Rust

Rust is a notoriously demanding survival title, and the measured data for the Intel Core i5-14400F paired with the AMD Radeon RX 6750 XT reflects that reputation. This combination lands at rank 840 out of 1717 tested combos, placing it in the upper-middle tier of systems. The frame rates show a clear story: this build is capable of smooth 1080p play, acceptable 1440p performance, and struggles at 4K, with settings dictating the experience more than resolution alone.

Resolution Scaling

The FPS drop from 1080p to 4K is steep and consistent across all settings, but the rate of decline reveals where the bottleneck lies. At Low settings, the average frame rate falls from 173.9 FPS at 1080p to 117.3 FPS at 1440p, a 32.5% reduction, and then to 68.4 FPS at 4K, a further 41.7% drop from 1440p. This scaling is nearly linear with pixel count, which strongly indicates the GPU is the primary limiting factor at lower quality presets. The RX 6750 XT is being pushed to its limits as resolution increases.

The pattern shifts at High settings, where the frame rates are 96.9 FPS at 1080p, 68.7 FPS at 1440p, and 38.3 FPS at 4K. The percentage drop from 1080p to 1440p is 29.1%, but the drop from 1440p to 4K is 44.3%, which is even more severe than at Low settings. This suggests that at higher quality presets, the GPU is not only working harder on pixel count but also on additional visual effects, making the 4K transition particularly punishing. At Ultra settings, the resolution scaling becomes brutal: 77.1 FPS at 1080p, 53.3 FPS at 1440p, and just 28.7 FPS at 4K.

What the data makes clear is that 4K is not a viable target for this combination in Rust. The only 4K result that approaches playability is the Low preset at 68.4 FPS, but that sacrifices most visual fidelity. The difference between 1440p and 4K is consistently larger than the difference between 1080p and 1440p, which indicates that the RX 6750 XT's memory bandwidth and compute resources are exhausted well before the CPU becomes a factor. The scaling pattern is textbook GPU-bound behavior, with the CPU's role diminishing as resolution climbs.

GPU Role

The AMD Radeon RX 6750 XT is the engine driving these results, and its specifications explain the observed behavior. It features 12 GB of GDDR6 memory on a 192-bit bus, delivering 432.0 GB/s of bandwidth. This is a substantial amount of VRAM for Rust, which is known for its large textures and asset streaming, but the bandwidth becomes the limiting factor at 4K. The GPU's boost clock of 2600 MHz and game clock of 2495 MHz are respectable, but the 250 W TDP suggests it is running near its thermal and power limits under sustained load.

Looking at the benchmark scores, the GPU's PassMark G3D score of 20700 places it at the 79th percentile of all GPUs. Its nearest rivals are interesting: the AMD Radeon RX 5600M is just 0.2% behind, while the NVIDIA GeForce RTX 3080 is only 1.3% ahead. This tells us the RX 6750 XT is competitive with much newer hardware in synthetic tests, but the real-world Rust data shows its limitations. The GPU's compute performance of 13.31 TFLOPS FP32 is solid for 1080p and 1440p, but the 4K results at High and Ultra (38.3 and 28.7 FPS) show that raw compute is not enough to overcome the memory bandwidth constraints.

The VRAM capacity of 12 GB is never the issue in these measurements, as even the highest settings at 4K do not show signs of texture thrashing. Instead, the 432.0 GB/s bandwidth is the hard ceiling. The fact that the Low preset at 4K achieves 68.4 FPS versus 38.3 FPS at High indicates that reducing texture quality and shadow complexity frees up bandwidth, allowing the GPU to push more frames. This is a classic sign of a bandwidth-bound scenario rather than a VRAM-capacity-bound one.

CPU Role

The Intel Core i5-14400F is a 10-core, 16-thread processor with a boost clock of 4.70 GHz and a base clock of 2.50 GHz. Its benchmark performance is strong, with a Cinebench R23 multi-core score of 21914 and a single-core score of 3093. It sits at the 88th percentile of all CPUs, and its nearest rivals include the Intel Core i7-12800H (0% delta) and AMD Ryzen 5 PRO 7645 (0.2% delta), meaning it trades blows with higher-tier mobile chips in synthetic tests.

In Rust, however, the CPU's role is secondary to the GPU, as evidenced by the resolution scaling. At 1080p Low, the system hits 173.9 FPS, which is likely near the CPU's practical limit for this game's engine. The fact that 1440p Low only drops to 117.3 FPS (a 32.5% reduction) rather than a steeper falloff suggests the CPU is still providing a solid foundation. The 20 MB of shared L3 cache is well-suited for Rust's frequent entity checks and physics calculations, which are often single-threaded or lightly threaded.

