Rust

The Intel Core i5-12400F and AMD Radeon RX 570 pairing represents a distinct combination of a modern 12th-generation processor with a legacy Polaris graphics card. In Rust, the benchmark results reveal a system where the GPU is the primary bottleneck, with the CPU’s six performance cores providing a stable foundation that prevents frame pacing issues but cannot overcome the graphics card’s memory and compute limitations. The data shows a clear hierarchy across resolutions and settings, making this combo a functional, if not high-end, option for the survival title.

CPU Role

The Intel Core i5-12400F is a desktop processor based on the Alder Lake architecture, built on Intel's 10 nm process node. It features 6 cores and 12 threads, with a base clock of 2.50 GHz and a boost clock of 4.40 GHz. This configuration allows for efficient handling of Rust's server-side logic and world simulation, which often relies on single-threaded performance for physics and entity updates. The CPU's cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and a shared 18 MB L3 cache, providing ample fast storage for game data.

In synthetic benchmarks, the i5-12400F demonstrates strong single-threaded capability with a 3dmark_single_thread score of 909 and a passmark_single_thread score of 3481. Its multi-threaded performance is equally robust, with a cinebench_r23_multicore score of 12380 and a passmark_multithread score of 19433. These scores place the CPU in the 73rd percentile among all processors, indicating it outperforms a majority of competitors. Compared to its closest rivals, the AMD Ryzen 5 7535HS (avgScore 19047) and Intel Core 3 201E (avgScore 19056), the i5-12400F (avgScore 19039) sits within a negligible 0.3% margin, showing that its processing power is competitive with these alternatives.

For Rust, this CPU power translates to a consistent frame delivery at lower resolutions. At 1080p, the combination of the CPU’s high boost clock and 12 threads ensures that the game's simulation is never the limiting factor, even when the GPU is saturated. However, the data suggests that the CPU's role diminishes as resolution increases, since the GPU workload grows faster than the CPU's capacity to prepare frames. The processor’s 65 W TDP and support for DDR4 and DDR5 memory make it a versatile choice, though the benchmark results do not indicate that memory bandwidth significantly impacts the measured FPS in this game.

FAQ

Q: How does the i5-12400F compare to its nearest rivals in overall CPU performance?

A: The i5-12400F has an average benchmark score of 19039, placing it virtually identical to the AMD Ryzen 5 7535HS (19047) and Intel Core 3 201E (19056). It is slightly ahead of the Intel Core i5-1335U (18982) by 0.3% and the AMD EPYC 7773X (18979) by the same margin. This indicates that the CPU's raw processing power is on par with these alternatives.

Q: What is the best resolution and settings combo for achieving 60 FPS?

A: The only measured configuration that achieves an average FPS above 60 is 1920x1080 with Low settings, which produces an average of 66 FPS. All other tested settings at 1080p fall below this threshold, with Medium at 44 FPS and High at 38 FPS.

Q: Does the GPU's 4 GB VRAM limit performance at higher resolutions?

A: Yes, the data strongly suggests this. At 3840x2160, the average FPS drops to 15 on High and 12 on Ultra, indicating that the 4 GB memory buffer is insufficient for high-resolution textures, causing severe performance degradation.

Q: How does the RX 570's benchmark score compare to other GPUs?

A: The RX 570 has an average benchmark score of 28766, which is 0.4% lower than the AMD Radeon RX 6800M (28874) and 0.7% higher than the AMD Radeon R9 M295X (28580). It also outperforms the NVIDIA Quadro RTX 8000 (28421) by 1.2%, showing its performance class is consistent with these older or mobile parts.

Q: What is the performance difference between Low and Ultra settings at 1440p?

A: At 2560x1440, Low settings yield an average of 46 FPS, while Ultra settings drop to 20 FPS. This represents a 56.5% reduction in average frame rate when moving from the lowest to the highest preset.

Q: Is the i5-12400F a bottleneck for the RX 570 in Rust?

A: Based on the resolution scaling, the CPU is not the primary bottleneck. The FPS drops significantly when moving from 1080p to 4K, indicating the GPU is the limiting component. The CPU's high single-thread score (909 in 3dmark) ensures it can keep up with the GPU's frame output.

Resolution Scaling

The measured FPS data reveals a steep performance cliff as resolution increases, confirming the GPU as the system's limiting factor. Starting at 1920x1080 with High settings, the average FPS is 38. Moving to 2560x1440, the average drops to 26, a 31.6% decrease. At 3840x2160, the average plummets to 15, a further 42.3% reduction from the 1440p result and a 60.5% drop from the 1080p baseline.

This scaling pattern is characteristic of a GPU that is overwhelmed by pixel throughput demands. The RX 570's 224.0 GB/s memory bandwidth and 4 GB GDDR5 buffer become increasingly strained as the render target grows. The data shows that the gap between Low and High settings narrows at higher resolutions, indicating that the GPU's compute units are saturated regardless of quality settings. For instance, at 1080p, the difference between Low (66 FPS) and High (38 FPS) is 28 FPS, but at 4K, the difference shrinks to 12 FPS (27 vs 15).

