Rust

The pairing of AMD’s Ryzen 5 4600G with the Radeon RX 7900 XT produces a peculiar set of results in Rust, a game known for its demanding simulation logic and heavy server-side calculations. The data reveals a system that is heavily constrained by the processor, even when equipped with one of the more powerful GPUs on the market. The benchmark results indicate that while the graphics card is capable of immense throughput, the 6-core/12-thread CPU becomes the limiting factor at lower resolutions, creating a scenario where performance scaling is uneven and often counterintuitive.

Resolution Scaling

The measured FPS data shows a clear and dramatic transition in system behavior as resolution increases. At 1920x1080 with Low settings, the combo achieves 155 FPS, which is the highest average recorded across the entire test suite. Moving up to 2560x1440 at Low settings drops the average to 137 FPS, a reduction of roughly 11.6%. At 3840x2160 with Low settings, the average falls further to 99 FPS. This progression from 1080p to 4K represents a 36% decrease in frame rate, which is substantial but not as severe as the drop seen at higher graphical presets.

Examining the High settings preset reveals a different scaling pattern. At 1080p High, the system produces 126 FPS. At 1440p High, it delivers 95 FPS, and at 4K High, it drops to 56 FPS. The jump from 1080p to 4K here is a 55.6% reduction in performance. This steeper decline at higher settings suggests that the GPU is beginning to take on more of the workload, but the CPU is still preventing the system from reaching its full potential. The gap between Low and High at 1080p is only 29 FPS (155 vs. 126), which is relatively small. This tight gap indicates that the CPU is the primary bottleneck at 1080p; the GPU has ample headroom, but the processor cannot feed it data fast enough to produce higher frame rates.

The most telling data point comes from the Ultra preset. At 1080p Ultra, the average FPS is 105. At 1440p Ultra, it falls to 72 FPS, and at 4K Ultra, it plummets to 42 FPS. The 4K Ultra result is the lowest recorded score in the entire dataset. The scaling from 1080p Ultra to 4K Ultra shows a 60% reduction in performance, the largest drop of any settings tier. This indicates that at Ultra settings, the game becomes significantly more demanding on the GPU, but the CPU's limitations are still visible. The 105 FPS at 1080p Ultra suggests that even when the GPU is stressed with higher graphical loads, the CPU cannot push the frame rate past the 100-155 FPS range observed at lower settings.

The data suggests that the limiting component changes depending on the resolution and settings. At 1080p, regardless of preset, the CPU is the clear bottleneck, as the FPS deltas between Low and Ultra are relatively modest. At 4K, the GPU becomes more of a limiting factor, evidenced by the larger FPS gaps between settings (e.g., 99 FPS at Low vs. 42 FPS at Ultra). However, the CPU still exerts influence, preventing the GPU from achieving the frame rates that a top-tier card would typically produce at lower resolutions.

GPU Role

The Radeon RX 7900 XT is a high-end graphics card with a substantial feature set that should theoretically excel in Rust. It features 20 GB of GDDR6 memory on a 320-bit bus, providing 800.0 GB/s of bandwidth. The card's architecture is RDNA 3.0, built on a 5 nm process, and it operates with a base clock of 1387 MHz, a game clock of 2025 MHz, and a boost clock of 2394 MHz. The GPU also includes 84 ray tracing cores and 5376 shading units, making it a formidable piece of silicon for modern titles.

Despite this hardware, the benchmark results show that the GPU is often underutilized. The highest FPS recorded is 155 at 1080p Low, which is a modest result for a card of this caliber. The data implies that the RX 7900 XT is not the limiting factor at 1080p, as its raw compute power is not being fully engaged. The 20 GB VRAM buffer is more than sufficient for Rust at any resolution, and the 800.0 GB/s bandwidth ensures that texture streaming and memory allocation are not bottlenecks.

The GPU's role becomes more apparent at higher resolutions. At 4K Ultra, the average FPS drops to 42, a figure that aligns with the card's expected performance envelope when pushed to its limits. The 4K Medium result of 66 FPS (with a minimum of 56 FPS and maximum of 76 FPS) shows the GPU handling a moderate load, but the frame time variance suggests instability that could be attributed to CPU stutters. The GPU's percentile ranking of 55 among all GPUs is interesting, placing it near the middle of the pack in the database, which seems low for this tier of hardware but is reflective of the specific benchmark suite's scoring.

