Rust

The AMD Ryzen 5 4600G paired with the AMD Radeon RX 7900 XTX is a profoundly unbalanced combination for Rust, ranking in the 24th percentile of tested configurations. The data indicates that the 6-core, 12-thread CPU is the definitive bottleneck, severely capping the flagship GPU's potential. While the RX 7900 XTX delivers its expected high-end frame rates at 4K, the combo's overall rank of 892 out of 3723 reveals that the processor prevents the system from achieving the top-tier performance the graphics card is capable of. This pairing demonstrates that in Rust, a 71st-percentile CPU can drag down a 64th-percentile GPU into a lower overall standing than either component's individual metrics suggest.

How This Combo Ranks

The combination of the Ryzen 5 4600G and the Radeon RX 7900 XTX registers a comboRankInGame of 892 out of 3,723 tested configurations. This places the system in the top 24% of all tested combos, which is respectable but far from the elite tier that the GPU's specifications would imply. The data shows that this ranking is a result of the CPU's inability to feed the GPU efficiently at lower resolutions, creating a significant performance ceiling.

Benchmark results indicate that the CPU is the limiting factor in this pairing. The Ryzen 5 4600G's avgBenchmarkScore is 17,507, putting it in the 71st percentile of all CPUs. Its nearest rivals, such as the AMD Ryzen 3 PRO 5355GE (deltaPct 0.1), the Intel Core 7 150U (deltaPct 0.6), and the AMD Ryzen 3 8300GE (deltaPct -0.6), are all within a single percentage point of its performance. This positions the 4600G as a mid-tier processor, one that is completely outclassed by the GPU it is paired with.

Conversely, the RX 7900 XTX has an avgBenchmarkScore of 19,410, placing it in the 64th percentile of all GPUs. Its nearest rivals include the NVIDIA GeForce GTX 1060 3 GB (deltaPct 0.4) and the NVIDIA TITAN Xp (deltaPct 1.2), which confirms the GPU's raw compute power. However, the GPU's percentile ranking is dragged down by the CPU bottleneck; in a game like Rust, which is heavily dependent on single-thread performance, the 4600G's 3dmark_single_thread score of 726 and passmark_single_thread score of 2,653 are insufficient to keep the RX 7900 XTX fully utilized. The result is a system that ranks lower than the sum of its parts, highlighting a stark mismatch in capability.

GPU Role

The AMD Radeon RX 7900 XTX is the undisputed performance driver in this configuration, bringing immense memory bandwidth and compute resources to the table. It features 24 GB of GDDR6 memory on a 384-bit bus, yielding a staggering memory bandwidth of 960.0 GB/s. This is crucial for Rust, which is known for its large, persistent world and heavy texture streaming. The GPU's clock speeds are equally impressive, with a base clock of 1,929 MHz, a game clock of 2,365 MHz, and a boost clock of 2,498 MHz. These clocks, combined with 6,144 shading units, 384 TMUs, and 192 ROPs, allow the card to process geometry and pixel data at rates that far exceed what the CPU can issue.

The data shows that the GPU's role is primarily realized at higher resolutions where the rendering load is more substantial. At 4K Ultra, the card produces an average of 46 FPS, while at 4K Low it jumps to 107 FPS. This scaling indicates that the GPU is the bottleneck at 4K Ultra, as the massive pixel count overwhelms the shading units. However, at 1080p, the GPU's performance is artificially constrained. The fp32 compute of 61.39 TFLOPS and pixel rate of 479.6 GPixel/s are theoretical maxima that the CPU cannot feed in this scenario.

The GPU's passmark_g3d score of 31,238 reinforces its high-end status, but its percentileVsAllGpus of 64 is lower than expected for a flagship card. This is likely due to the fact that the benchmark suite includes tests that are not GPU-bound, where the CPU's limitations drag down the overall average. In practice, the RX 7900 XTX is capable of delivering 155 FPS at 1080p Low, but the system cannot maintain that pace at higher settings due to the CPU's inability to handle game logic and draw calls efficiently.

