Rust

CPU Role — cores, clocks, and how they relate to this game's results

The AMD Ryzen 5 2600 is a 6-core, 12-thread processor from the 2000 series, built on the Zen+ architecture (Pinnacle Ridge) using a 12 nm process. Its base clock of 3.40 GHz and boost clock of 3.90 GHz, paired with a shared 16 MB L3 cache, position it as a capable mid-range desktop part. In Rust, a game known for heavy server-side simulation and physics calculations, the CPU's multi-threaded throughput matters significantly. The data shows the Ryzen 5 2600 scores 4,698 in Cinebench R20 multi-core and 11,186 in Cinebench R23 multi-core, indicating solid parallel processing ability for handling the game's entity and building logic.

The CPU's single-thread performance is more modest. Its Cinebench R23 single-core score of 1,579 and PassMark single-thread score of 2,239 suggest that while the processor can handle Rust's core game loop, it may become a bottleneck in scenarios where single-threaded performance dominates. This is particularly relevant in Rust, where player interactions and building updates often rely on a few primary threads. The gap between the multi-core and single-core scores—roughly a 7:1 ratio in Cinebench R23—highlights that the processor is better suited for broad parallel workloads than for latency-sensitive single-thread tasks. In the measured FPS data, this manifests as a noticeable ceiling at 1080p Low, where the average FPS of 133.8 likely reflects the CPU's limit rather than the GPU's capability.

How This Combo Ranks

This combination of the AMD Ryzen 5 2600 and AMD Radeon RX 6700 XT ranks 976 out of 1,717 tested combos in Rust. That places it in the lower-middle portion of the benchmark database, which is a notable finding given the GPU's strength. The RX 6700 XT alone sits at the 77th percentile among all GPUs, while the Ryzen 5 2600 also holds the 77th percentile among all CPUs. Yet the combo's rank in Rust suggests that the pairing is not optimally balanced for this specific title. The CPU's average benchmark score of 19,616 is nearly identical to its nearest rivals: the Intel Core i5-1345U scores 19,691 (0.4% higher), the AMD Ryzen 5 7530U scores 19,508 (0.6% lower), and the Intel Core i5-11600KF scores 19,740 (0.6% higher). This indicates the Ryzen 5 2600 is competitive with those parts in general compute, but Rust's specific demands may favor architectures with stronger per-core efficiency.

In terms of the GPU, the RX 6700 XT's average benchmark score of 33,721 is closely matched by the AMD Radeon RX 6800 (33,493, 0.7% lower), while the older AMD Radeon HD 7950 and RX 480 score 34,050 and 34,059 respectively (both about 1% higher). This shows the RX 6700 XT is a strong performer in synthetic tests, yet the combo rank of 976/1,717 implies that in Rust, the CPU is holding back the system from reaching higher tiers. The rank is not an indictment of either component individually; rather, it reflects the measured FPS being constrained by the processor in several settings.

Resolution Scaling

The measured FPS data reveals a clear pattern of resolution scaling that identifies the bottleneck. At 1080p with Low settings, the combo achieves 133.8 FPS. Moving to 1440p Low drops this to 111.3 FPS, and at 4K Low it falls to 69.5 FPS. The drop from 1080p to 1440p is 16.8%, while the drop from 1440p to 4K is 37.5%. This accelerating decline as resolution increases indicates that at lower resolutions, the CPU is the limiting factor, while at higher resolutions, the GPU becomes more dominant. The fact that 1080p Low does not exceed 133.8 FPS—despite the GPU being capable of far more—confirms a CPU ceiling.

Conversely, at Ultra settings, the scaling is more linear: 73.4 FPS at 1080p, 46.7 FPS at 1440p, and 29.9 FPS at 4K. The percentage drops are 36.4% and 36.0% respectively, suggesting a more balanced load between CPU and GPU at these high settings. The 4K Ultra result of 29.9 FPS is particularly telling—it shows that even with a strong GPU, the combination cannot sustain playable frame rates at the highest resolution and quality. The data suggests that for this pairing, 1080p is where the CPU bottleneck is most pronounced, while 4K shifts the burden fully onto the GPU, exposing its limits in Rust's demanding rendering.

Measured FPS Breakdown

At 1920x1080, the measured average FPS across settings are: Low 133.8, Medium 112.7, High 95.8, and Ultra 73.4. The progression from Low to Ultra represents a 45.1% drop in performance, which is substantial but expected given the increased graphical load. The gap between Medium and High (16.9 FPS) is smaller than the gap between High and Ultra (22.4 FPS), indicating that Ultra settings impose a disproportionately heavy cost. At this resolution, even Ultra remains playable above 60 FPS, making 1080p the most flexible option for this combo.

