Rust

# Rust Performance Analysis: AMD Ryzen 5 8400F + AMD Radeon RX 7600

The measured frame rates for this combination in Rust show a system that is firmly positioned for 1080p gaming, with playable results at 1440p under lower settings, while 4K pushes the GPU beyond its comfortable envelope. Across twelve tested configurations spanning four resolutions and four quality presets, the average frame rates range from 24 FPS at 4K Ultra to 138 FPS at 1080p Low, revealing a component pairing where the Radeon RX 7600 consistently becomes the primary constraint as resolution climbs. The Ryzen 5 8400F's six Zen 4 cores and 12 threads provide sufficient headroom at lower resolutions, but the GPU's 8 GB VRAM and 128-bit memory interface shape the experience more decisively at higher settings.

Settings Recommendations

For this specific hardware combination, the data clearly favors the Medium preset as the best overall experience across all three tested resolutions. At 1920x1080, Medium delivers 93 FPS average with a minimum of 79 FPS and maximum of 107 FPS, which represents a comfortable margin above the Low preset's 138 FPS but with substantially better visual quality. The jump from Low to Medium costs roughly 33% of the frame rate at 1080p (from 138 to 93 FPS), yet the visual fidelity improvement in Rust's environment rendering justifies this trade-off for most users.

At 2560x1440, Medium produces 64 FPS average with a minimum of 54 FPS and maximum of 73 FPS, which remains playable for a survival title where reaction times matter but competitive twitch response is less critical. This represents a 33% reduction from the Low preset's 95 FPS at the same resolution, but maintains a frame time consistency that avoids the sub-60 dips seen at High settings. The High preset at 1440p drops to 54 FPS average, which is borderline for smooth gameplay, while Ultra falls to 41 FPS — clearly too demanding for consistent play.

For 3840x2160, the situation is more constrained. Medium delivers 38 FPS average with a 32-43 FPS range, which is technically playable but lacks the smoothness most gamers expect. The Low preset at 4K reaches 56 FPS, making it the only 4K configuration that approaches acceptable playability. However, at this resolution, even Low settings strain the GPU, and users should consider whether 4K gaming on this hardware is worthwhile given the visual compromises required.

The Ultra preset is not recommended at any resolution with this pairing. At 1080p it produces 60 FPS, which is playable but represents a 35% performance penalty versus Medium for marginal visual gains. At 1440p, Ultra drops to 41 FPS, and at 4K it falls to 24 FPS — both below the threshold for smooth gameplay. The measured data suggests that Medium at 1080p or 1440p offers the optimal balance of visual quality and frame rate for this combination.

GPU Role

The AMD Radeon RX 7600, built on the RDNA 3.0 architecture with the Navi 33 chip, operates with a base clock of 1720 MHz, a game clock of 2250 MHz, and a boost clock of 2655 MHz. These clock speeds, combined with 2048 shading units and 64 ROPs, produce a pixel rate of 169.9 GPixel/s and a texture rate of 339.8 GTexel/s. The GPU's 8 GB of GDDR6 memory on a 128-bit bus provides 288.0 GB/s of bandwidth, which becomes a critical factor in Rust's open-world rendering with large texture streaming requirements.

The benchmark data shows the GPU's percentile rank at 57 among all tested GPUs, with an average benchmark score of 15171. Its nearest rival, the NVIDIA GeForce RTX 3050 OEM, scores 15199 (0.2% higher), while the AMD Radeon 680M integrated graphics scores 15270 (0.7% lower delta from this GPU). This places the RX 7600 in the mid-range tier, capable of solid 1080p performance but increasingly limited at higher resolutions.

The frame rate scaling across resolutions reveals the GPU's memory bandwidth constraint. From 1080p Medium (93 FPS) to 1440p Medium (64 FPS) represents a 31% drop, while 1440p to 4K Medium (38 FPS) shows a 41% further reduction. This accelerating decline points to the 8 GB VRAM capacity and 288.0 GB/s bandwidth becoming saturated as pixel count increases. At 4K Ultra, the 24 FPS result indicates the GPU is severely bandwidth-limited, unable to sustain the texture and geometry demands of Rust's highest settings.

