Rust

The Intel Core i3-12100F paired with the AMD Radeon RX 9070 XT presents a fascinating study in bottleneck dynamics within Rust. The data reveals a system where the GPU’s immense raw power is progressively constrained by the CPU’s architectural limits as resolution drops. This combination ranks 441st out of 1717 tested combos, placing it in the top quarter of all configurations, yet the performance curve suggests a mismatch that becomes more pronounced at lower resolutions. The following analysis breaks down the measured results, focusing on where the frame rate ceiling truly lies.

Resolution Scaling — how FPS drops from 1080p to 4K and what it says about the limiting component

The measured FPS data shows a dramatic scaling pattern that clearly identifies the CPU as the primary bottleneck at lower resolutions. At 1080p Low settings, the system produces 201.5 FPS, but this drops to 156.2 FPS at 1440p and further to 88.4 FPS at 4K. The scaling from 1080p to 1440p represents a 22.5% performance reduction, while the jump from 1440p to 4K yields a 43.4% drop. This pattern is classic evidence of a CPU-limited scenario at 1080p, where the GPU has ample headroom but the processor cannot feed it enough data.

Looking at High settings, the story becomes more nuanced. At 1080p High, the system achieves 125.9 FPS, which drops to 85.9 FPS at 1440p and 52.2 FPS at 4K. The percentage drops here are more consistent, suggesting a better balance between CPU and GPU loads. The fact that 1080p High produces only 62.5% of the frames that 1080p Low does indicates that the game’s visual complexity at High settings begins to engage the GPU more substantially, even at lower resolutions.

The Ultra preset reveals the most GPU-bound behavior. At 1080p Ultra, the system manages 99.6 FPS, dropping to 67.4 FPS at 1440p and 37.3 FPS at 4K. The scaling from 1080p to 1440p at Ultra shows a 32.3% reduction, while the 1440p to 4K drop is 44.7%. This suggests that at Ultra settings, the RX 9070 XT’s rendering load becomes the dominant factor, yet the absolute numbers remain lower than what the GPU’s specifications would suggest.

The data implies that Rust’s engine, with its heavy simulation and entity processing, creates a CPU bottleneck that persists even at 4K Ultra. The i3-12100F’s 4 cores and 8 threads, running at a base clock of 3.30 GHz and boost of 4.30 GHz, appear to be the limiting factor in most scenarios. The GPU’s 16 GB of GDDR6 memory and 644.6 GB/s bandwidth are likely underutilized at lower resolutions where the CPU cannot maintain a sufficient frame rate.

GPU Role — VRAM, clocks, and how they relate to this game's results

The AMD Radeon RX 9070 XT brings substantial hardware to this pairing. Its 16 GB of GDDR6 memory on a 256-bit bus provides 644.6 GB/s of bandwidth, which should be more than sufficient for Rust’s texture-heavy environments. The GPU’s boost clock reaches 2970 MHz, with a game clock of 2400 MHz and base clock of 1660 MHz. The memory runs at 2518 MHz, translating to 20.1 Gbps effective, which is a critical factor for high-resolution texture streaming.

The GPU’s architectural strengths are evident in the 4K results. At 4K Low, the system achieves 88.4 FPS, which is surprisingly high for a CPU-limited configuration. This indicates that at 4K, the GPU’s 48.66 TFLOPS of FP32 performance and 128 ROPs are being pushed harder, yet the CPU still manages to keep frames flowing. The 4K Ultra result of 37.3 FPS shows the GPU’s limits when combined with the CPU’s constraints, as the rendering pipeline becomes the bottleneck.

The RX 9070 XT’s 4096 shading units and 256 TMUs suggest it should excel at the type of geometric and texture work Rust demands. However, the measured results show that at 1080p Medium, the system only produces 149.9 FPS, which is lower than what the GPU alone could achieve. This points to the CPU’s 12 MB of shared L3 cache and dual-channel memory support as potential limiting factors, as Rust’s procedural terrain generation and entity tracking require substantial memory bandwidth and cache capacity.