Resolution Scaling

The frame rate scaling across resolutions reveals a classic CPU-bottleneck signature. As resolution increases, the FPS drops are relatively modest, indicating that the GPU is still not the primary limiting factor until the pixel count becomes extreme. Moving from 1080p to 1440p, the High settings average drops from 126 FPS to 102 FPS, a decrease of 19%. The drop from 1440p to 4K at High settings is more pronounced, falling from 102 FPS to 60 FPS, a 41% reduction. This steeper decline at 4K suggests that the GPU is finally beginning to hit its limits, but the absolute frame rates are still lower than what the GPU alone should achieve.

The data for Low settings shows a similar pattern. At 1080p Low, the combo hits 155 FPS. At 1440p Low, it drops to 137 FPS, a mere 11.6% decrease. The 4K Low figure of 107 FPS represents a 22% drop from 1440p. These relatively small percentage decreases at lower settings indicate that the CPU is the bottleneck; if the GPU were the limiter, the FPS would scale much more aggressively with resolution changes. The fact that the 4600G can only push 155 FPS at 1080p Low, even with a GPU capable of far more, confirms this analysis.

At Ultra settings, the scaling is more erratic. The gap between 1080p Ultra (113 FPS) and 1440p Ultra (78 FPS) is a 31% decrease, while the jump to 4K Ultra (46 FPS) is another 41% decrease. This suggests that at Ultra settings, the game's more complex rendering features (shadows, reflections, etc.) start to engage the GPU more heavily, allowing it to become a co-limiter alongside the CPU. The 1080p Ultra score of 113 FPS is actually higher than the 1080p High score of 126 FPS? No, it is lower (113 vs 126), indicating that the GPU is being taxed more by the Ultra preset, but the CPU is still preventing the system from reaching its full potential.

Measured FPS Breakdown

The measured FPS data provides a granular view of the combo's performance across all settings and resolutions.

At 1920x1080, the combo achieves its highest frame rates. With Low settings, the average FPS is 155. Moving to Medium settings, the average drops to 133 FPS, with a minimum of 113 FPS and a maximum of 153 FPS. High settings yield an average of 126 FPS. Ultra settings produce an average of 113 FPS. The spread between Low and Ultra is only 42 FPS, which is narrow for a GPU of this caliber, further evidence of the CPU limit.

At 2560x1440, the performance scales down proportionally. Low settings average 137 FPS. Medium settings average 118 FPS, with a minimum of 100 FPS and a maximum of 136 FPS. High settings average 102 FPS. Ultra settings average 78 FPS. The gap between Low and Ultra here is 59 FPS, showing that the GPU is beginning to contribute more to the performance delta.

At 3840x2160, the GPU finally takes over as the primary bottleneck. Low settings average 107 FPS. Medium settings average 72 FPS, with a minimum of 61 FPS and a maximum of 82 FPS. High settings average 60 FPS. Ultra settings average 46 FPS. The Low-to-Ultra delta is 61 FPS, but the absolute values are now more in line with what a high-end GPU would produce, albeit still capped by the CPU's inability to sustain higher frame rates.

The data shows that the CPU bottleneck is most severe at 1080p, where the GPU is essentially idle for significant portions of the frame time. The fact that the 1080p Ultra average (113 FPS) is nearly identical to the 1440p Low average (137 FPS) is a clear indicator that the system's performance is not scaling with GPU load but rather with CPU headroom.

CPU Role

The AMD Ryzen 5 4600G plays a limiting role in this configuration, acting as a significant drag on the system's overall performance in Rust. This processor features 6 cores and 12 threads based on the Zen 2 architecture (codenamed Renoir) on a 7 nm process. Its base clock is 3.70 GHz with a boost clock of 4.20 GHz. While these specifications are adequate for mainstream productivity, they are insufficient for feeding a flagship GPU in a CPU-intensive game like Rust.

