Rust

The AMD Ryzen 9 9900X and AMD Radeon RX 580 combination ranks 3,397th out of 3,723 tested combos in Rust, placing it in the bottom 9% of all configurations. This is a pairing of a top-tier 2024 CPU with a 2017 entry-level GPU, and the benchmark data reflects that imbalance clearly. The CPU sits in the 92nd percentile among all processors, while the GPU ranks in only the 53rd percentile, creating a system where the graphics card is the definitive bottleneck in nearly every scenario measured.

How This Combo Ranks

The combo rank of 3,397 out of 3,723 is a poor result, but it is not a reflection of the CPU's capability. The Ryzen 9 9900X is a 12-core, 24-thread processor based on Zen 5 architecture, built on TSMC's 4 nm process. Its average benchmark score of 57,498 places it just 0.1% behind the AMD EPYC 9015 and 0.2% ahead of the AMD EPYC 7313, with the Intel Core i9-14900 sitting 1.1% higher and the Intel Xeon Platinum 8260M 1.4% higher. In synthetic tests, this CPU demonstrates exceptional multi-threaded performance, scoring 32,172 in Cinebench R23 multi-core and 22,174 in Geekbench multi-core.

The RX 580, by contrast, is a Polaris 20 chip with 2,304 shading units, 144 texture mapping units, and 32 raster operation pipelines. Its average benchmark score of 12,928 puts it 0.1% behind the NVIDIA GeForce RTX 3050 Ti Mobile and 0.4% behind the GTX 1660 SUPER, while running 0.5% ahead of the AMD Radeon 740M. The GPU's 53rd percentile ranking among all graphics cards is middling at best, and in Rust specifically, the measured frame rates show that this GPU cannot push high resolutions or settings regardless of the CPU's headroom.

The data suggests this combo is severely GPU-limited. The CPU's 92nd percentile standing means it is capable of feeding a much faster graphics card, but the RX 580's 8 GB of GDDR5 memory and 256.0 GB/s bandwidth are simply not enough to maintain playable frame rates at higher settings.

Settings Recommendations

Based on the measured FPS data, the Low preset is the only setting that delivers consistently playable frame rates across all resolutions. At 1920x1080, Low produces 74 FPS average, which is smooth for a survival game like Rust. The Medium preset at 1080p drops to 49 FPS average, which is still playable but noticeably less fluid, while High falls to 42 FPS and Ultra to 32 FPS.

At 2560x1440, the story becomes more difficult. Low settings yield 51 FPS average, which is acceptable, but Medium drops to 34 FPS, High to 29 FPS, and Ultra to 22 FPS. The game becomes increasingly unplayable as settings rise. At 3840x2160, even Low settings only manage 30 FPS average, with Medium at 20 FPS, High at 17 FPS, and Ultra at 13 FPS.

The most balanced experience appears to be 1080p with Low settings, as this is the only configuration that exceeds 60 FPS. For users who prefer higher visual quality, 1080p Medium at 49 FPS is the best compromise, as it maintains reasonable smoothness while improving visuals. At 1440p, Low settings are the only viable option, and 4K should be avoided entirely given that even Low settings fail to reach 30 FPS consistently.

Resolution Scaling

The FPS scaling from 1080p to 4K reveals a GPU-bound system. At Low settings, the RX 580 delivers 74 FPS at 1080p, 51 FPS at 1440p, and 30 FPS at 4K. This represents a 31% drop when moving from 1080p to 1440p, and a further 41% drop from 1440p to 4K. The scaling is consistent with a GPU that is running out of pixel throughput and memory bandwidth as resolution increases.

At Medium settings, the pattern holds: 49 FPS at 1080p, 34 FPS at 1440p, and 20 FPS at 4K. The drop from 1080p to 1440p is 31%, and from 1440p to 4K is 41%. At High settings, the numbers are 42 FPS, 29 FPS, and 17 FPS respectively, with drops of 31% and 41%. This consistent scaling pattern indicates that the GPU is the limiting factor; if the CPU were the bottleneck, we would expect to see smaller FPS differences between resolutions as the GPU becomes less stressed.

The Ultra preset shows the same trend: 32 FPS at 1080p, 22 FPS at 1440p, and 13 FPS at 4K. The fact that even at 1080p Ultra, the frame rate is only 32 FPS, while the CPU is in the 92nd percentile, is strong evidence that the RX 580's 6.175 TFLOPS of FP32 performance and 193.0 GTexel/s texture rate are insufficient for Rust's demands at higher quality settings.

Measured FPS Breakdown

At 1920x1080, the measured frame rates are as follows: Low settings produce 74 FPS average, Medium produces 49 FPS with a minimum of 42 FPS and maximum of 57 FPS, High produces 42 FPS, and Ultra produces 32 FPS. The Medium preset's min-max range of 42-57 FPS shows some frame time variance, but the overall averages are consistent with a GPU that is working hard but not completely overwhelmed.

At 2560x1440, Low settings deliver 51 FPS average, Medium delivers 34 FPS with a range of 29-39 FPS, High delivers 29 FPS, and Ultra delivers 22 FPS. The Medium preset at this resolution shows a narrower range than at 1080p, with the minimum at 29 FPS and maximum at 39 FPS, indicating that the GPU is more consistently saturated.

