Rust

The Intel Core i5-9400 paired with the NVIDIA GeForce RTX 3070 Ti presents an interesting study in Rust, a survival title known for its demanding simulation and rendering loads. The measured frame rates across three resolutions reveal a system that is heavily influenced by the graphics settings chosen, with the CPU often acting as the primary constraint at lower resolutions and the GPU taking over at 4K. This analysis breaks down the data to show exactly where the bottleneck lies and what the performance figures mean for the overall ranking of this combination.

Resolution Scaling

The data shows a clear and expected trend: as resolution increases, average frame rates drop, but the magnitude of that drop varies significantly depending on the quality preset. At 1080p, the system is capable of delivering high frame rates, with the Low preset hitting 142 FPS and the High preset reaching 110 FPS. This relatively small gap between Low and High at 1080p suggests that the CPU is the limiting factor, as the GPU has enough headroom to handle the increased graphical load without a massive penalty.

Moving to 1440p, the scaling becomes more pronounced. The Low preset drops from 142 FPS to 125 FPS, a 12% decrease, while the High preset falls from 110 FPS to 76 FPS, a more significant 31% drop. This indicates that the GPU is starting to become more involved, particularly at the High settings where the additional pixel count begins to strain the RTX 3070 Ti. The Medium preset at 1440p shows a 90 FPS average, with a minimum of 76 FPS and a maximum of 103 FPS, showing a tighter performance window than the 4K results.

At 4K, the GPU is clearly the dominant bottleneck. The High preset manages an average of just 45 FPS, which is a 41% reduction from the 1440p High score. The Ultra preset at 4K is the most demanding configuration tested, yielding only 34 FPS, which is effectively unplayable for a fast-paced survival game. The Low preset at 4K produces 79 FPS, which is a playable number, but the fact that it is lower than the 1080p Medium preset (122 FPS) underscores the massive pixel throughput required at 3840x2160. The scaling from 1080p to 4K on the High preset shows a 59% reduction in frame rate, confirming that the RTX 3070 Ti's 8 GB of VRAM and memory bandwidth are being pushed to their limits at the higher resolution, while the i5-9400's six cores are less of a factor in this scenario.

CPU Role

The Intel Core i5-9400 is a six-core, six-thread processor based on the Coffee Lake architecture. It has a base clock of 2.90 GHz and a boost clock of 4.10 GHz. In Rust, which is known for being CPU-intensive, this processor's performance is a critical factor. The benchmark results for the CPU, such as its Cinebench R23 multi-core score of 6629 and single-core score of 935, place it in the 47th percentile of all CPUs. This suggests it is a mid-range performer, which is reflected in the game's frame rates at lower resolutions.

At 1080p, the CPU's influence is most apparent. The fact that the Low preset (142 FPS) is only 32 FPS faster than the Ultra preset (84 FPS) is a strong indicator that the CPU is preventing the GPU from reaching its full potential. In a less CPU-bound scenario, the gap between Low and Ultra would typically be much larger, as the GPU would be doing more work. The i5-9400's performance is close to its nearest rivals, such as the Intel Core i7-1068NG7, which has an average benchmark score of 2259 (a 0.2% difference), and the AMD Ryzen 5 PRO 1500, which scores 2246 (a 0.4% difference). This indicates that the CPU is performing as expected for its class.

The CPU's lack of hyper-threading means it has only six threads to manage all game logic, physics, and draw calls. In Rust, with its large player bases and complex world interactions, this can lead to frame drops in busy areas. The measured data shows that the minimum FPS at 1440p Medium is 76 FPS, which is a significant drop from the 90 FPS average, suggesting that the CPU can struggle to maintain consistent frame pacing when the simulation load spikes. While the boost clock of 4.10 GHz helps with single-threaded performance, the six-core configuration appears to be the limiting factor in achieving higher frame rates at 1080p, where the GPU is not yet the primary constraint.

How This Combo Ranks

In the grand scheme of tested hardware combinations for Rust, this pairing of the Intel Core i5-9400 and the NVIDIA GeForce RTX 3070 Ti holds a combo rank of 1625 out of 3723 combos. This places it in the 43rd percentile of all tested systems, meaning that roughly 57% of the combinations tested by the database perform better in this specific game. This ranking is a reflection of the balance between the CPU and GPU, and it highlights the fact that while the GPU is powerful, the CPU holds the system back from reaching the upper echelons of performance.

The GPU itself is a high-end part, ranking in the 75th percentile of all GPUs, with an average benchmark score of 29945. Its nearest rivals include the NVIDIA GeForce RTX 5070 Mobile (0.1% faster), the AMD Radeon RX 6800 (0.5% slower), and the NVIDIA GeForce RTX 2080 Ti (0.5% faster). This shows that the RTX 3070 Ti is a very capable card, but its potential is not fully realized in this combination due to the CPU.

The combo's rank of 1625 suggests that users with a stronger CPU, such as a higher-end Ryzen or Intel Core i7/i9, would likely see a significant improvement in frame rates, especially at 1080p and 1440p. The data indicates that the RTX 3070 Ti is capable of much higher performance than the i5-9400 allows it to achieve. For example, at 1080p Medium, the system produces 122 FPS, but a more balanced system with a faster CPU could potentially push that number higher, as the GPU would be less idle. This rank is a clear indication that the CPU is the limiting component in this pairing for Rust, and the overall performance is defined by this imbalance.

