Rust

The AMD Ryzen 5 2600 and NVIDIA GeForce RTX 3080 Ti pairing in Rust presents a study in contrasting component generations. The data shows a 6-core, 12-thread CPU from 2018 driving a flagship-class GPU from 2021, with results that shift dramatically based on resolution and quality settings. This analysis breaks down the measured FPS data to isolate where each component becomes the limiting factor.

Resolution Scaling

The measured FPS data reveals a clear and predictable pattern as resolution increases from 1920x1080 to 3840x2160. At 1080p with High settings, the combo delivers 106 FPS average. Moving to 1440p High drops that to 87 FPS, and at 4K High, the average falls to 52 FPS. This progression represents a 29% reduction from 1080p to 1440p, and a further 40% reduction from 1440p to 4K. The scaling is steeper than a purely GPU-bound scenario would suggest, indicating that the CPU is providing diminishing returns as pixel count rises.

At Low settings, the resolution scaling is even more pronounced. The 1080p Low result of 131 FPS drops to 116 FPS at 1440p (an 11% decrease) and then plummets to 91 FPS at 4K (a 22% decrease from 1440p). The fact that Low settings at 1080p can only reach 131 FPS, despite the RTX 3080 Ti's immense compute capability, points directly to CPU limitations. The Ryzen 5 2600's Zen architecture, running at a boost clock of 3.90 GHz, simply cannot feed frames fast enough to fully utilize the GPU at lower resolutions.

The Medium settings data provides the most complete picture, with min and max FPS values recorded. At 1080p Medium, the combo averages 113 FPS with a minimum of 96 and maximum of 130. At 1440p Medium, the average is 99 FPS (min 85, max 114), and at 4K Medium, it falls to 61 FPS (min 52, max 70). The spread between min and max FPS narrows as resolution increases: 34 FPS at 1080p, 29 FPS at 1440p, and 18 FPS at 4K. This tightening range indicates that at 4K, the GPU is more consistently the bottleneck, while at 1080p, CPU-driven frame time spikes create larger variance.

Ultra settings show the most dramatic resolution penalty. The 1080p Ultra average of 96 FPS drops to 66 FPS at 1440p (a 31% decrease) and then to 39 FPS at 4K (a 41% decrease from 1440p). The 4K Ultra result of 39 FPS is the lowest measured value across all configurations, demonstrating that the combination of maximum graphical fidelity and 4K resolution overwhelms the GPU's capabilities, despite its 12 GB of GDDR6X memory and 912.4 GB/s bandwidth.

GPU Role

The NVIDIA GeForce RTX 3080 Ti is the dominant component in this pairing, built on the Ampere architecture with a GA102 chip fabricated on Samsung's 8 nm process. The GPU contains 10,240 shading units, 320 texture mapping units, and 112 raster output pipelines, along with 80 ray tracing cores and 320 tensor cores. These specifications translate to a peak FP32 performance of 34.10 TFLOPS, with texture fill rate of 532.8 GTexel/s and pixel rate of 186.5 GPixel/s.

The memory subsystem is equally formidable: 12 GB of GDDR6X on a 384-bit bus delivers 912.4 GB/s of bandwidth. The memory clock runs at 1188 MHz, with an effective data rate of 19 Gbps. This bandwidth proves crucial in Rust, a game known for large, persistent world data. At 4K Ultra settings, the 39 FPS average suggests the GPU is working near its limits, with the 12 GB frame buffer potentially becoming a constraint at maximum quality.

The GPU's benchmark scores place it in the 83rd percentile of all GPUs, with an average benchmark score of 41187. Its nearest rivals in the database include the AMD Radeon Pro 5300 (scoring 40870, a 0.8% delta), the NVIDIA Tesla M40 24 GB (41707, -1.2% delta), and the NVIDIA GeForce RTX 5070 (40377, 2% delta). These comparisons show the RTX 3080 Ti sitting in a competitive position despite being from an earlier generation.

In Rust specifically, the GPU's role becomes more pronounced at higher resolutions. The transition from 1080p to 4K at High settings reduces FPS by 51%, from 106 to 52. This substantial drop indicates that while the CPU limits performance at 1080p, the GPU takes over as the primary constraint at 4K. The RTX 3080 Ti's DirectX 12 Ultimate support and Vulkan 1.4 API compatibility align well with Rust's modern rendering requirements.

CPU Role

The AMD Ryzen 5 2600 represents an older generation of CPU technology, built on the Zen architecture (specifically Zen+ Pinnacle Ridge) using GlobalFoundries' 12 nm process. The chip contains 4,800 million transistors on a 213 mm² die, with 6 cores and 12 threads. Base clock is 3.40 GHz with a boost clock of 3.90 GHz, and the 65 W TDP reflects its efficiency-oriented design.

The CPU's cache hierarchy includes 96 KB of L1 per core, 512 KB of L2 per core, and 16 MB of shared L3 cache. Memory support is DDR4 on a dual-channel bus, with bandwidth rated at 46.9 GB/s. This memory bandwidth is significantly lower than the GPU's 912.4 GB/s, but for CPU-bound tasks in Rust, the 16 MB L3 cache is more relevant.

Benchmark data shows the Ryzen 5 2600 achieves a 75th percentile ranking among all CPUs, with an average benchmark score of 21484. Its nearest rivals include the Intel Core Ultra 5 228V (21440, 0.2% delta), Intel Core i9-11900H (21367, 0.5% delta), Intel Xeon D-1746TER (21635, -0.7% delta), and AMD EPYC 9454 (21223, 1.2% delta). The multi-threaded performance is solid for its generation, with Cinebench R15 multi-core scoring 1248 and Geekbench multi-core scoring 5648.