At 3840x2160, the results are uniformly poor. Low settings manage 30 FPS average, Medium drops to 20 FPS with a range of 17-23 FPS, High falls to 17 FPS, and Ultra bottoms out at 13 FPS. The Medium preset's minimum of 17 FPS is barely above what most players would consider a slideshow, and the maximum of 23 FPS is still below the threshold for smooth gameplay.

The data shows that the RX 580's performance degrades predictably as resolution increases, but the CPU's performance is never the limiting factor. Even at 4K Ultra, where the GPU is clearly struggling, the Ryzen 9 9900X's 12 cores and 24 threads are more than capable of handling the game's simulation and physics workloads.

FAQ

Q: Is this combo playable at 1080p?

A: Yes, but only at Low settings, which produce 74 FPS average. Medium settings drop to 49 FPS, High to 42 FPS, and Ultra to 32 FPS, all of which are below the 60 FPS threshold for smooth gameplay.

Q: What is the best resolution for this combination?

A: 1920x1080 with Low settings is the only configuration that exceeds 60 FPS. At 2560x1440, the best achievable is 51 FPS on Low, and at 3840x2160, even Low settings only reach 30 FPS.

Q: How does the CPU compare to its rivals?

A: The Ryzen 9 9900X scores 57,498 on average, which is 0.1% behind the AMD EPYC 9015 and 0.2% ahead of the AMD EPYC 7313. It trails the Intel Core i9-14900 by 1.1% and the Intel Xeon Platinum 8260M by 1.4%.

Q: How does the GPU compare to its rivals?

A: The RX 580 scores 12,928 on average, which is 0.1% behind the NVIDIA GeForce RTX 3050 Ti Mobile and 0.4% behind the GTX 1660 SUPER. It leads the AMD Radeon 740M by 0.5% and the AMD FirePro W5100 by 0.6%.

Q: Is the CPU or GPU the bottleneck in Rust?

A: The GPU is the bottleneck. The CPU ranks in the 92nd percentile among all processors, while the GPU ranks in the 53rd percentile. The consistent FPS scaling across resolutions confirms that the RX 580 is the limiting component.

Q: What is the minimum FPS recorded at any setting?

A: The lowest minimum FPS recorded is 17 FPS at 3840x2160 with Medium settings. The highest minimum is 42 FPS at 1920x1080 with Medium settings.

CPU Role

The Ryzen 9 9900X is a 12-core, 24-thread processor from AMD's 9000 series, built on the Zen 5 architecture with the Granite Ridge codename. It operates on the AMD Socket AM5 platform and is manufactured on TSMC's 4 nm process, with a die size of 2x 70.6 mm² and 16,630 million transistors.

Its base clock is 4.40 GHz with a boost clock of 5.60 GHz, and it has a TDP of 120 W. The cache hierarchy includes 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. The CPU supports DDR5 memory in a dual-channel configuration with a bandwidth of 89.6 GB/s, and it includes integrated Radeon Graphics.

In Rust, the CPU's role is to handle the game's simulation, including entity management, physics, and networking. The benchmark data shows that the CPU is not the limiting factor in this combo. Even at 1080p Low, where the GPU is least stressed, the frame rate is 74 FPS, which is well below what the CPU could theoretically deliver. The CPU's 3DMark scores support this: 12,552 with 16 threads and 13,929 with max threads, showing strong multi-threaded performance.

The CPU's 92nd percentile ranking among all CPUs means it outperforms the vast majority of processors on the market. In synthetic benchmarks, it scores 32,172 in Cinebench R23 multi-core and 22,174 in Geekbench multi-core. However, in Rust, these capabilities are largely untapped because the RX 580 cannot generate enough frames to stress the CPU. The CPU's single-thread performance is also strong, with a 3DMark single-thread score of 1,286 and a Cinebench R23 single-core score of 2,253, which is relevant for Rust's primary game thread.

GPU Role

The AMD Radeon RX 580 is a Polaris 20 chip built on GCN 4.0 architecture, manufactured on GlobalFoundries' 14 nm process with a die size of 232 mm² and 5,700 million transistors. It has a base clock of 1257 MHz and a boost clock of 1340 MHz, with memory running at 2000 MHz (8 Gbps effective).

The GPU features 8 GB of GDDR5 memory on a 256-bit bus, providing 256.0 GB/s of bandwidth. It has 2,304 shading units, 144 TMUs, and 32 ROPs, delivering 6.175 TFLOPS of FP32 performance and a texture rate of 193.0 GTexel/s. The card has a TDP of 185 W, requires a 450 W power supply, and uses a single 8-pin power connector. It supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3.

In Rust, the GPU's role is to render the game world, including terrain, buildings, and entities. The benchmark data shows that the RX 580 is the primary bottleneck in this combo. At 1080p Low, the GPU produces 74 FPS, but this drops to 49 FPS at Medium, 42 FPS at High, and 32 FPS at Ultra. The GPU's 53rd percentile ranking among all GPUs places it in the middle of the pack, but Rust's demanding rendering requirements expose its limitations.

The RX 580's memory bandwidth of 256.0 GB/s is a particular weakness at higher resolutions. As resolution increases, the GPU must access more texture data, and the 8 GB VRAM capacity becomes a constraint. The measured FPS data shows that at 4K, even Low settings only reach 30 FPS, indicating that the GPU is completely overwhelmed. The GPU's nearest rivals include the RTX 3050 Ti Mobile, which scores 0.1% higher, and the GTX 1660 SUPER, which scores 0.4% higher, but none of these would provide a transformative improvement in Rust at this CPU level.