Rust

# Resolution Scaling

Rust demonstrates a pronounced sensitivity to resolution changes with this AMD Ryzen 5 7400F + AMD Radeon RX 7700 combination, and the scaling pattern reveals where the bottleneck shifts as pixel count rises. At 1920x1080 with Low settings, the system delivers 173 FPS average, which drops to 119 FPS at 2560x1440 and further to 70 FPS at 3840x2160. That represents a 31% reduction from 1080p to 1440p, and a 41% reduction from 1440p to 4K — a scaling curve that indicates the GPU becomes progressively more dominant as resolution increases.

The High settings preset tells a similar story but with lower absolute values: 98 FPS at 1080p, 67 FPS at 1440p, and 40 FPS at 4K. The percentage drops are nearly identical to Low settings (32% and 40% respectively), which suggests the resolution scaling behavior is consistent regardless of the graphical workload. This consistency implies that the rendering pipeline in Rust is scaling predictably with pixel count rather than hitting unexpected architectural limits.

Medium settings offer the most complete data set with minimum and maximum FPS values recorded. At 1080p Medium, the average is 116 FPS with a range of 99 to 133 FPS. Moving to 1440p Medium drops the average to 80 FPS (31% less) with a range of 68 to 92 FPS. At 4K Medium, the average falls to 47 FPS (41% less than 1440p) with a range of 40 to 54 FPS. The consistent percentage deltas across all three presets strongly suggest that Rust's engine scales resolution uniformly — there are no sudden cliff effects or unexpected plateaus.

Ultra settings present the steepest curve: 75 FPS at 1080p, 51 FPS at 1440p, and just 30 FPS at 4K. The drop from 1440p to 4K is 41%, which matches the pattern seen elsewhere. However, the absolute values at Ultra are already marginal at 1080p, and 4K Ultra at 30 FPS average is at the edge of playability. This indicates that for this hardware combination, Ultra settings push the GPU hard enough that even the lower-resolution scenarios become GPU-bound rather than CPU-bound.

The limiting component shift is evident when comparing Low settings across resolutions. At 1080p Low, the 173 FPS result suggests the CPU is doing most of the heavy lifting — the GPU has relatively little work with minimal effects and textures. But by 4K Low, the 70 FPS result shows the GPU's fill rate and memory bandwidth becoming the primary constraint. The Ryzen 5 7400F's six cores and twelve threads, running at a 3.70 GHz base and 4.70 GHz boost clock, appear sufficient to feed the GPU at lower resolutions, but the RX 7700's raw pixel throughput becomes the limiting factor as resolution climbs.

# GPU Role

The AMD Radeon RX 7700 brings substantial memory resources to Rust, featuring 16 GB of GDDR6 memory on a 256-bit bus with 624.1 GB/s of bandwidth. This memory configuration is particularly relevant for Rust's large, persistent world where geometry and texture data accumulate as players build and modify the environment. The 16 GB capacity means the GPU is unlikely to run out of memory even at 4K Ultra, where the 30 FPS result is more likely tied to compute throughput than memory exhaustion.

Clock speeds on this GPU are notable: a 1900 MHz base clock, 2041 MHz game clock, and 2459 MHz boost clock. The memory runs at 2438 MHz with 19.5 Gbps effective speed. These clocks, combined with the 2560 shading units and 96 ROPs, deliver a 236.1 GPixel/s pixel rate and 393.4 GTexel/s texture rate. For Rust, which relies heavily on texture sampling for its terrain and building materials, the texture rate appears to be a meaningful contributor to the measured FPS.

The GPU's FP32 performance of 25.18 TFLOPS and FP16 at the same rate (1:1) suggests balanced compute capability. Rust's rendering does not appear to be compute-bound in the traditional sense — the scaling from Low to Ultra at a given resolution is roughly linear in terms of FPS cost, with Ultra costing roughly half the FPS of Low at each resolution (173 to 75 at 1080p, 119 to 51 at 1440p, 70 to 30 at 4K). This consistent halving suggests the GPU is working proportionally harder as settings increase.

The RX 7700's percentile ranking of 58 among all GPUs places it slightly above the midpoint, and its nearest rivals include the AMD Radeon R9 370X (0.1% slower in average benchmark score), AMD Radeon RX 9060 (1% faster), AMD Radeon Pro W5500 (1.1% slower), and NVIDIA GeForce RTX 3060 Ti (1.7% faster). These tight deltas indicate the RX 7700 sits in a competitive performance band, and the measured Rust FPS reflects that positioning — capable but not class-leading.

The GPU's 200 W TDP and dual-slot cooler design with dual 8-pin power connectors indicate it is a mid-range power draw card. The PCIe 4.0 x16 interface provides adequate bandwidth for the 16 GB frame buffer. The display outputs include 1x HDMI 2.1a and 2x DisplayPort 2.1, which supports the 4K testing scenario.

