Rust

The Intel Core i5-11400F paired with the NVIDIA GeForce RTX 3080 delivers a remarkably consistent gaming experience in Rust, but the data reveals a clear performance ceiling dictated by the CPU rather than the GPU. Benchmark results show this combo ranks 535th out of 1717 tested configurations, placing it in the upper third of all systems. The RTX 3080, which sits in the 80th percentile of all GPUs, is clearly capable of far higher frame rates than this CPU can feed it, making this a processor-limited pairing at most settings and resolutions.

Resolution Scaling

The frame rate scaling from 1080p to 4K follows a predictable pattern, but the magnitude of the drop reveals where the bottleneck lies. At High settings, the system produces 124 FPS at 1920x1080, dropping to 86 FPS at 2560x1440, and further to 50.5 FPS at 3840x2160. This represents a 59% reduction in frame rate from 1080p to 4K at High settings, which is a substantial hit that indicates the GPU is becoming the limiting factor at higher resolutions.

However, the Low settings data tells a different story. At 1080p Low, the system achieves 174.3 FPS, which drops to 146 FPS at 1440p and 89 FPS at 4K. The scaling from 1080p to 1440p at Low settings is only a 16% reduction — a relatively small penalty that suggests the CPU is holding the system back at lower resolutions. When the GPU has less work to do, the frame rate cannot scale proportionally because the CPU cannot process frames fast enough. At 4K Low, the 89 FPS result is still respectable, but the fact that it is only 51% of the 1080p Low score confirms that the GPU is taking over as the primary constraint at this resolution.

The Medium settings results sit between these extremes, with 147 FPS at 1080p, 100.6 FPS at 1440p, and 56.6 FPS at 4K. The Ultra preset shows the steepest drop, going from 92.3 FPS at 1080p down to 39.5 FPS at 4K — a 57% reduction. This pattern indicates that Rust's Ultra preset is particularly demanding on the GPU, and the RTX 3080's 10 GB GDDR6X memory and 760.3 GB/s bandwidth are being pushed to their limits at 4K Ultra.

GPU Role

The NVIDIA GeForce RTX 3080 is built on the Ampere architecture with 8704 shading units and 68 RT cores. Its boost clock of 1710 MHz and base clock of 1440 MHz allow it to sustain high throughput in Rust's open-world environments. The GPU's 96 ROPs and 272 TMUs contribute to its ability to handle the game's large draw distances and complex lighting, which are particularly demanding at higher resolutions.

The 10 GB of GDDR6X memory on a 320-bit bus provides 760.3 GB/s of bandwidth. This memory configuration is sufficient for most Rust scenarios, but the 4K Ultra result of 39.5 FPS suggests that the game's most demanding settings can strain this allocation. The 4K Medium score of 56.6 FPS and 4K High score of 50.5 FPS show that even at lower quality presets, 4K resolution is a heavy load for this GPU in Rust. The RTX 3080 sits at the 80th percentile of all GPUs, and its nearest rivals include the AMD Radeon RX 7900 GRE with a deltaPct of -0.9 and the AMD Radeon 880M with a deltaPct of 0.4, indicating it performs essentially on par with these cards in general benchmarks.

CPU Role

The Intel Core i5-11400F is a 6-core, 12-thread processor based on the Rocket Lake architecture, manufactured on Intel's 14 nm process. It has a base clock of 2.60 GHz and a boost clock of 4.40 GHz, with 12 MB of shared L3 cache. The processor's 65 W TDP places it in the mainstream power envelope, and its 75th percentile ranking among all CPUs reflects its solid but not exceptional performance.

Benchmark results show this CPU achieves a Cinebench R23 multicore score of 14372 and a single-core score of 2029. Its PassMark multithread score is 16908, with a single-thread score of 2981. These numbers indicate a processor that is well-suited for gaming but not at the very top of the performance hierarchy. The CPU's nearest rivals include the AMD Ryzen 7 5700U with a deltaPct of 0 and the Intel Core i7-1260P with a deltaPct of -0.2, showing that the 11400F sits essentially tied with these mobile-oriented chips in average benchmark scores.

In Rust, the CPU's 6 cores and 12 threads are likely sufficient for the game's simulation and physics systems, but the boost clock of 4.40 GHz is not high enough to eliminate the bottleneck seen at 1080p. The 1080p Low score of 174.3 FPS versus the 1440p Low score of 146 FPS clearly demonstrates this limitation — the GPU is capable of much higher frame rates, but the CPU cannot maintain them as resolution decreases.

How This Combo Ranks

With a combo rank of 535 out of 1717 tested combinations, this system places in the 69th percentile of all tested configurations. This is a strong result, but it is notable that the GPU's individual percentile (80th) is higher than the CPU's (75th), and both are higher than the combo's overall rank. This suggests that the pairing is not perfectly balanced — the CPU is holding back the GPU's full potential.

