Rust

The AMD Radeon RX 6800 XT pairs 16 GB of GDDR6 memory on a 256-bit bus with 512.0 GB/s of bandwidth, a combination that proves substantial for Rust’s demanding open-world environments. The GPU’s boost clock reaches 2250 MHz, with a game clock of 2015 MHz, and its 4608 shading units deliver 20.74 TFLOPS of FP32 compute. These specifications position the card at the 87th percentile among all GPUs, with an average benchmark score of 49982, placing it within 2.6% of the NVIDIA GeForce RTX 4070 Ti SUPER and 1.7% behind the NVIDIA RTX A1000. In Rust, the measured frames per second (FPS) data shows that the 16 GB frame buffer is not the primary constraint at any tested setting; instead, the rasterization throughput and memory bandwidth dictate performance, especially as resolution increases. The card’s RDNA 2.0 architecture and 72 ray accelerators contribute to its capability, though Rust’s heavy draw calls and object density lean more on raw fill rate and geometry processing than on ray tracing, making the 128 ROPS and 288 TMUs the more relevant units for this title.

How This Combo Ranks

Within the database of 1717 tested combinations, the AMD Ryzen 9 9900X with the RX 6800 XT holds the 543rd position for Rust, placing it in the upper third of all configurations. This rank reflects a pairing where the CPU’s strong single-thread performance complements the GPU’s high refresh rate potential, but the overall standing is moderated by the GPU’s mid-tier placement among contemporaries. The Ryzen 9 9900X achieves a percentile of 94 among all CPUs, with an average benchmark score of 54450, while the RX 6800 XT sits at the 87th GPU percentile. The delta between these two components—a 7-point gap in percentiles—suggests the GPU is the more limiting factor in this specific game, which is consistent with Rust’s tendency to scale with GPU load at higher settings. Compared to the CPU’s nearest rivals, the combo benefits from a 0.7% advantage over the Intel Core i7-14700F and a 1.5% edge over the Intel Core Ultra 5 245K, but the GPU’s 2.6% deficit relative to the RTX 4070 Ti SUPER means that swapping the graphics card alone would likely improve the rank more than changing the processor. The 543rd rank out of 1717 is a solid mid-field result, indicating that this setup delivers smooth gameplay at 1080p and 1440p without being a top-tier contender at 4K Ultra.

Measured FPS Breakdown

The measured FPS data for Rust, captured across three resolutions and four settings tiers, reveals a consistent pattern of performance scaling. At 1920x1080, the combination provides an average of 208.5 FPS on Low settings, which represents the highest frame rate in the entire dataset. Moving up the quality ladder, Medium delivers 138.6 FPS, High produces 117.9 FPS, and Ultra drops to 90.1 FPS. These numbers indicate that at 1080p, the Ryzen 9 9900X’s 12 cores and 24 threads, boosted by a 5.60 GHz clock, are sufficient to feed the GPU, as even the Ultra preset maintains a frame rate well above the 60 FPS threshold for most displays. At 2560x1440, the same settings show a predictable decline: Low averages 141.5 FPS, Medium 99.1 FPS, High 80.6 FPS, and Ultra 60.3 FPS. The 1440p results demonstrate that the RX 6800 XT remains capable of high refresh rates on lower presets, but Ultra approaches the 60 FPS boundary, suggesting a need for tuning in demanding scenes. At 3840x2160, the GPU begins to show its limits: Low averages 86.8 FPS, Medium 56 FPS, High 48.8 FPS, and Ultra 35.3 FPS. The 4K Ultra figure is notably below playable standards, while even 4K Medium barely clears 60 FPS, making the card best suited for 1440p gaming or 4K with reduced settings.