The GPU's nearest rivals in the database include the AMD Radeon RX 9070 XT, which has an average score only 1.5% higher, and the AMD Radeon RX 570X, which scores 0.9% lower. This proximity in synthetic scores is misleading, as the RX 7900 XT's real-world gaming performance in Rust is clearly hampered by the CPU pairing. The data shows that the GPU is capable of producing high frame rates, but only when the CPU can keep up, which occurs only at 1080p Low (155 FPS). At 4K, the GPU is finally allowed to stretch its legs, but the results are still limited by the CPU's arithmetic logic unit performance.

How This Combo Ranks

In the grand scheme of tested combinations, this pairing of the Ryzen 5 4600G and RX 7900 XT ranks 1032 out of 3723 total combos tested in Rust. This places it in the 72nd percentile, meaning it outperforms roughly 72% of all other systems tested. While this sounds respectable at first glance, it is a disappointing result given the GPU's capabilities. The ranking is likely dragged down by the CPU's inability to provide high frame rates at lower resolutions, which is where many other combos with weaker GPUs but stronger CPUs may excel.

The combo's rank is heavily influenced by the CPU's overall performance percentile of 71 compared to all CPUs. The Ryzen 5 4600G, with its 6 cores and 12 threads based on Zen 2 architecture, is a mid-range processor from 2020. Its Cinebench R23 multi-core score of 13593 and single-core score of 1919 are solid but unremarkable by today's standards. In Rust, which is notoriously CPU-intensive for its simulation and entity handling, this processor struggles to maintain high frame rates, especially when there are many players or structures in the vicinity.

The ranking also reflects the mismatch between the CPU and GPU tiers. The RX 7900 XT is a top-tier card, while the 4600G is a budget-to-midrange part. This imbalance means that the system's overall performance in Rust is limited by the "weakest link," which is the CPU. The data shows that in a game like Rust, the processor's single-threaded performance and cache hierarchy are critical. The 4600G has 8 MB of shared L3 cache, which is relatively small compared to larger Ryzen parts. This can lead to performance drops in scenarios with large amounts of data being processed.

The nearest CPU rivals in the database, such as the AMD Ryzen 3 PRO 5355GE (0.1% higher score) and the Intel Core 7 150U (0.6% higher score), indicate that the 4600G is firmly in the mid-range segment. The combo's rank of 1032 suggests that while it is better than most, it is nowhere near the top echelon of performance, which would likely feature newer, higher-core-count processors paired with this same GPU.

FAQ

Q: Is the Ryzen 5 4600G a bottleneck for the RX 7900 XT in Rust?

A: Yes, the data strongly suggests this. At 1080p Low, the combo achieves 155 FPS, but at 1080p Ultra, it only drops to 105 FPS. This small delta of 50 FPS across the entire settings range indicates the CPU is limiting the GPU, as a GPU-bound system would show a much larger difference between Low and Ultra settings.

Q: What is the best resolution to play this game with this combo?

A: Based on the data, 2560x1440 offers the best balance. At 1440p High, the system produces 95 FPS, which is smooth. At 1440p Low, it hits 137 FPS. The 4K results are playable at Low (99 FPS) and Medium (66 FPS), but the Ultra preset at 4K falls to 42 FPS, which is below the threshold for competitive play.

Q: How does the CPU's multi-threaded performance compare to its rivals?

A: The Ryzen 5 4600G has a Cinebench R23 multi-core score of 13593. Its nearest rivals, the AMD Ryzen 3 PRO 5355GE and Intel Core 7 150U, have average benchmark scores that are within 0.6% of the 4600G, indicating they are all in the same performance tier for multi-threaded workloads.

Q: Does the GPU's 20 GB VRAM matter for Rust?

A: The data does not indicate that VRAM is a limiting factor at any of the tested settings. The RX 7900 XT has 20 GB of GDDR6 memory, which is more than enough for Rust's texture and asset requirements, even at 4K Ultra. The bottleneck is the CPU, not memory capacity.

Q: What is the performance difference between Low and Ultra at 4K?

A: At 3840x2160, the Low preset averages 99 FPS, while the Ultra preset averages 42 FPS. This represents a 57 FPS difference, or a 57.6% reduction in performance when moving from Low to Ultra settings.

Q: Is the system consistent in its frame delivery?