The CPU's role in this scaling is minimal. The i5-12400F's 6 cores and 12 threads are sufficient to maintain frame pacing even when the GPU's output is low. The benchmark results indicate that the limiting component is the GPU's fill rate and memory system, not the processor's ability to issue draw calls. For users seeking higher frame rates, reducing resolution to 1080p is the most effective lever, as the CPU can deliver higher FPS if the GPU is not the bottleneck.

Measured FPS Breakdown

At 1920x1080, the RX 570 and i5-12400F deliver their best performance. The Low preset achieves an average of 66 FPS, which is the only playable setting for smooth gameplay. The Medium preset produces an average of 44 FPS with a minimum of 38 and maximum of 51, showing moderate frame variance. High settings average 38 FPS, while Ultra drops to 29 FPS. These numbers indicate that the GPU can handle the pixel count at 1080p, but the quality settings must be kept low to maintain a high refresh rate.

Moving to 2560x1440, performance falls below the 60 FPS threshold across all settings. Low averages 46 FPS, which is a 30.3% decrease from the 1080p Low result. Medium averages 31 FPS (min 26, max 35), High averages 26 FPS, and Ultra averages 20 FPS. The frame time consistency at Medium (min 26, max 35) suggests that the GPU is still coping with the load, but the average FPS is too low for competitive play.

At 3840x2160, the system is severely constrained. Low settings average 27 FPS, Medium averages 18 FPS (min 15, max 21), High averages 15 FPS, and Ultra averages 12 FPS. The 4K results show that the GPU's memory and compute resources are exhausted, resulting in sub-20 FPS on anything above Low. The minimum FPS of 15 at Medium indicates occasional stutters, likely due to VRAM swapping. This resolution is not viable for this combo, as even the lowest preset struggles to maintain a stable frame rate.

GPU Role

The AMD Radeon RX 570 is built on the Polaris 20 chip using GCN 4.0 architecture, manufactured on a 14 nm process by GlobalFoundries. It features 2048 shading units, 128 texture mapping units, and 32 ROPs. The GPU operates at a base clock of 1168 MHz and a boost clock of 1244 MHz, with 4 GB of GDDR5 memory on a 256-bit bus, providing 224.0 GB/s of bandwidth. This configuration yields a pixel rate of 39.81 GPixel/s and a texture rate of 159.2 GTexel/s, with FP32 performance of 5.095 TFLOPS.

In Rust, the GPU's role is dominant, as evidenced by the benchmark results. The 4 GB VRAM is a critical constraint at higher resolutions, where texture data exceeds the memory buffer, causing significant frame drops. At 1080p, the GPU can maintain playable frame rates on Low, but it struggles with the compute demands of Ultra settings. The GPU's 74th percentile ranking (avgBenchmarkScore 28766) places it above the median, but its performance is closely matched by the AMD Radeon RX 470 (28996) and AMD Radeon RX 6800M (28874), showing that it is a mid-range part from a previous generation.

The RX 570's DirectX 12 (12_0) and Vulkan 1.3 support are adequate for Rust, but the lack of modern features like hardware ray tracing does not affect this game. The GPU's 150 W TDP and dual-slot design are typical for its class, but the data shows that its compute capability is the limiting factor. The benchmark results from 3dmark_steel_nomad_dx12 (880) and geekbench_vulkan (42752) confirm that the GPU is not suited for high-end workloads, but it can handle older or less demanding titles like Rust at lower settings.

Settings Recommendations

Based on the measured FPS data, the optimal configuration for this combo is 1920x1080 with Low settings. This is the only tested preset that achieves an average FPS above 60 (66 FPS), making it the best choice for smooth, responsive gameplay. The Low preset at 1080p provides a headroom of 6 FPS over the 60 FPS target, allowing for minor frame dips without noticeable stutter.

If users prefer higher visual fidelity, the Medium preset at 1080p (44 FPS) is a viable compromise, but it sacrifices frame rate for improved textures and lighting. The minimum FPS of 38 at this setting suggests that action-heavy scenes may cause noticeable slowdowns. The High preset (38 FPS) and Ultra (29 FPS) are not recommended for gameplay, as they fall well below the 60 FPS threshold and may introduce input lag.

At 1440p, the Low preset (46 FPS) is the only setting that approaches playability, but it is still below the 60 FPS target. Users with 1440p monitors should consider lowering the resolution to 1080p for a better experience, as the visual difference is less impactful than the frame rate gain. The 4K resolution is not viable for this combo, with even Low settings averaging 27 FPS, making it unsuitable for any serious gameplay.

How This Combo Ranks

The Intel Core i5-12400F and AMD Radeon RX 570 combination ranks 3553 out of 3723 tested combos in Rust, placing it in the bottom 4.5% of all systems. This low ranking is primarily due to the GPU's limited capabilities, as the CPU's performance is adequate for the game. The data indicates that this combo is best suited for 1080p gaming at low to medium settings, where it can deliver playable frame rates.

The ranking reflects the GPU's age and VRAM capacity, which are major drawbacks in a game like Rust that can be demanding on memory. The CPU's strong single-threaded performance (909 in 3dmark_single_thread) does not compensate for the GPU's inability to render at higher resolutions. Compared to other combos, this system is positioned for entry-level or budget-conscious users who prioritize frame rate over visual quality. The benchmark results show that while the CPU is not a bottleneck, the GPU's 4 GB VRAM and 5.095 TFLOPS compute power limit the overall experience, making this combo a dated but functional option for Rust.