Moving to 2560x1440, the averages are: Low 111.3, Medium 75.5, High 62.7, and Ultra 46.7. Here, the drop from Low to Medium is steep at 32.1%, while Medium to High falls another 16.9%. The High setting at 62.7 FPS is still above the 60 FPS threshold, but Ultra at 46.7 FPS falls below it. At 1440p, the CPU bottleneck seen at 1080p Low (133.8 FPS) is less severe, but the GPU is now clearly struggling with Ultra settings. At 3840x2160, the averages are: Low 69.5, Medium 43.5, High 38.8, and Ultra 29.9. Only Low settings manage to stay above 60 FPS; Medium and High are playable but not smooth, and Ultra is effectively a slideshow. The 4K results show that this combo is not suited for high-fidelity 4K gaming in Rust, regardless of the CPU's contribution.

GPU Role

The AMD Radeon RX 6700 XT is built on the RDNA 2.0 architecture with the Navi 22 chip, fabricated on a 7 nm process by TSMC. It features 2,560 shading units, 160 texture mapping units, and 64 raster operation units, along with 40 ray tracing cores. The GPU's base clock is 2,321 MHz, with a boost clock of 2,581 MHz and a game clock of 2,424 MHz. Memory consists of 12 GB of GDDR6 on a 192-bit bus, yielding a bandwidth of 384.0 GB/s. This is a robust configuration for a mid-to-high-end GPU, reflected in its PassMark G3D score of 19,786 and its 77th percentile ranking among all GPUs.

In Rust, the GPU's role becomes evident when comparing settings at the same resolution. At 1080p, the difference between Low (133.8 FPS) and Ultra (73.4 FPS) is 60.4 FPS, showing that the GPU is capable of delivering high frame rates when the CPU allows. At 4K, the GPU's limits are exposed: even on Low, the average FPS is 69.5, which is less than half of the 1080p Low result. This 48% reduction at the same settings across resolution indicates that the GPU is the primary bottleneck at 4K. The RX 6700 XT's 12 GB VRAM is ample for Rust, and its 384.0 GB/s bandwidth handles texture streaming well, but the raw compute power (13.21 TFLOPS FP32) is insufficient for 4K Ultra in this game, as evidenced by the 29.9 FPS result.

Settings Recommendations

Based on the measured FPS rows, the best experience for this combo is at 1080p with High settings, yielding 95.8 FPS. This strikes a balance between visual fidelity and smoothness, staying well above the 60 FPS threshold while providing a meaningful upgrade over Medium (112.7 FPS) in terms of graphical quality. The drop from High to Ultra at 1080p (22.4 FPS) is not worth the marginal visual gain, especially since Ultra at 73.4 FPS is still playable but less consistent. For players who prioritize frame rate, 1080p Low at 133.8 FPS offers the highest headroom, but the visual compromises are significant.

At 1440p, High settings provide 62.7 FPS, which is borderline playable but may suffer in intense moments. Medium at 75.5 FPS is a safer choice for 1440p, offering better consistency without a large quality penalty. For 4K, only Low settings (69.5 FPS) are recommended; Medium (43.5 FPS) and above fall below playable thresholds. The data strongly suggests that this combo is best utilized at 1080p, where the CPU and GPU are better matched, and that pushing to 1440p or 4K requires accepting significant compromises in either settings or frame rate.

FAQ

Q: What is the best resolution for this CPU-GPU combo in Rust?

A: The data shows 1080p provides the highest average FPS across all settings, with Low at 133.8 FPS and Ultra at 73.4 FPS. At 1440p, only Low (111.3 FPS) and Medium (75.5 FPS) exceed 60 FPS, while at 4K, only Low (69.5 FPS) is playable.

Q: Is the CPU or GPU the bottleneck at 1080p Low settings?

A: The result of 133.8 FPS at 1080p Low appears CPU-limited, as the RX 6700 XT is capable of higher frame rates in other scenarios. The Ryzen 5 2600's single-thread score of 2,239 in PassMark supports this, indicating the processor cannot push beyond this threshold in Rust.

Q: How does this combo's rank compare to other tested systems?

A: It ranks 976 out of 1,717 tested combos in Rust, placing it in the lower-middle tier. This is below what the GPU's individual 77th percentile ranking would suggest, due to the CPU's constraints.

Q: What FPS can I expect at 1440p Ultra settings?

A: The measured average is 46.7 FPS at 2560x1440 with Ultra settings. This falls below the 60 FPS threshold and may result in noticeable stuttering in action-heavy scenes.

Q: Is the RX 6700 XT's 12 GB VRAM sufficient for Rust?

A: Yes, the 12 GB GDDR6 memory with 384.0 GB/s bandwidth is more than enough for Rust, as the game's requirements are modest. The bottleneck at higher resolutions is compute power, not memory capacity.

Q: How does the Ryzen 5 2600 compare to its nearest CPU rivals in general benchmarks?

A: Its average benchmark score of 19,616 is within 0.7% of the Intel Core i5-1345U (19,691), AMD Ryzen 5 7530U (19,508), Intel Core i5-11600KF (19,740), and Intel Core i7-10700F (19,485), indicating near-identical overall performance.