Rust

The GeForce RTX 4090 paired with the Ryzen 7 5700X delivers a performance curve in Rust that clearly illustrates where the bottlenecks lie. At 1080p with Low settings, the combo reaches an average of 199.6 FPS, but this drops to 158.7 FPS at High settings, a 20% reduction. Moving to 1440p, the averages shift to 177.8 FPS on Low and 127.3 FPS on High, showing a steeper decline as resolution increases. The most dramatic scaling appears at 4K, where the High preset yields just 73.8 FPS, and Ultra settings pull the average down to 58.4 FPS. The gap between Low and Ultra at 4K is substantial—from 130.8 FPS down to 58.4 FPS—indicating that Rust’s higher presets impose a heavy load on the graphics pipeline.

The data suggests that at 1080p and 1440p, the CPU is a significant limiting factor. The frame rates at 1080p Low (199.6 FPS) and 1440p Low (177.8 FPS) are remarkably close, implying that the Ryzen 7 5700X cannot feed the RTX 4090 enough data to push frame rates much higher, even when the GPU has headroom. However, at 4K, the scaling becomes more GPU-bound; the difference between Low and High at 4K is 57 FPS, while at 1080p it is only 41 FPS. This shift indicates that the RTX 4090’s raw compute power is being fully utilized at higher resolutions, where pixel throughput becomes the primary constraint. The Ultra preset at 4K (58.4 FPS) versus High at 4K (73.8 FPS) shows a 21% performance hit, suggesting that the game’s highest settings include effects that disproportionately tax the GPU’s memory bandwidth and shading units.

How This Combo Ranks

Within the benchmark database, this specific pairing of the AMD Ryzen 7 5700X and NVIDIA GeForce RTX 4090 holds the 75th position out of 1,717 tested combinations in Rust. That places it in the top 4.4% of all configs, which is an exceptionally strong showing. The ranking reflects a system that is well above average for this title, but not at the absolute peak. Given that the RTX 4090 is among the fastest consumer GPUs available, the ranking is likely held back by the CPU’s performance ceiling at lower resolutions. The combo rank of 75 means there are 74 other pairings that achieve higher average frame rates in Rust, likely featuring newer or higher-clocked processors that can better keep pace with the GPU at 1080p and 1440p.

The percentile data for the individual components supports this interpretation. The CPU sits at the 83rd percentile among all processors, while the GPU is at the 91st percentile. This mismatch suggests that the processor is the weaker link in this pairing for a CPU-intensive game like Rust. In practical terms, the combo’s ranking is solidly above the median but not in the top 1%, as the CPU’s single-thread performance limits the system’s ability to fully exploit the GPU’s capabilities in lighter workloads. The gap between the combo’s rank and the GPU’s percentile indicates that other tested systems with similarly powerful GPUs but faster CPUs achieve higher scores.

GPU Role

The NVIDIA GeForce RTX 4090 is built on the Ada Lovelace architecture and features 24 GB of GDDR6X memory on a 384-bit bus, yielding a bandwidth of 1.01 TB/s. Its memory clock runs at 1313 MHz, which translates to 21 Gbps effective. The GPU has a base clock of 2235 MHz and a boost clock of 2520 MHz. In Rust, the VRAM capacity is more than sufficient; the game does not appear to be memory-limited at any tested setting, as even at 4K Ultra the frame rates are constrained by compute rather than memory capacity. The bandwidth, however, plays a role at higher resolutions, where the 1.01 TB/s throughput helps maintain playable rates at 4K High (73.8 FPS).

The GPU’s compute resources are substantial: 16,384 shading units, 512 TMUs, and 176 ROPs. These figures correlate with the observed scaling from 1080p to 4K. The RTX 4090’s FP32 performance of 82.58 TFLOPS is what drives the high frame rates at lower resolutions, but the CPU bottleneck prevents it from reaching its full potential at 1080p and 1440p. At 4K, the GPU becomes the limiting factor, and the data shows a clear drop from 130.8 FPS on Low to 58.4 FPS on Ultra, a 55% reduction. This steep decline indicates that Rust’s Ultra preset includes heavy shader and post-processing effects that are computationally expensive, even for a GPU with 128 RT cores and 512 tensor cores. The pixel rate of 443.5 GPixel/s and texture rate of 1,290.2 GTexel/s are directly relevant to the 4K results, where fill rate becomes a determinant of performance.

FAQ

Q: What is the average FPS at 1080p with High settings?

A: The combo achieves an average of 158.7 FPS at 1920x1080 with High settings.

Q: How does the RTX 4090’s VRAM affect Rust performance?

A: With 24 GB of GDDR6X memory, the GPU has abundant VRAM capacity. The data shows no memory-related stutters or limitations, as performance scales predictably with resolution and settings.

Q: Is the Ryzen 7 5700X holding back the RTX 4090 in Rust?

A: Yes, particularly at lower resolutions. At 1080p Low, the system reaches 199.6 FPS, but at 1440p Low it only drops to 177.8 FPS, suggesting the CPU cannot push frame rates much higher regardless of GPU headroom.

Q: What is the best settings preset for 4K gaming on this combo?

A: At 3840x2160, the High preset yields 73.8 FPS, which is smooth. The Ultra preset drops to 58.4 FPS, which is still playable but shows a significant 21% performance penalty over High.

Q: How does this combo rank compared to other tested configurations?

A: It holds the 75th position out of 1,717 total combos, placing it in the top 4.4% of all tested systems for Rust.

Q: What is the difference in FPS between 1080p and 4K at Medium settings?

A: At 1080p Medium, the average is 171.1 FPS, while at 4K Medium it drops to 87 FPS, representing a 49% reduction in frame rate.

CPU Role

The AMD Ryzen 7 5700X is a Zen 3 (Vermeer) processor with 8 cores and 16 threads, base clocked at 3.40 GHz and boosting to 4.60 GHz. Its 32 MB of shared L3 cache is a notable asset for Rust, which is known to be sensitive to cache latency and capacity. The CPU’s single-thread performance, as measured by a 3DMark single-thread score of 921 and a Cinebench R23 single-core score of 3,193, directly impacts the game’s frame pacing. In Rust, the data reveals a CPU-bound scenario at 1080p and 1440p Low settings. The 199.6 FPS at 1080p Low is the highest average recorded, but the improvement over 1440p Low (177.8 FPS) is modest, indicating that the CPU’s throughput is the limiting factor.

The processor’s multi-threaded capabilities, shown by a Cinebench R23 multi-core score of 22,620 and a Geekbench multi-core score of 9,720, are adequate for the game’s background tasks, but Rust primarily relies on single-thread performance for its main game logic. The 5700X’s boost clock of 4.60 GHz is respectable, yet it falls short of the frequencies seen in newer or higher-end rivals, which explains the combo’s 75th rank. The CPU’s 65W TDP and dual-channel DDR4 memory support with 51.2 GB/s bandwidth provide sufficient memory throughput, but the game’s engine is more dependent on cache and core speed than raw memory bandwidth. The data shows that as resolution increases and the GPU becomes the bottleneck, the CPU’s role diminishes, which is why the frame rate drop from 1080p to 4K is more pronounced at lower settings than at Ultra.