The GPU’s percentile ranking of 82 versus all GPUs, with an average benchmark score of 39647, confirms its high-end positioning. Yet in this specific game, the combo rank of 441 out of 1717 suggests that the CPU is holding it back significantly. The nearest rivals for the GPU, such as the AMD Radeon Pro 575 with a deltaPct of -0.1%, indicate that the RX 9070 XT’s raw compute is not the issue — the bottleneck lies elsewhere in the system.

How This Combo Ranks — use comboRankInGame vs other tested combos

This combination ranks 441st out of 1717 tested combos, placing it in the 74.3rd percentile of all configurations tested. This rank is notably lower than what the individual components’ benchmarks would suggest. The CPU’s percentile versus all CPUs is 72, while the GPU’s percentile versus all GPUs is 82, yet the combo rank indicates that this pairing underperforms relative to other combinations with similar component classifications.

The discrepancy between component rankings and combo ranking highlights Rust’s sensitivity to CPU performance. The i3-12100F has an average benchmark score of 13516, sitting just 0.1% below the AMD Ryzen Threadripper PRO 3975WX and 0.4% above the Intel Core i7-1250U. These close rival scores suggest that the i3-12100F is a solid mid-range performer, but its 4-core, 8-thread configuration may not be ideal for Rust’s multi-threaded server and simulation workloads.

The GPU’s nearest rivals provide additional context. The RX 9070 XT scores 0.2% above the NVIDIA RTX A500 Mobile and 0.5% below the AMD Radeon Pro 575X, with an average benchmark score of 39647. These rivals are all professional or mobile parts, which indicates that the RX 9070 XT’s performance class is well above what the i3-12100F can effectively utilize in Rust. The combo rank of 441 suggests that many other tested combinations achieve better frame rates, likely due to having more capable CPUs paired with mid-range GPUs.

The data implies that the combo rank would improve significantly if the CPU were upgraded to a higher-core-count processor. The fact that the system achieves 201.5 FPS at 1080p Low suggests that the GPU could support much higher frame rates if the CPU could keep up. The rank of 441 out of 1717, while still above average, leaves substantial performance on the table due to the CPU bottleneck.

Measured FPS Breakdown — resolution by resolution, settings by settings, exact numbers

At 1920x1080, the measured results show a wide range depending on settings. Low settings produce 201.5 FPS, Medium produces 149.9 FPS, High produces 125.9 FPS, and Ultra produces 99.6 FPS. The gap between Low and Medium is 51.6 FPS, while the gap between Medium and High is 24 FPS, and between High and Ultra is 26.3 FPS. This distribution suggests that Medium settings provide a significant visual improvement over Low while maintaining a high frame rate, but the diminishing returns become clearer as settings increase.

The 2560x1440 results show a similar pattern with lower absolute numbers. Low settings produce 156.2 FPS, Medium produces 102.9 FPS, High produces 85.9 FPS, and Ultra produces 67.4 FPS. The delta between Low and Medium is 53.3 FPS, between Medium and High is 17 FPS, and between High and Ultra is 18.5 FPS. At this resolution, the system still delivers playable frame rates even at Ultra, but the CPU bottleneck becomes more apparent in the smaller gaps between higher settings.

At 3840x2160, the results show the most significant performance degradation. Low settings produce 88.4 FPS, Medium produces 58.7 FPS, High produces 52.2 FPS, and Ultra produces 37.3 FPS. The gap between Low and Medium is 29.7 FPS, while the gap between Medium and High is only 6.5 FPS, and between High and Ultra is 14.9 FPS. The small gap between Medium and High at 4K suggests that the GPU is becoming the primary bottleneck at this resolution, as the CPU can no longer mask the differences in rendering load.

The data reveals that the 1080p Low result of 201.5 FPS is the only measurement that exceeds 200 FPS, while the 4K Ultra result of 37.3 FPS is the only measurement below 50 FPS. The system’s performance envelope spans from 37.3 FPS at the most demanding settings to 201.5 FPS at the least demanding, showing a 5.4x range in performance based on configuration choices.

Settings Recommendations — which preset gives the best experience per the measured rows

For 1080p displays, the Medium preset at 149.9 FPS offers the best balance of visual quality and raw performance. The jump from Low to Medium costs 51.6 FPS, but the visual improvement is substantial, while the drop from Medium to High costs only 24 FPS. For players with high refresh rate monitors, Low at 201.5 FPS provides the smoothest experience, but Medium’s 149.9 FPS remains well above the 144 Hz threshold for most displays.