The CPU's PassMark multi-thread score of 25783 and single-thread score of 3723 indicate it has enough headroom to avoid bottlenecking the RX 6750 XT at most settings. The data supports this: at 1080p High (96.9 FPS) and 1440p High (68.7 FPS), the frame rates are high enough that the CPU is clearly not the limiting factor. The only scenario where the CPU might start to matter is at 1080p Low, where the 173.9 FPS result approaches what the GPU can deliver in minimal-load conditions. Given the 10-core, 16-thread configuration, this processor is more than adequate for Rust's demands, and users should not expect CPU-related stutters in normal gameplay.

FAQ

Q: Can this system run Rust at 4K smoothly?

A: No, not at higher settings. The measured results show 38.3 FPS at High and 28.7 FPS at Ultra for 3840x2160. Only the Low preset reaches a playable 68.4 FPS, but that requires significant visual compromises.

Q: What is the best resolution for this CPU/GPU combo?

A: The data indicates 1440p is the sweet spot. At Medium settings, it achieves 78.1 FPS, and at High it holds 68.7 FPS. These are smooth frame rates with good visual quality, whereas 1080p offers higher FPS but leaves performance on the table.

Q: How does the RX 6750 XT compare to the RTX 3080 in Rust?

A: Based on the GPU's nearest rivals data, the RTX 3080 has an average benchmark score that is 1.3% higher than the RX 6750 XT. This suggests the two are close in raw compute, but the measured Rust FPS will depend on how the game engine handles each architecture.

Q: Is 12 GB of VRAM enough for Rust?

A: Yes, the 12 GB VRAM capacity is not the limiting factor in these measurements. The 432.0 GB/s memory bandwidth is what constrains performance at 4K, not the total VRAM size, as the FPS differences between Low and High settings point to bandwidth sensitivity.

Q: Will the i5-14400F bottleneck the RX 6750 XT?

A: No, the data shows the opposite. At 1080p Low, the system hits 173.9 FPS, which is high enough to suggest the CPU is keeping pace. At higher resolutions, the GPU becomes the bottleneck, so the CPU's 10 cores and 4.70 GHz boost clock are sufficient.

Q: What is the expected frame rate at 1080p Ultra?

A: The measured average is 77.1 FPS at 1920x1080 with Ultra settings. This is playable, but the drop from Medium (115.3 FPS) to Ultra (77.1 FPS) is significant, indicating that the Ultra preset's extra effects are costly.

Settings Recommendations

The measured FPS data provides a clear hierarchy of what this system can handle. At 1080p, the Low preset delivers a massive 173.9 FPS, which is ideal for competitive play or high-refresh-rate monitors, but it sacrifices visual fidelity. Medium at 115.3 FPS is the best balance for most users, offering smooth gameplay with reasonable detail. High at 96.9 FPS is still very playable, while Ultra at 77.1 FPS is acceptable if you prefer maximum eye candy.

For 1440p, the recommendation shifts. The Low preset at 117.3 FPS is excellent for fast-paced gameplay, but Medium at 78.1 FPS is the best overall choice, providing a good mix of performance and visual quality. High at 68.7 FPS is the threshold for a 60 Hz monitor, and Ultra at 53.3 FPS is only suitable if you are willing to tolerate occasional dips below 60 FPS. Given the data, Medium is the sweet spot for 1440p.

At 4K, the situation is dire. The Low preset at 68.4 FPS is the only playable option, and even that is marginal. Medium at 45.7 FPS, High at 38.3 FPS, and Ultra at 28.7 FPS are all below acceptable thresholds for a smooth experience. Therefore, the data suggests that 4K should be avoided entirely unless you are willing to drop to Low settings and accept the visual downgrade. For most users, the best experience is 1440p Medium or 1080p High, depending on your monitor's native resolution and refresh rate.

Measured FPS Breakdown

The complete set of measured average frame rates is as follows:

At 1920x1080, the Low preset achieves 173.9 FPS, Medium reaches 115.3 FPS, High hits 96.9 FPS, and Ultra drops to 77.1 FPS. This shows a clear 55.4% performance penalty from Low to Ultra, but even the lowest result is comfortably playable.

At 2560x1440, the frame rates are 117.3 FPS (Low), 78.1 FPS (Medium), 68.7 FPS (High), and 53.3 FPS (Ultra). The drop from Medium to High is 9.4 FPS, which is noticeable, but the Medium preset remains the most balanced.

At 3840x2160, the results are 68.4 FPS (Low), 45.7 FPS (Medium), 38.3 FPS (High), and 28.7 FPS (Ultra). The gap between Low and Medium is 22.7 FPS, which is the largest single-setting jump across all resolutions, highlighting how quickly the GPU's bandwidth is exhausted.

The data shows that from 1080p to 4K, the Low preset retains 39.3% of its original performance, while the Ultra preset retains only 37.2%. This consistency suggests that the RX 6750 XT's scaling is uniform across settings, with no single preset causing an unexpected collapse. The i5-14400F's strong single-thread performance is evident in the 1080p results, where it allows the GPU to stretch its legs at 173.9 FPS, but the CPU is never the limiting factor in any of these measured scenarios.