The rank of 535 out of 1717 means that roughly 1182 other combinations perform better in Rust, which indicates that while this system is capable of smooth gameplay at most settings, it is not among the elite performers. The gap between the combo rank and the individual component percentiles suggests that a more powerful CPU paired with this RTX 3080 would likely achieve a significantly better ranking. The data supports this interpretation: the 1080p Low result of 174.3 FPS is likely near the CPU's maximum achievable frame rate in Rust, regardless of GPU headroom.

Measured FPS Breakdown

The complete measured FPS data for this combo is as follows:

At 1920x1080, the system delivers 174.3 FPS on Low settings, 147 FPS on Medium, 124 FPS on High, and 92.3 FPS on Ultra. The progression from Low to Ultra at 1080p shows a 47% reduction in frame rate, which is substantial but still leaves even the Ultra preset at a highly playable level.

At 2560x1440, performance drops to 146 FPS on Low, 100.6 FPS on Medium, 86 FPS on High, and 63.2 FPS on Ultra. The 1440p Ultra result is the first setting where the system falls below the 60 FPS threshold, though it remains close to it. The 1440p Low score of 146 FPS is still very high, indicating that competitive players can achieve excellent frame rates at this resolution.

At 3840x2160, the system produces 89 FPS on Low, 56.6 FPS on Medium, 50.5 FPS on High, and 39.5 FPS on Ultra. Only the Low preset at 4K achieves a comfortable frame rate, with all other settings falling below 60 FPS. This makes 4K gaming possible but not ideal for this combination, especially at higher quality presets.

FAQ

Q: What is the best resolution for this CPU-GPU combo in Rust?

A: Based on the measured data, 2560x1440 with Medium settings provides the best balance, delivering 100.6 FPS. This is well above the 60 FPS threshold while maintaining good visual quality. At 1080p, all settings achieve at least 92.3 FPS, making it a safe choice for maximum performance.

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

A: Yes, but only at Low settings, which produces 89 FPS. At Medium, High, and Ultra settings, the frame rates drop to 56.6, 50.5, and 39.5 FPS respectively. Users prioritizing smooth gameplay at 4K should stick to Low settings.

Q: Is this setup CPU-bound or GPU-bound in Rust?

A: The data indicates the system is CPU-bound at lower resolutions. At 1080p Low, the 174.3 FPS result is likely limited by the CPU's 6-core architecture, as the RTX 3080 is capable of much higher frame rates. At 4K, the GPU becomes the limiting factor, as shown by the sharp drop in performance at higher quality settings.

Q: How does this combo compare to other tested configurations?

A: This system ranks 535th out of 1717 tested combos, placing it in the upper third of all configurations. The GPU's individual percentile of 80 is higher than the CPU's 75, suggesting the CPU is the weaker component in this pairing.

Q: What is the highest quality setting that maintains 60+ FPS?

A: At 1080p, all settings including Ultra (92.3 FPS) exceed 60 FPS. At 1440p, High settings (86 FPS) and below maintain 60+ FPS, but Ultra drops to 63.2 FPS — still above the threshold. At 4K, only Low settings (89 FPS) exceed 60 FPS.

Q: How much performance is lost from 1080p to 4K at the same settings?

A: At Low settings, the drop is from 174.3 to 89 FPS, a 49% reduction. At Medium, it goes from 147 to 56.6 FPS, a 61% reduction. At High, it drops from 124 to 50.5 FPS, a 59% reduction. At Ultra, it falls from 92.3 to 39.5 FPS, a 57% reduction.

Settings Recommendations

For players prioritizing competitive performance and high frame rates, the Low preset at 1920x1080 delivers 174.3 FPS, which is the highest result in this dataset. This setting provides the smoothest experience and is well-suited for fast-paced gameplay. At 2560x1440, Low still delivers a very strong 146 FPS, making it a viable choice for those with higher-resolution displays.

For a balanced experience that maintains good visual quality without sacrificing smoothness, the Medium preset at 2560x1440 is the optimal choice, delivering 100.6 FPS. This configuration provides a solid frame rate well above 60 FPS while offering better visual fidelity than Low. At 1080p, Medium delivers 147 FPS, which is also an excellent option.

For players who want the best visual quality, the Ultra preset at 1920x1080 produces 92.3 FPS, which is still highly playable. At 1440p, Ultra drops to 63.2 FPS, which remains above the 60 FPS threshold but is less comfortable. The data suggests that Ultra at 4K should be avoided, as it produces only 39.5 FPS, which is likely to feel sluggish in a fast-paced survival game. The High preset at 1440p, delivering 86 FPS, represents a better trade-off for those who want improved graphics without significant frame rate loss.