FAQ

Q: Can I play Rust at 4K with this CPU and GPU combination?

A: Yes, but only with significant compromises. The data shows that at 4K on Low settings, the system achieves an average of 79 FPS. However, at 4K on High settings, the average drops to 45 FPS, and on Ultra it falls to 34 FPS, which is not a smooth experience.

Q: Is the Intel Core i5-9400 a bottleneck for the RTX 3070 Ti in Rust?

A: Yes, the evidence suggests it is. At 1080p, the frame rate difference between Low (142 FPS) and Ultra (84 FPS) is relatively small, which indicates the CPU is limiting performance. A faster CPU would likely allow the RTX 3070 Ti to produce higher frame rates at these lower resolutions.

Q: What is the best resolution to use for a balance of visual quality and performance?

A: The 1440p Medium setting appears to be a sweet spot. It delivers an average of 90 FPS with a minimum of 76 FPS, which is a smooth experience for a survival game. This is a better balance than 1080p, where the CPU bottleneck is more evident, or 4K, where the GPU struggles.

Q: How does this combo rank compared to other systems?

A: This combination is ranked 1625 out of 3723 tested combos for Rust. This means it performs better than about 43% of the systems in the database, indicating that while it is a functional gaming PC, it is not a top-tier performer for this specific title.

Q: Should I use the Ultra preset at 1440p?

A: The data shows that the Ultra preset at 1440p yields an average of 58 FPS. While this is playable, it is lower than the Medium preset and will require more from the GPU. The Medium preset at 1440p offers a higher frame rate and may be a better choice for competitive play.

Q: Is the RTX 3070 Ti a good match for this game?

A: The GPU is very powerful, ranking in the 75th percentile of all GPUs. However, its performance is hampered by the i5-9400, especially at lower resolutions. In a system with a more powerful CPU, the RTX 3070 Ti would likely perform much better in Rust.

GPU Role

The NVIDIA GeForce RTX 3070 Ti is a high-end graphics card built on the Ampere architecture. It features 8 GB of GDDR6X memory on a 256-bit bus, providing a memory bandwidth of 608.3 GB/s. Its boost clock is rated at 1770 MHz, and it has 6144 shading units. These specifications make it a formidable GPU, capable of handling modern titles at high resolutions. In Rust, its role becomes increasingly critical as the resolution and quality settings increase.

At 1080p and 1440p, the GPU's performance is partially masked by the CPU bottleneck. The card has plenty of headroom to render frames, but it is often waiting for the CPU to provide data. This is why the frame rates for Low and High settings at 1080p are relatively close. However, at 4K, the GPU's workload becomes the primary constraint. The pixel count is so high that the RTX 3070 Ti's raw compute power and memory bandwidth are put to the test.

The measured data shows that at 4K, the High preset achieves 45 FPS, while the Medium preset achieves 53 FPS. The Low preset at 4K is the only one that breaks the 60 FPS barrier, hitting 79 FPS. This indicates that for 4K gaming, the user must significantly reduce the graphical fidelity to maintain a playable frame rate. The GPU's performance in Rust is consistent with its benchmark scores, such as its Passmark G3D score of 23356, which places it in the 75th percentile of all GPUs. Its nearest rival, the NVIDIA GeForce RTX 2080 Ti, has a similar average benchmark score (29783), and the performance in Rust is likely to be comparable at similar settings. The 8 GB of VRAM is sufficient for 1080p and 1440p, but at 4K with Ultra textures, it could become a limiting factor, although the frame rates suggest the core compute is the primary bottleneck.

Settings Recommendations

Based on the measured data, the optimal settings for this combination depend heavily on the user's target resolution and desired frame rate. For 1080p gaming, the Medium preset offers an excellent balance, delivering an average of 122 FPS with a minimum of 104 FPS. This ensures a smooth and responsive experience in Rust's fast-paced environments. While the Low preset yields a higher average of 142 FPS, the visual quality trade-off is significant, and the Medium preset provides a much better visual experience with only a 14% performance penalty.

At 1440p, the Medium preset is again the strongest recommendation. It produces an average of 90 FPS with a minimum of 76 FPS, which is comfortably playable and looks much sharper than 1080p. The High preset at 1440p drops to 76 FPS, which is still playable but leaves less headroom for demanding scenes. For users who prioritize frame rate over visual fidelity, the Low preset at 1440p offers 125 FPS, but the visual quality is noticeably reduced.

For 4K gaming, the data shows that the Ultra preset is not viable, with an average of only 34 FPS. The High preset is also borderline, at 45 FPS. The only playable option at 4K is the Low preset, which achieves an average of 79 FPS. This suggests that 4K is not a practical resolution for this combination if you want to enjoy the game's higher visual settings. A better approach would be to play at 1440p with the Medium or High preset, which offers a superior balance of visual quality and performance compared to sacrificing settings at 4K. The Medium preset at 1440p provides a minimum FPS of 76, which is higher than the average FPS of the High preset at 4K, making it the clear choice for a smooth and visually appealing experience.