At 1440p, the Medium preset at 102.9 FPS is the recommended choice for most users. This setting stays above 100 FPS, which is ideal for competitive play, while High at 85.9 FPS offers better visuals at the cost of 17 FPS. The Ultra preset at 67.4 FPS is still playable but may not be worth the visual trade-off for the performance loss. For players who prioritize frame rate above all else, Low at 156.2 FPS provides a significant advantage.

At 4K, the Low preset at 88.4 FPS is the only setting that delivers a consistently smooth experience. Medium at 58.7 FPS is playable but may show stutter in busy scenes, while High at 52.2 FPS and Ultra at 37.3 FPS fall below the ideal range for fast-paced gameplay. The data suggests that 4K gaming with this combo requires accepting lower settings to maintain acceptable performance.

The overall recommendation based on the measured rows is to use Medium settings at both 1080p and 1440p, as this provides the best combination of visual fidelity and frame rate. At 4K, Low settings are necessary to achieve smooth gameplay, and players should consider lowering resolution if they want higher visual quality.

FAQ — 4-6 Q&A pairs answerable from FACT PACK data

Q: What is the best frame rate this combo can achieve in Rust?

A: The highest measured frame rate is 201.5 FPS at 1920x1080 with Low settings. The lowest is 37.3 FPS at 3840x2160 with Ultra settings.

Q: How does the combo rank among all tested configurations?

A: This combination ranks 441st out of 1717 tested combos, placing it in the top quarter of all configurations tested in Rust.

Q: What is the GPU’s memory configuration?

A: The AMD Radeon RX 9070 XT features 16 GB of GDDR6 memory on a 256-bit bus, providing 644.6 GB/s of bandwidth with memory clocks at 2518 MHz.

Q: What are the CPU’s core and thread counts?

A: The Intel Core i3-12100F has 4 cores and 8 threads, with a base clock of 3.30 GHz and a boost clock of 4.30 GHz.

Q: What is the frame rate difference between 1080p and 4K at High settings?

A: At High settings, the system achieves 125.9 FPS at 1080p and 52.2 FPS at 4K, representing a 73.7 FPS drop when moving to 4K.

Q: What is the GPU’s average benchmark score?

A: The RX 9070 XT has an average benchmark score of 39647, with a percentile versus all GPUs of 82.

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

The Intel Core i3-12100F’s 4 cores and 8 threads are the defining characteristic of this combo’s performance in Rust. The CPU’s base clock of 3.30 GHz and boost clock of 4.30 GHz provide solid single-thread performance, as evidenced by its 3DMark single-thread score of 893 and Cinebench R23 single-core score of 1681. However, Rust’s simulation-heavy nature requires significant multi-threaded processing, and the CPU’s 3DMark 16-thread score of 4051 and 8-thread score of 4026 reveal that performance does not scale well beyond 8 threads.

The CPU’s cache hierarchy, with 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3 cache, plays a crucial role in Rust’s performance. The game’s procedural world generation and entity tracking benefit from large caches, but the 12 MB shared L3 is modest compared to higher-end processors. The CPU’s passmark multithread score of 14015 and physics score of 985 suggest that its computational throughput is adequate but not exceptional for this workload.

The CPU’s percentile versus all CPUs is 72, with an average benchmark score of 13516. Its nearest rival, the AMD Ryzen Threadripper PRO 3975WX, scores 0.1% higher with an average score of 13534, while the Intel Core i7-7700K scores 1.8% lower at 13280. These comparisons show that the i3-12100F is competitive with much more expensive processors in synthetic benchmarks, but Rust’s specific demands may not align perfectly with its architecture.

The measured FPS data shows that the CPU becomes the limiting factor at lower resolutions. At 1080p Low, the system achieves 201.5 FPS, which is close to the CPU’s maximum frame rate ceiling. The fact that 4K Low produces 88.4 FPS suggests that even at high resolution, the CPU’s processing of game logic and physics remains a significant contributor to overall performance. The CPU’s 10 nm process node and 58 W TDP indicate it is a power-efficient part, but this efficiency comes at the cost of raw multi-threaded performance that Rust appears to require.