Rust

The AMD Ryzen 9 9900X paired with the NVIDIA GeForce RTX 5090 D delivers a performance profile in Rust that is defined by extreme CPU headroom and a GPU that scales predictably with resolution and settings. The measured data shows a system that is capable of very high frame rates at 1080p and 1440p, with 4K Ultra being the only configuration that brings it below the 60 FPS threshold. This analysis breaks down the measured results to guide settings choices and explain where the bottleneck lies.

Settings Recommendations

For this specific combination, the measured FPS data points to a clear hierarchy in settings presets across all three tested resolutions. At 1920x1080, the Low preset produces an average of 274 FPS, while Medium drops to 233 FPS, High to 197 FPS, and Ultra to 150 FPS. The gap between Low and Medium is 41 FPS, between Medium and High is 36 FPS, and between High and Ultra is 47 FPS. These are substantial differences, but even at Ultra the system maintains an average above 144 FPS, which exceeds the refresh rate of most high-end monitors. At 2560x1440, the pattern shifts slightly: Low averages 239 FPS, Medium 161 FPS, High 136 FPS, and Ultra 103 FPS. The drop from Medium to High here is 25 FPS, and from High to Ultra is 33 FPS. At 3840x2160, the numbers become more moderate: Low averages 141 FPS, Medium 95 FPS, High 80 FPS, and Ultra 61 FPS.

The optimal preset depends on the target display. For 1080p gamers with a 240 Hz monitor, the High preset at 197 FPS is the sweet spot, as it delivers a significant visual upgrade over Low (274 FPS) while still staying above 144 FPS. The Ultra preset at 150 FPS is also viable for 144 Hz displays, but the 47 FPS cost over High may not justify the visual gains in a survival game where distant object rendering matters more than fine texture detail. For 1440p, the Medium preset at 161 FPS is the best balance, providing a 25 FPS advantage over High (136 FPS) while keeping the experience smooth on 144 Hz panels. The Ultra preset at 103 FPS is playable but leaves performance on the table relative to what this hardware can deliver. For 4K, the Medium preset at 95 FPS is the recommended starting point, as it stays above the 60 FPS baseline and offers a 15 FPS improvement over High (80 FPS). The Ultra preset at 61 FPS is technically playable but leaves almost no margin for frame drops in busy scenes, which is risky in Rust where player bases and explosions can cause sudden load spikes.

The data also shows that the Medium preset is the only one with recorded min and max FPS values across all resolutions. At 1080p Medium, the min is 198 FPS and max is 268 FPS, indicating a narrow frame time distribution. At 1440p Medium, min is 136 FPS and max is 185 FPS. At 4K Medium, min is 81 FPS and max is 109 FPS. This consistency suggests that Medium is the most stable preset in terms of frame pacing, which is critical for competitive play in a game where quick reactions matter. Given that the Low preset at 4K (141 FPS) is only 46 FPS faster than Medium (95 FPS), the visual quality gain from Medium is substantial relative to the performance cost. Therefore, the data supports Medium as the default recommendation for this combo, with High or Ultra reserved for users who prioritize image fidelity over frame rate.

GPU Role

The RTX 5090 D is a dominant graphics card by any measure, and its role in Rust is defined by its massive memory pool and high clock speeds rather than any architectural deficiency. The GPU features 32 GB of GDDR7 memory on a 512-bit bus, yielding a bandwidth of 1.79 TB/s. The base clock is 2017 MHz with a boost clock of 2407 MHz. These specs translate into raw throughput that is more than sufficient for Rust’s rendering demands, which are not particularly exotic compared to modern AAA titles. The measured FPS at 1080p Low (274 FPS) demonstrates that the GPU is never the primary limiter at lower resolutions, as the CPU is capable of feeding it frames faster than most displays can show.

At 4K Ultra, the GPU’s role becomes more prominent. The average FPS drops to 61, which is 89 FPS lower than 4K Low (141 FPS). This 63% reduction in frame rate from Low to Ultra at the same resolution indicates that the GPU is being pushed to its limits by the increased shading and texture work. However, the fact that 4K Ultra still maintains a 61 FPS average shows that the RTX 5090 D has enough compute headroom to handle Rust’s heaviest settings at 4K, albeit with no room for error. The GPU’s 104.8 TFLOPS FP32 performance and 1,636.8 GTexel/s texture rate are the key metrics here, as Rust’s terrain and building textures rely heavily on texture fetch and pixel shading.

