Rust

The Intel Core i5-12400 and NVIDIA GeForce GTX 1660 SUPER pairing in Rust delivers a playable but resolution-sensitive experience, with the data showing a clear hierarchy where 1080p remains the only fully fluid territory. The measured frames per second across all settings and resolutions reveal a system that is consistently GPU-bound at higher quality presets, yet surprisingly capable of pushing high refresh rates at lower settings in 1080p.

CPU Role — cores, clocks, and how they relate to this game's results

The Intel Core i5-12400 brings six physical cores and twelve threads to Rust, a survival title that is known for its demanding server-side simulation and frequent physics updates. The processor’s base clock of 2.50 GHz and boost clock of 4.40 GHz provide the single-thread headroom that Rust’s core game logic often requires, though the measured frame rates suggest that the CPU is rarely the primary constraint in this specific configuration. The 3DMark single-thread score of 910 and the Cinebench R23 single-core result of 2249 indicate solid per-core performance, which helps maintain frame pacing when the game’s world is actively simulating other players, building destruction, and resource gathering.

The processor’s 18 MB of shared L3 cache and 1.25 MB per-core L2 cache are substantial for a mid-range chip, and the benchmark data shows the i5-12400 performing within a narrow band of its nearest rivals. The average benchmark score of 19850 places it at the 77th percentile of all CPUs, with the Intel Core i7-9700 scoring 19831 (a delta of 0.1 percent) and the Intel Core i7-8700 scoring 19894 (a delta of -0.2 percent). This effectively means the i5-12400 is statistically tied with those older i7 parts, which is notable because Rust’s server-side calculations can scale with thread count, yet the 12-thread configuration here does not appear to bottleneck the GPU at any tested resolution.

Looking at the measured FPS data, the gap between Low and Ultra settings at 1080p is massive — from 107.3 FPS down to 46.5 FPS — which indicates that the CPU is feeding frames well above what the GTX 1660 SUPER can render at higher quality levels. At 4K, the frame rates collapse to between 19.9 and 44.1 FPS, and even the Low preset at 4K (44.1 FPS) is lower than the High preset at 1440p (44.2 FPS), suggesting that the CPU’s role diminishes as resolution increases and the GPU takes over the workload. The passmark single-thread score of 3456 and the 3DMark 2-thread score of 1692 reinforce that the i5-12400 has enough single-core muscle to avoid becoming the limiting factor in most Rust scenarios, particularly when compared to its nearest rivals that all sit within a 0.5 percent delta of each other.

GPU Role — VRAM, clocks, and how they relate to this game's results

The NVIDIA GeForce GTX 1660 SUPER is the clear performance ceiling in this pairing, and the data shows its 6 GB of GDDR6 memory and 192-bit bus becoming increasingly strained as resolution climbs. The GPU’s base clock of 1530 MHz and boost clock of 1785 MHz, combined with a memory clock of 1750 MHz (14 Gbps effective), deliver 336.0 GB/s of bandwidth, which is adequate for 1080p but shows its limits at higher resolutions. The benchmark results place the GTX 1660 SUPER at the 55th percentile of all GPUs with an average score of 14286, and its nearest rivals — the AMD Radeon RX Vega 11 (14314, delta -0.2 percent) and Intel Iris Xe MAX Graphics (14315, delta -0.2 percent) — are nearly identical in raw compute, though the measured Rust data tells a more nuanced story.

At 1080p, the GPU’s 5.027 TFLOPS of FP32 performance and 1408 shading units are sufficient to push 107.3 FPS on Low settings, but the frame rate drops to 58.9 FPS on High and 46.5 FPS on Ultra. This scaling pattern — a 60 percent drop from Low to Ultra at 1080p — indicates that the GTX 1660 SUPER’s 48 ROPs and 88 texture mapping units are being saturated by Rust’s draw calls and shadow rendering at higher presets. The 6 GB VRAM capacity is not explicitly tested in the frame data, but the steep decline from Medium (71.3 FPS) to High (58.9 FPS) at 1080p suggests that memory bandwidth and fill rate are the limiting factors rather than raw VRAM size.

Moving to 1440p, the GPU’s limitations become more pronounced: Low delivers 72.1 FPS, but High drops to 44.2 FPS and Ultra falls to 34.1 FPS. At 4K, the situation is dire, with even Low settings only mustering 44.1 FPS and Ultra dropping to 19.9 FPS. The 3DMark Steel Nomad DX12 score of 1278 and the Passmark G3D score of 12699 both indicate that this GPU is a mid-range part from a previous generation, and Rust’s demanding rendering pipeline at 4K simply overwhelms its 85.68 GPixel/s pixel rate. The data clearly shows that the GTX 1660 SUPER is the bottleneck at every resolution above 1080p Low, and even at 1080p Ultra, the GPU is struggling to maintain a stable 60 FPS.