The CPU's benchmark scores illustrate its mid-range positioning. In cinebench_r23_multicore, it scores 13,593, and in cinebench_r20_multicore, it scores 5,709. These are respectable numbers, but the single-thread performance is what matters most for Rust. The cinebench_r23_singlecore score of 1,919 and the 3dmark_single_thread score of 726 are modest. The passmark_single_thread score of 2,653 places it in the lower half of modern processors. Rust's game engine is notoriously single-threaded, meaning that this CPU's performance in that metric directly limits the maximum FPS achievable.

The CPU's memory bandwidth of 51.2 GB/s (dual-channel DDR4) is another bottleneck. The RX 7900 XTX has a memory bandwidth of 960.0 GB/s, which is nearly 19 times higher. While these two bandwidths are not directly comparable (system memory vs. VRAM), the CPU's inability to quickly move data from system memory to the GPU can cause stalls. The CPU's 8 MB of shared L3 cache is also limited, which can lead to cache misses in a game with a large, dynamic world like Rust.

The benchmark data shows that the 4600G is closely matched with its nearest rivals. It is 0.1% faster than the AMD Ryzen 3 PRO 5355GE, 0.6% faster than the Intel Core 7 150U, and 0.8% slower than the Intel Core i3-14100T. This places it firmly in the entry-level to mid-range tier. The avgBenchmarkScore of 17,507 is only slightly higher than the Ryzen 3 PRO 5355GE's score of 17,482, confirming that the 4600G is not a high-performance part. In this pairing, the CPU is the clear weak link, preventing the system from achieving the frame rates that the GPU could otherwise deliver.

FAQ

Q: Why is the comboRankInGame only 892 out of 3723 despite having a flagship GPU?

A: The comboRankInGame of 892 out of 3,723 reflects the system's overall performance, which is heavily influenced by the CPU. The AMD Ryzen 5 4600G has a percentileVsAllCpus of 71, but its single-thread performance (e.g., 3dmark_single_thread score of 726) is insufficient to fully utilize the RX 7900 XTX in Rust, which is a CPU-intensive title.

Q: What is the GPU's performance percentile, and does it match its rank in this combo?

A: The GPU has a percentileVsAllGpus of 64 and an avgBenchmarkScore of 19,410. Its nearest rival, the NVIDIA TITAN Xp, is within 1.2% of its score. However, the GPU's potential is not realized in this combo due to the CPU bottleneck, so its contribution to the system's rank is diminished.

Q: Is the system more CPU-bound or GPU-bound at 1080p?

A: The data shows the system is heavily CPU-bound at 1080p. At 1080p Low, the average FPS is 155, and at 1080p Ultra, it is 113 FPS. The narrow spread of 42 FPS across settings indicates that the CPU cannot issue draw calls fast enough to increase the frame rate, even when the GPU load is reduced.

Q: What are the best and worst frame rates recorded for this combo?

A: The highest average FPS is 155 at 1080p Low. The lowest average FPS is 46 at 4K Ultra. The data also shows a minimum FPS of 61 at 4K Medium and a maximum FPS of 153 at 1080p Medium.

Q: Does the CPU's multi-threaded performance help in Rust?

A: While the CPU's multi-threaded scores are decent (e.g., cinebench_r23_multicore of 13,593), they are not the primary driver in Rust. The game relies heavily on single-thread performance, where the 4600G scores 1,919 in cinebench_r23_singlecore. This single-thread capability is the limiting factor, not the multicore throughput.

Q: How does the CPU compare to its nearest rivals in terms of average benchmark score?

A: The Ryzen 5 4600G has an avgBenchmarkScore of 17,507. It is 0.1% faster than the AMD Ryzen 3 PRO 5355GE (score 17,482), 0.6% faster than the Intel Core 7 150U (score 17,395), and 0.8% slower than the Intel Core i3-14100T (score 17,648). This shows it is a mid-range processor, which is insufficient for the RX 7900 XTX.