Rust

The AMD Ryzen 7 7800X3D paired with the NVIDIA GeForce RTX 5090 produces a frame rate curve in Rust that clearly separates the workload between the CPU and GPU. At 1080p, the combination is heavily CPU-bound, while at 4K the GPU takes over as the primary limiter. This analysis walks through the measured data to show where the bottleneck shifts and how the hardware behaves across settings.

Resolution Scaling

The measured FPS data shows a steep drop as resolution increases, but the rate of that drop depends heavily on the graphics preset. At Low settings, the average frame rate falls from 221.4 FPS at 1920x1080 to 195.8 FPS at 2560x1440, a reduction of roughly 12%. Moving from 1440p to 3840x2160 drops the average further to 133.2 FPS, representing a 32% decrease from the 1080p baseline. This pattern indicates that even at Low settings, the GPU is still doing meaningful work at higher resolutions, though the 1080p result is clearly capped by CPU performance, as the frame rate cannot scale fully with the GPU’s capability.

At Medium settings, the scaling is more aggressive. The 1080p average of 189.5 FPS drops to 153.9 FPS at 1440p, a 19% reduction, and then to 88.5 FPS at 4K, which is a 53% drop from 1080p. The jump from 1440p to 4K is particularly steep, suggesting that the RTX 5090’s raw throughput is being saturated by the higher pixel count. High settings show a similar trend: 175.8 FPS at 1080p, 131.5 FPS at 1440p, and 75.1 FPS at 4K. The 4K figure is less than half of the 1080p figure, confirming that the GPU is the limiting component at this resolution.

Ultra settings amplify the resolution penalty further. The 1080p average of 144 FPS drops to 97.4 FPS at 1440p, a 32% decline, and then to 60.1 FPS at 4K, a 58% reduction from 1080p. The gap between 1440p and 4K at Ultra is 37.3 FPS, which is the largest single-step drop in the entire dataset. This indicates that the RTX 5090, despite its 32 GB of GDDR7 memory and 1.79 TB/s bandwidth, is fully taxed by Rust’s Ultra preset at 4K. The data suggests that 1080p and 1440p results are influenced by the CPU’s 8 cores and 16 threads, while 4K results are almost purely GPU-bound.

Settings Recommendations

Based on the measured rows, the best experience depends on the target resolution and whether the goal is maximum frame rate or visual fidelity. At 1920x1080, the Low preset delivers 221.4 FPS, which is the highest average in the dataset. Medium is close behind at 189.5 FPS, and High follows at 175.8 FPS. Ultra at 1080p produces 144 FPS. For competitive play or high-refresh-rate monitors, Low or Medium at 1080p offers the smoothest motion, with Medium providing a reasonable visual upgrade over Low for a 31.9 FPS cost.

At 2560x1440, Low remains the fastest option at 195.8 FPS, but Medium at 153.9 FPS is a strong middle ground, delivering a significant visual improvement while still staying above 150 FPS. High at 131.5 FPS is also playable, but Ultra at 97.4 FPS is the first preset to fall below the 100 FPS threshold. For 1440p users, Medium appears to be the sweet spot, balancing frame rate and image quality without the steep penalty of Ultra.

At 3840x2160, the situation changes entirely. Low produces 133.2 FPS, which is the only preset that clears 100 FPS at this resolution. Medium drops to 88.5 FPS, High to 75.1 FPS, and Ultra to 60.1 FPS. For 4K gaming, Low is the only preset that maintains a high refresh rate experience. Medium is acceptable for slower-paced exploration, but High and Ultra push the system to the edge of playability, with Ultra sitting at exactly 60 FPS. The data shows that the RTX 5090 can handle 4K in Rust, but only at lower settings if the goal is to stay well above 60 FPS.

How This Combo Ranks

This specific combination of the AMD Ryzen 7 7800X3D and NVIDIA GeForce RTX 5090 ranks 33rd out of 1717 tested combos in Rust. That places it in the top 1.9% of all configurations, which is a strong result for a high-end pairing. The CPU itself holds the 87th percentile among all processors, with an average benchmark score of 31580. Its nearest rival, the Intel Core i7-12700F, scores 31543, a delta of only 0.1%. The AMD Ryzen 9 5980HX is 0.3% behind, and the AMD Ryzen 7 8700G and AMD Ryzen 7 7745HX are both 0.6% behind. This clustering shows that the 7800X3D is not significantly ahead of its closest competitors in synthetic tests, but its 96 MB of shared L3 cache and 5.00 GHz boost clock likely contribute to the strong in-game ranking.

The GPU is even more dominant in its own field. The RTX 5090 sits in the 94th percentile among all GPUs, with an average benchmark score of 84306. Its nearest rival, the NVIDIA GeForce RTX 5090 D, is only 0.1% behind at 84241. The RTX 5050 Mobile is 0.2% behind, and the AMD Radeon PRO W6600 is 1.3% behind. The NVIDIA CMP 40HX is ahead by 1.6%, but that is a compute card, not a gaming product. The GPU’s 104.8 TFLOPS of FP32 performance and 1.79 TB/s memory bandwidth make it a top-tier part, and the ranking of 33rd overall reflects that this CPU-GPU pairing is well-matched for Rust, where both components contribute to the frame rate.