# FAQ

Q: Does the RX 7700's 16 GB VRAM benefit Rust at 4K?

A: Yes, the 16 GB GDDR6 memory with 624.1 GB/s bandwidth allows the GPU to handle 4K textures without memory swapping. The 4K Medium result of 47 FPS average with a minimum of 40 FPS suggests memory capacity is not a limiting factor, as the performance degradation from 1440p to 4K follows the same percentage pattern as lower VRAM scenarios.

Q: Why does 1080p Low hit 173 FPS but 4K Low only reaches 70 FPS?

A: At 1080p Low, the Radeon RX 7700 has minimal work per frame, so the Ryzen 5 7400F's six cores can feed it faster than it can render. At 4K Low, the GPU's pixel throughput becomes the bottleneck — the 236.1 GPixel/s pixel rate is insufficient to maintain high frame rates at 8.3 million pixels per frame.

Q: Is the Ryzen 5 7400F holding back the GPU in Rust?

A: At 1080p with Low settings, the 173 FPS result suggests the CPU is near its limit, but the GPU is still the primary constraint at higher resolutions. The 4.70 GHz boost clock and 32 MB shared L3 cache provide sufficient IPC for Rust's simulation logic, as evidenced by the consistent 31-32% drop from 1080p to 1440p across all settings.

Q: How does the RX 7700 compare to the RTX 3060 Ti in Rust?

A: The RX 7700 has an average benchmark score of 15852, which is 1.7% lower than the RTX 3060 Ti's 16129. In Rust, this translates to a small performance gap — the RX 7700's 1080p High result of 98 FPS would likely be a few frames higher on the RTX 3060 Ti based on the benchmark delta.

Q: What explains the 30 FPS result at 4K Ultra?

A: The 4K Ultra preset combines maximum resolution with maximum graphical effects, and the RX 7700's compute resources are overwhelmed. The 25.18 TFLOPS FP32 performance and 96 ROPs are insufficient for the combination of high-resolution rendering and Ultra-level effects, resulting in an average below the 40 FPS minimum seen at 4K Medium.

Q: Is Rust more CPU-bound or GPU-bound for this combo?

A: The data shows a shift: at 1080p Low the system achieves 173 FPS, indicating CPU limitations may be approached, but the GPU becomes the clear bottleneck as resolution and settings increase. The 41% drop from 1440p to 4K across all settings confirms GPU dominance at higher resolutions.

# Measured FPS Breakdown

At 1920x1080, the lowest resolution tested, the system shows its strongest performance. Low settings produce an average of 173 FPS, which is the highest measured value across all configurations. Medium settings reduce this to 116 FPS average with a range of 99 to 133 FPS — the only preset at this resolution with recorded minimum and maximum values. High settings deliver 98 FPS average, and Ultra settings drop to 75 FPS average. The spread from Low to Ultra is 98 FPS, indicating a wide performance envelope based on graphical fidelity.

Moving to 2560x1440, the performance scales down predictably. Low settings yield 119 FPS average, which remains highly playable for competitive scenarios. Medium settings produce 80 FPS average with a range of 68 to 92 FPS, providing smooth gameplay with moderate visual improvements. High settings deliver 67 FPS average, which is at the threshold where some players may notice reduced smoothness. Ultra settings drop to 51 FPS average, which is still technically playable but approaches the lower bounds of acceptable frame rates for fast-paced action.

At 3840x2160, the highest resolution tested, performance becomes marginal for demanding presets. Low settings produce 70 FPS average, which is surprising given the 4K resolution — this suggests Rust's Low preset removes enough GPU workload to maintain reasonable performance. Medium settings deliver 47 FPS average with a range of 40 to 54 FPS, which is playable but with visible frame time variance. High settings drop to 40 FPS average, and Ultra settings fall to 30 FPS average — both results indicate the GPU is the limiting factor at 4K with higher presets.

The Medium preset is the only one with complete min/max data across all three resolutions. At 1080p, the 99 to 133 FPS range shows a 34 FPS variance; at 1440p, the 68 to 92 FPS range shows a 24 FPS variance; at 4K, the 40 to 54 FPS range shows a 14 FPS variance. This narrowing variance as resolution increases further confirms the GPU bottleneck — at lower resolutions, CPU-related frame time spikes create wider variance, while at higher resolutions the GPU's consistent workload smooths out frame delivery.

# Settings Recommendations

Based on the measured data, the Medium preset at 2560x1440 offers the best balance of performance and visual fidelity for most users. The 80 FPS average with a minimum of 68 FPS ensures smooth gameplay in Rust's survival and combat scenarios, while the 68 to 92 FPS range indicates acceptable frame pacing. This configuration provides 70% more performance than High settings at the same resolution (80 vs 67 FPS) while still maintaining a reasonable visual quality tier.