The GPU’s 32 GB VRAM is overkill for Rust, which is not a memory-hungry title by modern standards. However, this capacity ensures that there is zero risk of VRAM-related stutters or texture pop-in, even at 4K Ultra with high-resolution texture packs. In comparison to the CPU side, where the Ryzen 9 9900X has 64 MB of L3 cache, the GPU’s 1.79 TB/s bandwidth is the more critical resource for maintaining consistent frame times. The measured data shows that the GPU’s performance scales linearly with resolution: from 1080p Low (274 FPS) to 1440p Low (239 FPS) is a 13% drop, and from 1440p Low to 4K Low (141 FPS) is a 41% drop. This scaling pattern is typical for a GPU-bound scenario at higher resolutions, but the fact that 4K Low is still above 140 FPS indicates that the RTX 5090 D is not being stressed until the Ultra preset is applied.

Resolution Scaling

The measured FPS across resolutions reveals how this combo scales with pixel count. At Low settings, the progression is 274 FPS at 1080p, 239 FPS at 1440p, and 141 FPS at 4K. This represents a 13% drop from 1080p to 1440p, but a 41% drop from 1440p to 4K. The larger drop at 4K suggests that the GPU is beginning to become the limiting factor, even at Low settings, because the pixel fill rate demand increases significantly. At Medium settings, the progression is 233 FPS at 1080p, 161 FPS at 1440p, and 95 FPS at 4K. Here, the drop from 1080p to 1440p is 31%, and from 1440p to 4K is 41%. At High settings, the numbers are 197 FPS at 1080p, 136 FPS at 1440p, and 80 FPS at 4K, with drops of 31% and 41% respectively. At Ultra settings, the progression is 150 FPS at 1080p, 103 FPS at 1440p, and 61 FPS at 4K, with drops of 31% and 41% as well.

The consistent 41% drop from 1440p to 4K across all settings is a strong indicator that the GPU is the bottleneck at 4K, regardless of the visual preset. This is expected because 4K has 2.25 times the pixels of 1440p, and the RTX 5090 D’s rendering pipeline must process that additional load. The 31% drop from 1080p to 1440p is smaller, which suggests that at 1080p, the CPU is partially limiting performance, especially at Low settings where the frame rate exceeds 270 FPS. At 1080p Low, the Ryzen 9 9900X’s 5.60 GHz boost clock is likely the limiting factor, as the GPU has plenty of headroom to render frames faster than the CPU can issue draw calls.

This scaling behavior means that users with 1080p or 1440p displays will see diminishing returns from lowering settings to Low, as the CPU will cap the frame rate. At 4K, however, lowering settings from Ultra to Low yields a 131% increase in frame rate (from 61 to 141 FPS), which is a massive gain that makes Low the recommended preset for competitive play at that resolution. The data also shows that the gap between High and Ultra settings is consistent at around 19-24% across all resolutions, which is a typical cost for the highest quality shadows and post-processing effects.

Measured FPS Breakdown

At 1920x1080, the measured averages are as follows: Low settings produce 274 FPS, Medium produces 233 FPS with a min of 198 FPS and max of 268 FPS, High produces 197 FPS, and Ultra produces 150 FPS. The delta between Low and Medium is 41 FPS (15% reduction), Medium to High is 36 FPS (15% reduction), and High to Ultra is 47 FPS (24% reduction). The min FPS at Medium (198 FPS) is still higher than the average FPS at High (197 FPS), which indicates that even the worst frame times at Medium are comparable to the average frame time at High. This makes Medium the most consistent preset at 1080p, as it maintains a minimum above 144 FPS, which is the threshold for most high-refresh-rate monitors.

At 2560x1440, the averages are: Low at 239 FPS, Medium at 161 FPS (min 136, max 185), High at 136 FPS, and Ultra at 103 FPS. The delta from Low to Medium is 78 FPS (33% reduction), Medium to High is 25 FPS (16% reduction), and High to Ultra is 33 FPS (24% reduction). The min FPS at Medium (136 FPS) is just below the 144 FPS threshold, which means there will be occasional dips below the refresh rate of a 144 Hz monitor. However, the average of 161 FPS provides enough headroom that these dips are likely to be infrequent. High at 136 FPS is right at the 144 Hz threshold, but its average being 25 FPS lower than Medium means it will dip below 120 FPS more often. Ultra at 103 FPS is best suited for 100 Hz monitors, as it stays above that refresh rate.

At 3840x2160, the averages are: Low at 141 FPS, Medium at 95 FPS (min 81, max 109), High at 80 FPS, and Ultra at 61 FPS. The delta from Low to Medium is 46 FPS (33% reduction), Medium to High is 15 FPS (16% reduction), and High to Ultra is 19 FPS (24% reduction). The min FPS at Medium (81 FPS) is above the 60 FPS baseline for smooth gameplay, and the max of 109 FPS shows that the system can burst higher. High at 80 FPS is also above 60 FPS, but its average is 15 FPS lower than Medium, which means it will be more susceptible to drops below 60 FPS in heavy scenes. Ultra at 61 FPS is the only preset that averages below 80 FPS, and with no min FPS recorded, it is the riskiest choice for maintaining a stable experience.

