Rust

Resolution Scaling

The measured FPS data for Rust with the AMD Ryzen 5 8400F and NVIDIA GeForce GTX 1650 shows a predictable but steep decline as resolution increases. At 1080p with Low settings, the combo averages 63.6 FPS. Dropping to 1440p Low reduces that to 43.8 FPS, a 31% loss. Moving to 4K Low yields just 27.2 FPS, which is 57% below the 1080p Low result.

This scaling pattern reveals that the GTX 1650 is the primary limiting component at higher resolutions. The GPU has 4 GB of GDDR5 memory and a 128-bit bus, which is modest by modern standards. The 128.1 GB/s memory bandwidth gets saturated quickly as pixel count rises. At 4K, even Low settings only produce 27.2 FPS, suggesting the GPU cannot feed frames fast enough regardless of CPU headroom.

The CPU side of this equation is less strained. The Ryzen 5 8400F has 6 cores and 12 threads, with a boost clock of 4.70 GHz. Its single-thread performance is strong, scoring 951 in 3dmark_single_thread and 2,943 in Cinebench R23 single-core. For Rust, which relies heavily on draw calls and physics calculations, this CPU has enough throughput to keep up with the GTX 1650 at 1080p. The data supports this: at 1080p Low, the combo hits 63.6 FPS, which is near the practical limit for this GPU class.

The gap between Low and Ultra settings widens dramatically at higher resolutions. At 1080p, Low gives 63.6 FPS while Ultra gives 29.9 FPS — a 53% reduction. At 1440p, Low gives 43.8 FPS and Ultra gives 17.5 FPS — a 60% reduction. At 4K, Low gives 27.2 FPS and Ultra gives 13.3 FPS — a 51% reduction. This consistency indicates that the GTX 1650's shading units (896) and texture units (56) are the bottleneck, not memory or CPU.

The 4K numbers are essentially unplayable across all settings. Even the best case, Low at 27.2 FPS, is below acceptable smoothness for a survival game where reaction time matters. The 1440p results are marginal: Medium at 31.4 FPS is borderline, while Low at 43.8 FPS is playable but not ideal. The 1080p results are the only ones where the combo delivers a genuinely smooth experience, particularly at Low and Medium.

FAQ

Q: Can this combo run Rust at 4K?

A: Technically yes, but not at playable frame rates. The best 4K result is Low settings at 27.2 FPS average. High, Medium, and Ultra all fall below 18 FPS (13.6, 17.1, and 13.3 FPS respectively). This is below the threshold for smooth gameplay in a competitive survival setting.

Q: What is the best resolution for this hardware?

A: 1080p is the only resolution where the combo achieves consistently playable numbers. At 1080p Low, it averages 63.6 FPS. At 1080p Medium, it drops to 44.7 FPS. Even 1080p High at 35.6 FPS is usable. 1440p Low at 43.8 FPS is the only 1440p option above 40 FPS.

Q: How does the GTX 1650 compare to its nearest rivals in synthetic benchmarks?

A: The GTX 1650's average benchmark score is 8,713. Its closest rival, the NVIDIA GeForce RTX 3050 A Mobile, scores 8,746, which is 0.4% higher. The AMD Radeon 550X scores 8,749 (0.4% higher), and the NVIDIA Quadro P2200 scores 8,671 (0.5% lower). The GTX 1650 sits at the 43rd percentile of all GPUs.

Q: Is the Ryzen 5 8400F holding back the GTX 1650?

A: No, the data suggests the opposite. The CPU scores at the 82nd percentile of all CPUs with an average benchmark score of 25,064. Its nearest rival, the AMD Ryzen 7 2700X, scores 25,057 (0% difference). The CPU has ample single-thread performance (951 in 3dmark_single_thread) to feed the GPU at 1080p. The GPU is the limiting factor.

Q: What is the frame rate difference between Low and Ultra at 1080p?

A: At 1080p, Low settings produce 63.6 FPS while Ultra produces 29.9 FPS. That is a 33.7 FPS difference, meaning Ultra is 53% slower. Medium sits in between at 44.7 FPS, and High at 35.6 FPS. The scaling is roughly linear, which points to GPU compute limits rather than memory.

Q: How does this combo rank among all tested combinations for Rust?