FAQ

Q: What frame rate can I expect at 1080p with Medium settings in Rust?

A: The measured data shows 93 FPS average at 1920x1080 with Medium settings, with a minimum of 79 FPS and maximum of 107 FPS. This provides a smooth experience that remains above 60 FPS even during demanding scenes.

Q: Is this combination capable of 4K gaming in Rust?

A: Yes, but with significant compromises. At 4K Medium, the average is 38 FPS (32-43 FPS range), while 4K Low reaches 56 FPS. The 4K High preset drops to 32 FPS, and 4K Ultra falls to 24 FPS, making Ultra effectively unplayable for most users.

Q: How does the RX 7600 compare to its closest competitor in GPU benchmarks?

A: The RX 7600's average benchmark score is 15171, which is 0.2% lower than the NVIDIA GeForce RTX 3050 OEM (15199) and 0.7% higher than the AMD Radeon Pro 560X (15082). It also trails the AMD Radeon 680M by 0.7% (15270).

Q: What is the best resolution-to-settings ratio for this hardware?

A: The data indicates 1080p Medium (93 FPS) or 1440p Medium (64 FPS) as the optimal configurations. Both maintain playable frame rates while offering better visual quality than Low presets, without the significant performance penalties of High or Ultra.

Q: Why does performance drop so sharply from Medium to Ultra settings?

A: The Ultra preset at 1080p drops to 60 FPS, a 35% reduction from Medium's 93 FPS. At 1440p, Ultra produces 41 FPS versus Medium's 64 FPS (36% lower), and at 4K, Ultra's 24 FPS is 37% below Medium's 38 FPS. This consistent penalty suggests Ultra enables rendering features that disproportionately stress the GPU's 8 GB VRAM and 288.0 GB/s bandwidth.

Q: How does the Ryzen 5 8400F's CPU performance compare to its rivals?

A: The CPU's average benchmark score is 25005, placing it 0.2% above the AMD Ryzen 5 7500F (24964), 0.3% above the Intel Core i7-11850H (24935), and 0.4% above the Intel Core i7-13620H (24911). It trails the AMD EPYC 9474F by 0.4% (25103).

How This Combo Ranks

This specific CPU-GPU combination ranks 2596 out of 3723 tested combinations in Rust, placing it in the 30th percentile of all configurations evaluated. This ranking reflects the pairing of a mid-range CPU (77th percentile among all CPUs) with a mid-range GPU (57th percentile among all GPUs), resulting in a system that is better suited to 1080p gaming than higher resolutions.

The ranking is notably lower than the individual component percentiles might suggest, which indicates that Rust's engine is particularly demanding on the GPU's memory subsystem. The combination's position suggests that while the Ryzen 5 8400F provides adequate CPU performance (evidenced by its 20851 Cinebench R23 multicore score and 2943 single-core score), the RX 7600's 8 GB VRAM and 128-bit bus limit the overall system in this memory-intensive title.

When compared to other combinations in the database, this pairing sits in the lower-middle tier, meaning users will need to make peace with Medium settings at 1080p for a consistently smooth experience. The ranking also implies that upgrading either component would yield meaningful improvements: a stronger GPU would address the resolution scaling weaknesses, while a stronger CPU might help maintain minimum frame rates in Rust's CPU-heavy base-building and entity-tracking scenarios.

CPU Role

The AMD Ryzen 5 8400F, part of the 8000 series built on the Zen 4 architecture (Phoenix codename), provides 6 cores and 12 threads with a base clock of 4.20 GHz and a boost clock of 4.70 GHz. This 4 nm processor from TSMC features 16 MB of shared L3 cache and 1 MB of L2 cache per core, with 64 KB of L1 cache per core. Its 65 W TDP and dual-channel DDR5 memory support (83.2 GB/s bandwidth) make it a power-efficient choice for gaming systems.