How This Combo Ranks

The AMD Ryzen 9 9900X + NVIDIA GeForce RTX 5090 D combination ranks 9th out of 2953 tested combos in Rust. This places it in the top 0.3% of all systems measured, which is exceptional. The rank reflects the raw power of both components, but it is important to note that the CPU’s benchmark scores are not the highest in its class. The Ryzen 9 9900X has an average benchmark score of 57498, which is 0.1% lower than the AMD EPYC 9015 (57555), 0.2% higher than the AMD EPYC 7313 (57399), 1.1% lower than the Intel Core i9-14900 (58115), and 1.4% lower than the Intel Xeon Platinum 8260M (58323). These nearest rivals are all server or high-end desktop parts, and the differences are within a few percentage points, meaning the 9900X is not leaving performance on the table relative to its direct competitors.

The GPU’s average benchmark score is 77712, which is 1.1% higher than the AMD Radeon RX 6650M XT (76904), 1.6% lower than the AMD Radeon RX 6850M XT (78940), 2.1% lower than the NVIDIA Tesla P100 PCIe 12 GB (79396), and 2.4% lower than the NVIDIA Tesla P100 PCIe 16 GB (79605). These rivals are mobile or older data center parts, which makes the RTX 5090 D’s position impressive but not dominant. The 92nd percentile ranking for both the CPU and GPU among all their respective parts confirms that this is a top-tier combination, but the 9th place in Rust specifically suggests that the game’s engine does not fully leverage the GPU’s strengths, as a higher rank would require more consistent scaling at 4K Ultra.

The fact that this combo ranks 9th despite the GPU being in the 92nd percentile of all GPUs indicates that Rust is more CPU-sensitive than many other titles. The Ryzen 9 9900X’s 12 cores and 24 threads are more than sufficient, but the game’s single-threaded performance demands are high, as evidenced by the 3dmark single-thread score of 1286 and the passmark single_thread score of 4672. The 9th place ranking is a strong result, but it leaves room for higher-performing CPUs like the Intel Core i9-14900, which has a higher average benchmark score (58115) and would likely rank higher in Rust if paired with the same GPU.

CPU Role

The AMD Ryzen 9 9900X is a 12-core, 24-thread processor based on the Zen 5 architecture (Granite Ridge), manufactured on a 4 nm TSMC process. It has a base clock of 4.40 GHz and a boost clock of 5.60 GHz, with a TDP of 120 W. The cache hierarchy includes 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The CPU supports DDR5 memory in a dual-channel configuration with a bandwidth of 89.6 GB/s. These specifications make it a high-end desktop part, but its role in Rust is defined more by its single-threaded performance than its core count.

The measured FPS data shows that at 1080p Low, the system achieves 274 FPS, which is likely near the CPU’s maximum frame generation capability. The 3dmark single-thread score of 1286 and cinebench R15 single-core score of 353 indicate that the 9900X has strong single-thread performance, but not the absolute best. Its average benchmark score of 57498 is 1.1% lower than the Intel Core i9-14900 (58115), which suggests that the Intel part would be slightly faster in CPU-bound scenarios. However, the 9900X’s 64 MB L3 cache is larger than many competitors, which helps in games with large data sets like Rust, where the game world is persistent and requires frequent memory access.

The CPU’s multi-threaded performance is also relevant, as Rust can utilize multiple cores for physics and world simulation. The cinebench R23 multicore score of 32172 and passmark multithread score of 54643 show that the 9900X is a capable multi-threaded processor, but the 3dmark_max_threads score of 13929 is only 11% higher than the 3dmark_16_threads score of 12552, indicating that scaling beyond 16 threads provides diminishing returns. This is consistent with Rust’s engine, which typically uses fewer than 8 threads effectively. The 12-core configuration ensures that there is never a shortage of threads for background tasks, but the game’s performance is primarily dictated by the boost clock of 5.60 GHz.

At 4K Ultra, the CPU’s role diminishes, as the GPU becomes the bottleneck. The measured drop from 1080p Ultra (150 FPS) to 4K Ultra (61 FPS) is 59%, which is almost entirely due to the GPU’s rendering load. However, the fact that 4K Low still achieves 141 FPS shows that the CPU is not limiting at 4K even with the lowest settings, as the GPU is still able to push frames at a rate that exceeds the CPU’s minimum frame generation threshold. In practical terms, the Ryzen 9 9900X provides enough headroom that users can rely on the GPU to be the primary performance variable, which is a good position to be in for a system that may be paired with different GPUs in the future. The CPU’s PCIe Gen 5 support (24 lanes) also ensures that the RTX 5090 D’s PCIe 5.0 x16 interface is fully utilized, eliminating any potential bus bottleneck.