Measured FPS Breakdown

The measured FPS data covers three resolutions and four settings, providing a complete picture of performance. At 1920x1080, the Low preset averages 221.4 FPS. Medium averages 189.5 FPS, which is 31.9 FPS lower. High averages 175.8 FPS, a further drop of 13.7 FPS. Ultra averages 144 FPS, which is 31.8 FPS below High. The spread from Low to Ultra at 1080p is 77.4 FPS, indicating that the CPU is able to feed the GPU enough data to maintain high frame rates even at higher settings.

At 2560x1440, Low averages 195.8 FPS. Medium averages 153.9 FPS, a 41.9 FPS drop. High averages 131.5 FPS, a 22.4 FPS drop from Medium. Ultra averages 97.4 FPS, a 34.1 FPS drop from High. The spread from Low to Ultra at 1440p is 98.4 FPS, which is larger than at 1080p, showing that the GPU becomes more of a factor as resolution increases. The gap between Medium and High at 1440p is smaller than the gap between High and Ultra, suggesting that Ultra carries a disproportionately heavy load.

At 3840x2160, Low averages 133.2 FPS. Medium averages 88.5 FPS, a 44.7 FPS drop. High averages 75.1 FPS, a 13.4 FPS drop from Medium. Ultra averages 60.1 FPS, a 15.0 FPS drop from High. The spread from Low to Ultra at 4K is 73.1 FPS, which is actually smaller than at 1440p. This is because the Low preset is still CPU-limited at 4K, while the higher presets are GPU-limited and compress toward the 60 FPS mark. The data shows that the RTX 5090 can push Rust past 130 FPS at 4K on Low, but Ultra at 4K is exactly 60.1 FPS, which is right at the edge of standard refresh rates.

FAQ

Q: What is the highest average frame rate this combo achieves in Rust?

A: The highest average is 221.4 FPS, achieved at 1920x1080 with the Low preset.

Q: Is the RTX 5090 capable of running Rust at 4K above 100 FPS?

A: Yes, but only at Low settings, where the average is 133.2 FPS. At Medium, the average drops to 88.5 FPS, and at Ultra it falls to 60.1 FPS.

Q: How much does the Ultra preset cost in frame rate compared to Low at 1440p?

A: At 2560x1440, Ultra averages 97.4 FPS, which is 98.4 FPS lower than Low’s 195.8 FPS. This is the largest preset penalty in the dataset.

Q: Where does this CPU-GPU combination rank among all tested combos in Rust?

A: This pairing ranks 33rd out of 1717 tested combos, placing it in the top 1.9% of configurations.

Q: How close is the Ryzen 7 7800X3D to its nearest rival in synthetic benchmarks?

A: The Intel Core i7-12700F is the closest rival, with an average score of 31543 versus the 7800X3D’s 31580, a difference of only 0.1%.

Q: Does the 1080p data indicate a CPU bottleneck?

A: Yes. At 1080p, the frame rate climbs to 221.4 FPS on Low, but the scaling from Low to Ultra is only a 77.4 FPS drop, suggesting the CPU is limiting the maximum output rather than the GPU.

CPU Role

The AMD Ryzen 7 7800X3D is an 8-core, 16-thread processor based on the Zen 4 architecture, manufactured on a 5 nm process by TSMC. It has a base clock of 4.20 GHz and a boost clock of 5.00 GHz, with a TDP of 120 W. The chip includes 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 96 MB of shared L3 cache. This large L3 cache is a key feature for gaming, as it reduces memory latency and improves data reuse. The CPU supports DDR5 memory with a dual-channel bus and a bandwidth of 83.2 GB/s, which is sufficient for feeding the RTX 5090’s massive frame buffer.

In Rust, the CPU’s role is most evident at lower resolutions. The 1080p results show that the frame rate does not scale linearly with GPU load, which points to the CPU as the limiting factor. The 3DMark scores illustrate the processor’s threading capability: 16 threads score 7980, while 8 threads score 6539, and 2 threads score 1887. The single-thread score of 959 is modest, but the combined multithreaded performance is strong enough to keep up with the RTX 5090 at 1080p. The Cinebench R23 multicore score of 29149 and single-core score of 4115 further confirm that the CPU excels in both lightly and heavily threaded workloads.

The 7800X3D’s 96 MB of L3 cache is likely the reason it holds its own in Rust, a game that can stress memory access patterns. The passmark data compression score of 384669 and floating-point math score of 61187 suggest solid general-purpose performance, but the cache size is the standout feature for gaming. The CPU’s percentile rank of 87 among all processors is respectable, but its nearest rivals are all within 0.6% in average score, meaning the in-game advantage comes from the specific architectural traits, not raw compute. The 5.00 GHz boost clock ensures that single-threaded game logic runs quickly, which is critical for Rust’s server-side dependent simulation. Overall, the CPU provides a stable foundation that allows the RTX 5090 to reach high frame rates at 1080p and 1440p, while the GPU takes over as the primary bottleneck at 4K.