Resolution Scaling

The transition from 1080p to 4K reveals how the RX 6800 XT’s memory bandwidth and pixel throughput interact with the Ryzen 9 9900X’s processing power. At Low settings, the average FPS drops from 208.5 at 1080p to 141.5 at 1440p and then to 86.8 at 4K, representing a 58.4% reduction from 1080p to 4K. This scaling is relatively gentle, indicating that at Low settings, the CPU still plays a significant role in maintaining frame rates, as the GPU is not fully saturated at lower resolutions. However, at Ultra settings, the drop is more severe: 90.1 FPS at 1080p falls to 60.3 FPS at 1440p and 35.3 FPS at 4K, a 60.8% decrease from 1080p to 4K. This steeper decline suggests that as graphical load increases, the GPU becomes the dominant bottleneck, with the 512.0 GB/s bandwidth and 288.0 GPixel/s pixel rate struggling to keep up with the increased pixel count. The data points to a system where the CPU is capable of delivering high frame rates at lower resolutions—evidenced by the 208.5 FPS at 1080p Low—but the GPU’s 20.74 TFLOPS compute is insufficient for 4K Ultra, where the 35.3 FPS result falls below the 60 FPS target. The limiting component at 4K is clearly the GPU, as the CPU’s 64 MB shared L3 cache and 89.6 GB/s memory bandwidth are more than adequate for the game’s logic, but the GPU’s fill rate cannot sustain high settings at that resolution.

FAQ

Q: What is the highest average FPS recorded for this combo in Rust?

A: The highest average FPS is 208.5, achieved at 1920x1080 with Low settings.

Q: How does the RX 6800 XT compare to the NVIDIA GeForce RTX 4070 Ti SUPER in average benchmark scores?

A: The RX 6800 XT has an average benchmark score of 49982, while the RTX 4070 Ti SUPER scores 48704, giving the RX 6800 XT a 2.6% advantage.

Q: At what resolution and setting does this combo fail to reach 60 FPS?

A: At 3840x2160 with High settings, the average FPS is 48.8, and with Ultra settings it drops to 35.3, both below the 60 FPS threshold.

Q: What is the combo’s rank out of all tested configurations in Rust?

A: The combo ranks 543rd out of 1717 tested combinations.

Q: Which CPU rival shows the smallest performance delta to the Ryzen 9 9900X?

A: The AMD Ryzen 9 9900X3D has a delta of -0.4%, meaning the 9900X is 0.4% behind it, the smallest gap among the listed rivals.

Q: How does the FPS at 1080p Ultra compare to 1440p Ultra?

A: At 1080p Ultra, the average FPS is 90.1, while at 1440p Ultra, it is 60.3, a 49.4% reduction in frame rate.

CPU Role

The AMD Ryzen 9 9900X, with its 12 cores and 24 threads, provides a robust foundation for Rust, a game known for its server-side simulation and complex entity interactions. The CPU’s base clock of 4.40 GHz and boost clock of 5.60 GHz, combined with a single-thread benchmark score of 1286 in 3DMark, ensure that the game’s primary thread—often a bottleneck in survival titles—has ample headroom. The 64 MB shared L3 cache is particularly beneficial for Rust’s procedural map generation and item inventory systems, reducing memory latency during gameplay. In the measured FPS data, the CPU’s contribution is most evident at 1080p Low, where the 208.5 FPS result far exceeds what the GPU could achieve independently, indicating that the processor is not limiting frame rates at lower resolutions. However, the CPU’s percentile of 94 versus the GPU’s 87 suggests that in this pairing, the GPU is the weaker link; upgrading to a higher-tier graphics card would yield larger gains than swapping the CPU. The Ryzen 9 9900X’s 3DMark multi-thread score of 13929 and Cinebench R23 multi-core score of 46438 demonstrate its capability to handle background tasks and game logic simultaneously, but Rust’s reliance on single-thread performance is better served by the 6555 single-core score in Cinebench R23, which places it ahead of most rivals. The memory support for DDR5 with a dual-channel bus and 89.6 GB/s bandwidth further complements the CPU, ensuring that data transfer between the processor and GPU does not become a bottleneck, as evidenced by the smooth scaling from 1080p to 1440p before the GPU’s limits take over at 4K.