831 (a delta of 0.1%), and the Intel Core i7-8700, which scores 19894 (a delta of -0.2%). This means that in raw CPU benchmarks, the i5-12400 is effectively interchangeable with those older i7 parts. It is also 0.4% ahead of the Intel Core i5-11600K (score 19771) and 0.4% behind the AMD Ryzen Threadripper PRO 5995WX (score 19928), though that Threadripper part is in a completely different market segment. For Rust specifically, the data suggests that the i5-12400 provides a stable foundation, but the measured FPS will depend heavily on the GPU and resolution.

GPU Role

The AMD Radeon RX 6600 is built on the RDNA 2.0 architecture with a Navi 23 chip, fabricated on a 7 nm process at TSMC. It carries 8 GB of GDDR6 memory on a 128-bit bus, yielding a bandwidth of 224.0 GB/s. The GPU’s base clock is 1626 MHz, with a boost clock of 2491 MHz and a game clock of 2044 MHz. The RX 6600 sits in the 69th percentile of all GPUs, with an average benchmark score of 25235. In Rust, the GPU is responsible for rendering the dense vegetation, dynamic lighting, and large draw distances, and the 8 GB VRAM capacity is relevant because the game can consume significant memory at higher resolutions and settings.

The RX 6600’s nearest rivals show a tight cluster. The AMD Radeon 890M scores 25246, a delta of 0%, meaning the RX 6600 is statistically identical to that integrated graphics solution in aggregate benchmarks. The RX 580 2048SP scores 25287 (delta -0.2%), the RX 6700M scores 25180 (delta 0.2%), and the RTX 3060 Ti scores 25120 (delta 0.5%). This indicates that the RX 6600’s raw compute performance is comparable to a range of older and newer parts, but the measured Rust FPS will clarify how that compute translates to real gameplay. The GPU’s 1792 shading units and 64 ROPs provide a solid baseline, but the data shows that at higher settings, the RX 6600 begins to struggle with Rust’s demands.

How This Combo Ranks

The combination of the Intel Core i5-12400 and the AMD Radeon RX 6600 ranks 1412 out of 1717 tested combos in Rust. That places this pairing in the bottom 18% of all possible configurations, which is a significant finding. The rank suggests that while each component individually sits in the upper-middle percentile of its respective category, the pairing does not yield top-tier results in this specific game. The data is measured, not extrapolated, so this rank directly reflects the observed FPS across the tested settings and resolutions.

This low combo rank is driven by the fact that Rust is demanding on both CPU and GPU, and the RX 6600’s 8 GB VRAM and 128-bit memory bus become limiting factors at higher resolutions. The i5-12400’s CPU performance is adequate, but it cannot compensate for the GPU’s bandwidth constraints when the game asks for more data per frame. In practice, the combo rank indicates that users with this setup will need to adjust settings to achieve playable frame rates, particularly at 1440p and 4K. The rank also implies that other combinations, even with similar individual component scores, may perform better in Rust due to different memory configurations or driver optimizations.

Measured FPS Breakdown

At 1080p, the data shows a clear progression across settings. On Low, the combo achieves 125.4 FPS, which is smooth for a survival game with rapid camera movements. Moving to Medium drops the frame rate to 83.1 FPS, a 33.7% reduction, and High further reduces it to 69.5 FPS. Ultra settings bring the average down to 54.5 FPS, which is still playable but begins to show the GPU’s limitations. The 1080p Low result is notably strong, suggesting that the CPU can feed the GPU effectively at lower graphical loads.

At 1440p, the frame rates drop noticeably. Low settings yield 87.5 FPS, which is still smooth, but Medium falls to 56.8 FPS and High to 47.7 FPS. Ultra at 1440p produces 39.4 FPS, which is below the 60 FPS target that many players prefer. The drop from Low to Ultra at 1440p is 55%, indicating that the GPU is becoming the primary constraint as pixel count increases. At 4K, the results are more challenging. Low settings average 51.8 FPS, which is playable, but Medium drops to 32.7 FPS, High to 27.3 FPS, and Ultra to 22.1 FPS. The 4K Ultra result is essentially unplayable for fast-paced action, highlighting the VRAM and bandwidth limits of the RX 6600.

Resolution Scaling

The resolution scaling data reveals a consistent pattern: as resolution increases, the FPS drops significantly, and the drop is steeper at higher settings. From 1080p Low to 4K Low, the frame rate falls from 125.4 FPS to 51.8 FPS, a 58.7% reduction. From 1080p Ultra to 4K Ultra, the drop is from 54.5 FPS to 22.1 FPS, a 59.4% reduction. This near-identical percentage drop across settings suggests that the limiting component is the GPU’s memory bandwidth and fill rate, rather than the CPU. If the CPU were the bottleneck, the FPS would scale more linearly with resolution, but the data shows a steeper decline.

Comparing 1440p to 1080p, the average FPS across all settings is roughly 68% of the 1080p value, which aligns with the pixel count increase from 2.07 million to 3.69 million pixels. From 1440p to 4K, the average FPS drops to roughly 55% of the 1440p value, which is consistent with the pixel count jumping from 3.69 million to 8.29 million. The fact that the FPS scales almost exactly with pixel count indicates that the RX 6600 is operating at its memory bandwidth limit. The i5-12400’s role in this scaling is minimal, as the CPU has sufficient headroom to feed the GPU at all tested resolutions, but the GPU cannot keep up as the pixel workload grows.

FAQ

Q: What is the best settings preset for 1080p on this combo?

A: The data shows that Low settings yield 125.4 FPS at 1080p, which is the highest measured value. Medium produces 83.1 FPS, and High produces 69.5 FPS. For a 60 FPS target, Medium or High are viable, but Low provides the smoothest experience.

Q: Can this combo handle 1440p gaming in Rust?

A: At 1440p, Low settings average 87.5 FPS, which is playable. Medium drops to 56.8 FPS, and High to 47.7 FPS. Ultra falls to 39.4 FPS. The data indicates that 1440p is only recommended with Low or Medium settings for a consistent experience.

Q: Is 4K viable with the RX 6600 and i5-12400?

A: The measured results show 4K Low at 51.8 FPS, which is marginal. Medium drops to 32.7 FPS, High to 27.3 FPS, and Ultra to 22.1 FPS. 4K is not recommended for this pairing, as even Low settings struggle to maintain 60 FPS.

Q: How does this combo rank compared to all tested combos?

A: This combo ranks 1412 out of 1717 tested combos in Rust. The rank places it in the lower 18% of configurations, indicating that it is not a top-tier setup for this game.

Q: What does the resolution scaling data say about the bottleneck?

A: The FPS drops from 1080p to 4K are nearly proportional to pixel count increases. For example, 1080p Low to 4K Low is a 58.7% drop, and 1080p Ultra to 4K Ultra is a 59.4% drop. This pattern indicates that the GPU’s memory bandwidth is the limiting factor, not the CPU.

Q: How does the RX 6600 compare to its nearest rival, the RTX 3060 Ti?

A: In aggregate benchmarks, the RX 6600 scores 25235, while the RTX 3060 Ti scores 25120, a delta of 0.5%. This means the RX 6600 is slightly ahead in synthetic tests, but the measured Rust FPS would be needed to confirm real-world performance differences.