A: The data shows some variance. At 1080p Medium, the average is 133 FPS with a minimum of 113 and maximum of 153, showing a 40 FPS spread. At 4K Medium, the average is 66 FPS with a minimum of 56 and maximum of 76, a 20 FPS spread. This suggests occasional stutters, likely caused by CPU load spikes.

Measured FPS Breakdown

The complete dataset of measured FPS provides a detailed view of the system's behavior across all tested configurations. The following table summarizes the average frame rates for each setting and resolution combination:

• 3840x2160 (4K)
• High: 56 FPS
• Low: 99 FPS
• Medium: 66 FPS (min 56, max 76)
• Ultra: 42 FPS

• 2560x1440 (1440p)
• High: 95 FPS
• Low: 137 FPS
• Medium: 112 FPS (min 95, max 129)
• Ultra: 72 FPS

• 1920x1080 (1080p)
• High: 126 FPS
• Low: 155 FPS
• Medium: 133 FPS (min 113, max 153)
• Ultra: 105 FPS

Analyzing the data sequentially, the 1080p results show that the system can exceed 150 FPS only when the graphical load is minimized. The Low preset at 155 FPS is the peak performance, but this is not a sustainable target for typical gameplay. The Medium preset at 133 FPS is the most balanced for 1080p, offering a 22 FPS improvement over High while maintaining a playable frame rate. The Ultra preset at 105 FPS is still smooth but demonstrates how the CPU limits the GPU's potential.

At 1440p, the system still performs admirably. The Low preset at 137 FPS is close to the 1080p High result, showing that the GPU is handling the extra pixel count without issue. The High preset at 95 FPS is a solid gaming experience. The Medium preset at 112 FPS is the best choice for 1440p, providing a high refresh rate experience. The Ultra preset at 72 FPS is playable but shows a significant drop from Medium, indicating the GPU is now working harder.

At 4K, the system struggles to maintain high frame rates. The Low preset at 99 FPS is the only 4K option that exceeds 60 FPS comfortably. The Medium preset at 66 FPS is playable but shows a minimum of 56 FPS, which could dip below 60 FPS in intense scenes. The High preset at 56 FPS is borderline, and the Ultra preset at 42 FPS is not recommended for smooth gameplay. The 4K results clearly show that this CPU-GPU combo is not optimized for 4K gaming, as the CPU becomes a serious limitation even at higher graphical loads.

CPU Role

The AMD Ryzen 5 4600G is a 6-core, 12-thread processor based on the Zen 2 architecture, specifically the Renoir codename. It operates with a base clock of 3.70 GHz and a boost clock of 4.20 GHz. The CPU has a TDP of 65 watts and supports DDR4 memory. In Rust, the CPU's role is paramount due to the game's simulation mechanics, which rely heavily on single-threaded performance for physics, entity updates, and server logic.

The benchmark data shows that the CPU is the dominant bottleneck in this system. At 1080p Low, the FPS is 155, which is the maximum the CPU can deliver. Comparing this to the GPU's capabilities, the RX 7900 XT can theoretically produce much higher frame rates in less CPU-intensive games, but Rust's engine limits the output. The 4600G's single-core performance, as measured by Cinebench R23 at 1919 points, is a key indicator. This score is moderate, and in a game like Rust, where a single core often handles the critical game loop, this limits the overall frame rate.

The CPU's 8 MB of shared L3 cache is another factor. Rust often has large amounts of data to process, including world state and player inventories. A larger cache can help reduce memory latency, but the 4600G's modest cache size may lead to more frequent access to main memory, which can cause hitches and frame time spikes. The 3DMark scores for the CPU, such as 4889 for max threads and 726 for single-thread, provide a comparative view. The single-thread score of 726 is particularly relevant, as it directly correlates with the game's ability to process the main logic thread.

The CPU's overall percentile of 71 places it in the upper-middle range of all processors. Its nearest rivals in the database, such as the AMD Ryzen 3 PRO 5355GE and Intel Core i3-14100T, show that it is competitive with other mid-range parts. However, for a game like Rust, a stronger CPU with higher single-thread performance and more cache, such as a newer Ryzen 5 or Ryzen 7, would yield significantly better frame rates. The data clearly indicates that the 4600G is the limiting factor in this combination, preventing the RX 7900 XT from achieving its full potential in Rust.