For users prioritizing maximum frame rates, the Low preset at 1920x1080 delivers 173 FPS average, which is well above the refresh rate of most monitors. This configuration is suitable for competitive play where frame rate matters more than visual detail. The 1440p Low result of 119 FPS is also compelling, offering a 46% improvement over 1440p Medium while still maintaining high resolution.

At 4K, the data suggests that Low settings are the only viable option for smooth gameplay, with 70 FPS average. The 4K Medium result of 47 FPS is borderline — the 40 FPS minimum could result in noticeable stutters during intense scenes. The 4K High and Ultra results of 40 FPS and 30 FPS respectively are below the threshold for comfortable play, making them unsuitable for most users despite the visual benefits.

The High preset at 1080p (98 FPS) and 1440p (67 FPS) occupies a middle ground. At 1080p, it provides a good balance for users who want improved visuals without sacrificing frame rate. At 1440p, the 67 FPS average is acceptable for casual play but may be too low for competitive scenarios. The Ultra preset is only recommended at 1080p (75 FPS), where it still maintains playable frame rates, though the 51 FPS result at 1440p Ultra is marginal.

# CPU Role

The AMD Ryzen 5 7400F brings six cores and twelve threads to the system, built on the Zen 4 architecture with a 5 nm process. The 3.70 GHz base clock and 4.70 GHz boost clock provide substantial single-thread performance, which is critical for Rust's game simulation and physics calculations. The 32 MB shared L3 cache and 1 MB L2 cache per core help reduce memory latency, which is beneficial for the frequent data access patterns in a game world that changes constantly.

The CPU's benchmark scores place it in the 83rd percentile among all CPUs, with an average benchmark score of 32750. Its nearest rivals include the Intel Core i5-14600T (0.1% slower), Intel Core Ultra 7 155H (0.2% slower), AMD Ryzen 7 PRO 6850H (0.2% faster), and AMD Ryzen AI 7 PRO 360 (0.3% slower). These tight deltas indicate the 7400F is well-positioned in the mainstream performance segment, but it is not a high-end part.

In Rust, the CPU's role is most evident at lower resolutions and settings. At 1080p Low, the 173 FPS result suggests the CPU is approaching its limit — the GPU has minimal work, so the frame rate is constrained by how quickly the CPU can process the game's logic and submit draw calls. The 4.70 GHz boost clock helps here, as Rust's single-threaded components benefit from high clock speeds. The 12 threads allow background tasks and additional simulation threads to run concurrently without starving the primary rendering thread.

The Cinebench R23 scores provide context: 21765 multicore and 3072 singlecore. The singlecore score is particularly relevant for Rust, where game logic often runs on one or two threads. The Passmark multithread score of 25645 and single-thread score of 3689 further confirm balanced performance. The CPU's memory bandwidth of 83.2 GB/s via dual-channel DDR5 is adequate for feeding the GPU, as evidenced by the performance scaling patterns observed.

At higher resolutions, the CPU's influence diminishes. The consistent 41% drop from 1440p to 4K across all settings indicates the GPU becomes the bottleneck regardless of CPU capability. However, the CPU still matters for maintaining minimum frame rates — the 40 FPS minimum at 4K Medium suggests the CPU can keep up with the GPU's output, preventing additional frame drops beyond what the GPU renders.

# How This Combo Ranks

This specific combination of AMD Ryzen 5 7400F and AMD Radeon RX 7700 ranks 1295 out of 2953 tested combos in Rust, placing it in the 56th percentile of all configurations evaluated. This ranking reflects a mid-pack position that aligns with the individual component rankings — the CPU's 83rd percentile and GPU's 58th percentile suggest the combo is slightly held back by the GPU relative to the CPU's capability.

The ranking is influenced by the GPU's average benchmark score of 15852, which is 1.7% lower than the RTX 3060 Ti. The CPU's average score of 32750 is competitive with its nearest rivals, all within 0.3% of each other. This combination of a strong CPU with a mid-range GPU results in a system that excels at lower resolutions and settings but struggles at higher resolutions and presets.

Compared to the 2953 total combos tested, the 1295 rank means 1658 combos perform worse in Rust and 1294 perform better. This places the combo in the upper-middle range of all tested configurations. The ranking is likely boosted by the CPU's strong single-thread performance (3072 in Cinebench R23 singlecore), which helps Rust's simulation-heavy gameplay, while the GPU's modest performance at 4K limits the overall score.

The combo's performance profile shows a system that is well-balanced for 1080p and 1440p gaming, with the 1080p High result of 98 FPS and 1440p Medium result of 80 FPS representing the sweet spot. The 4K results, ranging from 70 FPS at Low to 30 FPS at Ultra, indicate that this combo is not designed for high-resolution gaming with maximum settings. Users seeking 4K Ultra performance would need to look at higher-tier GPUs, as the RX 7700's 58th percentile ranking among all GPUs suggests it is positioned for mainstream rather than enthusiast use cases.