In Rust, the CPU's influence is most evident at 1080p. The fact that Low settings at 1080p only reach 131 FPS, while the GPU could theoretically render far more frames per second, reveals a CPU bottleneck. The single-thread performance, measured at 157.3 in Cinebench R15 single-core and 1154 in Geekbench single-core, limits how quickly game logic and physics can be processed. Rust's simulation-heavy gameplay relies heavily on CPU performance, and the Ryzen 5 2600's aging architecture struggles to keep pace with the RTX 3080 Ti's frame rendering capability.

The passmark physics score of 673 and integer math score of 44518 indicate moderate computational throughput. The 37 points in find prime numbers test and 22942 in floating point math show respectable but not exceptional processing power. These scores correlate with the observed FPS caps at lower resolutions, where the CPU cannot maintain frame delivery rates above approximately 131 FPS.

FAQ

Q: What is the maximum average FPS achieved by this combo in Rust?

A: The highest measured average FPS is 131, achieved at 1920x1080 with Low settings. This represents the ceiling for this pairing, likely limited by the CPU's frame delivery capability.

Q: How does the RTX 3080 Ti compare to its nearest rival, the RTX 5070?

A: The RTX 3080 Ti has an average benchmark score of 41187, which is 2% higher than the RTX 5070's score of 40377. This places the older card slightly ahead in overall GPU benchmark performance.

Q: What is the largest FPS drop when moving from 1080p to 4K?

A: At Ultra settings, the drop from 96 FPS at 1080p to 39 FPS at 4K represents a 59% reduction. This is the most severe resolution penalty observed across all settings presets.

Q: Does the Ryzen 5 2600 bottleneck the RTX 3080 Ti in Rust?

A: The data strongly suggests yes at lower resolutions. At 1080p Low, the 131 FPS result is far below what the RTX 3080 Ti is capable of, while at 4K the GPU becomes the limiting factor. The CPU's 3.90 GHz boost clock and older Zen architecture constrain frame rates at 1080p.

Q: What is the combo's rank among all tested configurations in Rust?

A: This pairing ranks 1448 out of 3723 total tested combos, placing it in the 61st percentile of all configurations tested in Rust.

Q: How much memory bandwidth does the RTX 3080 Ti provide compared to the CPU?

A: The GPU offers 912.4 GB/s of bandwidth from its 12 GB GDDR6X memory on a 384-bit bus, while the CPU has 46.9 GB/s from dual-channel DDR4. The GPU's bandwidth advantage is substantial, which matters for high-resolution textures.

How This Combo Ranks

The combo rank of 1448 out of 3723 tested combinations places this pairing in the top 39% of all configurations tested in Rust. This ranking reflects the imbalance between the older CPU and newer GPU. The RTX 3080 Ti's 83rd percentile GPU ranking and the Ryzen 5 2600's 75th percentile CPU ranking suggest that individually, both components perform above average, but their combination in Rust yields a mid-tier overall result.

The ranking is likely dragged down by the CPU bottleneck at lower resolutions. Many combos with more recent CPUs paired with mid-range GPUs may achieve higher overall scores in Rust because the game's simulation-heavy nature rewards CPU performance. The 1448 rank indicates that while this combo is capable, it falls short of top-tier configurations. The 3723 total combos tested provide context: this pairing sits comfortably in the upper half, but there is significant headroom for improvement with a more modern CPU.

Comparatively, the GPU's nearest rivals in the database — the RTX 5070, Radeon Pro 5300, and Tesla M40 variants — represent different market segments. The fact that the RTX 3080 Ti leads its closest competitor by 2% in average benchmark score suggests the GPU is not the weak link in this combination. Instead, the CPU's 75th percentile ranking, while respectable, limits the overall combo's potential in Rust.

Measured FPS Breakdown

The complete measured FPS data for this combo in Rust, organized by resolution and settings, is as follows:

1920x1080 (1080p):

• Low settings: 131 FPS average
• Medium settings: 113 FPS average (minimum 96, maximum 130)
• High settings: 106 FPS average
• Ultra settings: 96 FPS average

At 1080p, the progression from Low to Ultra shows a 27% performance penalty (131 to 96 FPS). The Medium settings data reveals a 34 FPS range between minimum and maximum, indicating frame time variability likely caused by CPU workload fluctuations.

2560x1440 (1440p):

• Low settings: 116 FPS average
• Medium settings: 99 FPS average (minimum 85, maximum 114)
• High settings: 87 FPS average
• Ultra settings: 66 FPS average

At 1440p, the penalty from Low to Ultra is 43% (116 to 66 FPS). The Medium settings range narrows to 29 FPS, suggesting more consistent GPU-bound performance. The 4K Ultra result of 39 FPS is the lowest across all configurations.

3840x2160 (4K):

• Low settings: 91 FPS average
• Medium settings: 61 FPS average (minimum 52, maximum 70)
• High settings: 52 FPS average
• Ultra settings: 39 FPS average

At 4K, the Low to Ultra penalty reaches 57% (91 to 39 FPS). The Medium settings range narrows further to 18 FPS, confirming that at this resolution the GPU is the dominant constraint. The 91 FPS at 4K Low is particularly notable — it shows that even with reduced graphical load, the GPU maintains high throughput, though still below the 1080p Low result of 131 FPS.

Across all resolutions, Low settings consistently provide the highest FPS, while Ultra settings provide the lowest. The gap between Low and Ultra widens with resolution: 35 FPS at 1080p, 50 FPS at 1440p, and 52 FPS at 4K. This widening gap indicates that at higher resolutions, the GPU's rendering workload becomes more significant relative to the CPU's simulation overhead. The Medium settings data, with its complete min/max values, offers the most reliable picture of real-world performance where frame pacing matters for gameplay smoothness.