In Rust specifically, the CPU's role is evident from the frame rate scaling at lower resolutions. At 1080p Low, the system achieves 138 FPS, which indicates the CPU can feed the GPU sufficiently at this resolution and settings level. The CPU's Cinebench R23 scores (20851 multicore, 2943 single-core) and 3DMark scores (6165 max threads, 951 single thread) suggest solid multi-threaded capability for Rust's simulation and physics workloads.

The Ryzen 5 8400F ranks in the 77th percentile among all CPUs with an average benchmark score of 25005. Its nearest rival, the AMD Ryzen 5 7500F, scores 24964 (0.2% lower), while the Intel Core i7-13620H scores 24911 (0.4% lower). This places the 8400F in a competitive position for gaming, though Rust's engine may not fully utilize all 12 threads given its legacy single-threaded elements.

The CPU's 4.70 GHz boost clock and 4.20 GHz base clock provide adequate single-thread performance for Rust's main game thread, while the 12 threads handle background tasks like asset loading and network synchronization. The measured FPS at 1080p Low (138 FPS) versus 1080p Medium (93 FPS) shows the CPU is not the primary bottleneck at lower settings, but the gap between Low and Medium (33% reduction) suggests the GPU becomes increasingly loaded as settings rise.

Measured FPS Breakdown

At 1920x1080, the full settings sweep shows the following averages: Low produces 138 FPS, Medium delivers 93 FPS (79-107 FPS range), High reaches 78 FPS, and Ultra drops to 60 FPS. The progression from Low to Ultra represents a 57% total performance reduction, with the largest single-step penalty occurring between Low and Medium (45 FPS or 33% reduction).

At 2560x1440, the measured averages are: Low at 95 FPS, Medium at 64 FPS (54-73 FPS range), High at 54 FPS, and Ultra at 41 FPS. The Low-to-Ultra span here is also 57%, but the absolute numbers are substantially lower than 1080p, with Medium being the only setting that maintains an average above 60 FPS.

At 3840x2160, the results are: Low at 56 FPS, Medium at 38 FPS (32-43 FPS range), High at 32 FPS, and Ultra at 24 FPS. None of these configurations reach 60 FPS average, and only Low approaches playability. The Medium preset's minimum of 32 FPS indicates significant frame time spikes during intensive scenes.

The Medium preset is the only configuration with recorded minimum and maximum values across all three resolutions, providing the most complete picture of frame consistency. At 1080p, the 79-107 FPS range shows a 28 FPS spread, while at 1440p the 54-73 FPS range has a 19 FPS spread, and at 4K the 32-43 FPS range narrows to 11 FPS. This narrowing range at higher resolutions suggests the GPU's frame pacing becomes more consistent as it becomes fully utilized, though at the cost of overall performance.

Resolution Scaling

The frame rate degradation from 1080p to 4K reveals the limiting component's identity. At Low settings, the progression is 138 FPS (1080p) → 95 FPS (1440p) → 56 FPS (4K), representing drops of 31% and 41% respectively for each resolution step. At Medium settings, the progression is 93 FPS → 64 FPS → 38 FPS, with drops of 31% and 41%. This consistent scaling pattern across settings indicates the GPU is the primary limiter, as CPU-bound scenarios would show minimal change when resolution increases.

The scaling from 1080p to 1440p at Medium (93 to 64 FPS, 31% drop) closely matches the pixel count increase of 78% (from 2.07 million to 3.69 million pixels), suggesting the GPU is operating near its memory bandwidth ceiling. The 1440p to 4K transition at Medium (64 to 38 FPS, 41% drop) shows a slightly larger penalty than the 2.25x pixel increase, indicating the 8 GB VRAM capacity is being exceeded at 4K, forcing texture swapping that exacerbates the bandwidth limitation.

This scaling behavior confirms that the RX 7600's 288.0 GB/s bandwidth and 8 GB memory are the binding constraints in Rust. The CPU's 6 cores and 12 threads at up to 4.70 GHz can maintain frame delivery at 1080p, as evidenced by the 138 FPS Low result, but cannot compensate for GPU limitations at higher resolutions. Users seeking 4K performance would need a GPU with greater memory bandwidth and capacity, while those targeting 1440p should expect to stay within Medium settings to maintain 60+ FPS averages.