Settings Recommendations — which preset gives the best experience per the measured rows

The measured frame rates provide a clear prescription for the best experience on this hardware. For 1080p, the Low preset delivers 107.3 FPS, which is the only setting that comfortably exceeds 100 FPS and provides the headroom needed for Rust’s notorious frame-time spikes during server events or building raids. Medium at 71.3 FPS is the best balance of visual quality and performance, offering a 33 percent improvement over High (58.9 FPS) while still maintaining a smooth experience on standard 60 Hz monitors. Ultra at 46.5 FPS is playable but dips below the 60 FPS threshold, and the visual gains over Medium are not worth the 35 percent frame rate penalty for most players.

At 1440p, the recommendation shifts to Low settings, which delivers 72.1 FPS and remains fluid, while Medium (49.4 FPS) and High (44.2 FPS) both fall into the range where fast-paced combat can feel sluggish. Ultra at 34.1 FPS is only suitable for players who prioritize visuals over responsiveness, which is risky in a survival game where PvP encounters can be decided by a single frame. For 4K, the data shows that no preset provides a truly playable experience: Low (44.1 FPS) is the only option above 30 FPS, and even that requires significant visual compromises. The best overall experience per the measured rows is 1080p Medium, which offers a 71.3 FPS average that balances Rust’s detailed world with the GTX 1660 SUPER’s capabilities, while players with 144 Hz monitors should stick to 1080p Low to leverage the 107.3 FPS ceiling.

FAQ

Q: Is the Intel Core i5-12400 a bottleneck for the GTX 1660 SUPER in Rust?

A: No, the data does not indicate a CPU bottleneck. The i5-12400’s average benchmark score of 19850 is nearly identical to its nearest rivals, and the frame rates scale predictably with GPU settings, with the biggest FPS drops occurring when increasing quality presets rather than when increasing resolution, which points to the GPU as the limiting component.

Q: Can this system run Rust at 4K?

A: Yes, but only marginally. The measured data shows 44.1 FPS on Low settings at 3840x2160, which is just above the 30 FPS playability threshold. High settings at 4K drop to 26.2 FPS, and Ultra falls to 19.9 FPS, making 4K impractical for anything except static screenshots.

Q: What is the best settings preset for high refresh rate gaming at 1080p?

A: The Low preset at 1920x1080 delivers 107.3 FPS, which is the only setting that exceeds 100 FPS. This provides the frame rate headroom necessary for 144 Hz monitors, though Medium at 71.3 FPS is the highest preset that still maintains a solid 60+ FPS experience.

Q: How does the GTX 1660 SUPER compare to its nearest rivals in Rust?

A: The GTX 1660 SUPER’s average benchmark score of 14286 is statistically tied with the AMD Radeon RX Vega 11 (14314) and Intel Iris Xe MAX Graphics (14315), both with a delta of -0.2 percent. This indicates that these GPUs would likely produce similar frame rates in Rust, though the measured FPS data specific to this game is only available for the GTX 1660 SUPER.

Q: Does the i5-12400’s 12-thread configuration help in Rust?

A: The processor scores 5873 in 3DMark 16-thread tests and 5890 in max-thread tests, showing strong multi-threaded capability. However, the frame rate data shows that Rust’s performance is primarily GPU-limited in this pairing, so the 12 threads provide headroom for background tasks and server simulation without directly boosting FPS.

Q: What is the worst-performing preset and resolution combination?

A: The Ultra preset at 3840x2160 produces 19.9 FPS, which is the lowest measured value. This is below the 30 FPS threshold for playable action and indicates that the GTX 1660 SUPER is severely overmatched at 4K Ultra settings.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The resolution scaling data reveals a classic GPU-bound scenario, with frame rates falling dramatically as pixel count increases. At Low settings, the progression from 1080p to 1440p to 4K shows 107.3 FPS dropping to 72.1 FPS (a 33 percent reduction) and then to 44.1 FPS (a 39 percent reduction from 1440p). This consistent decline across each resolution step indicates that the GTX 1660 SUPER’s raw rendering throughput — its 5.027 TFLOPS and 336.0 GB/s memory bandwidth — is being saturated by the increasing pixel workload, rather than any CPU or memory system constraint.

For High settings, the scaling is even steeper: 58.9 FPS at 1080p falls to 44.2 FPS at 1440p (a 25 percent drop) and then to 26.2 FPS at 4K (a 41 percent drop from 1440p). The Ultra preset shows the most dramatic collapse, going from 46.5 FPS at 1080p to 34.1 FPS at 1440p to 19.9 FPS at 4K. The fact that the percentage drops are larger at higher quality settings reinforces that the GPU is the limiting component — if the CPU were the bottleneck, the frame rates would remain relatively flat as resolution increases, since the CPU workload stays constant regardless of pixel count.

The data also shows that the gap between Low and Ultra widens with resolution: at 1080p, Ultra is 56 percent slower than Low (107.3 vs 46.5 FPS), while at 4K, Ultra is 55 percent slower than Low (44.1 vs 19.9 FPS). This consistent ratio indicates that the GPU’s shading units and texture units are proportionally taxed at every quality level, and the 192-bit memory bus becomes a critical constraint at 4K where the 6 GB VRAM buffer is likely being exceeded by Rust’s high-resolution textures. Overall, the resolution scaling analysis confirms that players seeking higher resolutions must drastically reduce quality settings — and even then, 4K remains a marginal experience at best.