A: This combo ranks 1,673 out of 1,717 tested combos for Rust. It sits in the bottom 2.6% of all combinations. This low rank reflects the GTX 1650's modest performance, which is at the 43rd percentile of all GPUs, paired with a CPU that is far more capable.

Settings Recommendations

The measured data provides a clear hierarchy for settings. At 1080p, Low settings deliver 63.6 FPS, which is the only result above 60 FPS in the entire dataset. This should be the baseline for any player prioritizing smoothness. Medium settings at 44.7 FPS are still playable and offer a meaningful visual upgrade. High at 35.6 FPS and Ultra at 29.9 FPS are within the playable range but feel noticeably less responsive.

At 1440p, the options narrow. Low settings at 43.8 FPS is the only setting above 40 FPS. Medium at 31.4 FPS is borderline, and High at 25.7 FPS or Ultra at 17.5 FPS are not recommended for any competitive play. For 4K, no setting achieves 30 FPS, so this resolution should be avoided entirely unless the player accepts a slideshow.

The best experience per the measured rows is 1080p with Low settings. This gives 63.6 FPS, which is 19.8 FPS higher than 1080p Medium and 33.7 FPS higher than 1080p Ultra. The trade-off in visual fidelity is acceptable given the GPU's limitations. If the player wants better visuals, 1080p Medium at 44.7 FPS is the next best option, offering a 29% reduction in frame rate for a moderate visual improvement.

For players with 1440p monitors, the recommendation is Low settings at 43.8 FPS. This is still below the 60 FPS target but is the most playable option. The alternative is dropping to 1080p and using Medium or High settings, which yields 44.7 or 35.6 FPS respectively. The measured data does not support any 4K configuration for a positive experience.

How This Combo Ranks

In the database of tested combinations for Rust, this pairing of AMD Ryzen 5 8400F and NVIDIA GeForce GTX 1650 ranks 1,673 out of 1,717 combos. That places it in the bottom 2.6% of all tested systems. The rank reflects the GPU's position more than the CPU's. The GTX 1650 sits at the 43rd percentile of all GPUs with an average benchmark score of 8,713. In contrast, the Ryzen 5 8400F sits at the 82nd percentile of all CPUs with an average benchmark score of 25,064.

The mismatch is stark. The CPU is a modern 6-core, 12-thread part built on TSMC's 4 nm process with a 4.70 GHz boost clock. It has enough single-thread performance to handle Rust's demanding physics and building mechanics. The GPU, however, is a 12 nm Turing part from 2019 with 4 GB of GDDR5 memory. Its 2.984 TFLOPS of FP32 performance is simply not enough for a game like Rust at higher settings or resolutions.

Compared to the nearest rival combos, this system's performance is tightly clustered. The CPU's nearest rival, the AMD Ryzen 7 2700X, scores 25,057 versus the 8400F's 25,064 — a 0% difference. The GPU's nearest rival, the NVIDIA GeForce RTX 3050 A Mobile, scores 8,746 versus the GTX 1650's 8,713 — a 0.4% difference. These margins are within noise, meaning the combo's rank is determined by the weakest link, which is the GPU.

The low rank (1,673 of 1,717) is a direct consequence of the GTX 1650's position in the GPU hierarchy. For Rust, which is known to be CPU-intensive, the 8400F provides a strong foundation. But the measured FPS data shows that the GPU cannot translate that CPU headroom into playable frame rates above 1080p Low. Players with this combo should treat it as a 1080p machine for Rust.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor from the 8000 series, built on the Zen 4 architecture with a 4 nm process. It has a base clock of 4.20 GHz and a boost clock of 4.70 GHz. The L3 cache is 16 MB shared, and it supports dual-channel DDR5 memory with a bandwidth of 83.2 GB/s. These specs are relevant to Rust because the game's server-side simulation and client-side rendering both benefit from strong single-thread performance.

In synthetic benchmarks, the 8400F scores 951 in 3dmark_single_thread and 2,943 in Cinebench R23 single-core. Its multi-threaded scores are equally strong: 20,851 in Cinebench R23 multicore and 6,165 in 3dmark_max_threads. The CPU sits at the 82nd percentile of all CPUs, which is a high ranking. Its nearest rival, the AMD Ryzen 7 2700X, has an average score of 25,057 versus the 8400F's 25,064, showing they are effectively tied in overall synthetic performance.

For Rust specifically, the CPU's role is to handle the game's simulation tick rate, entity updates, and building integrity checks. The 4.70 GHz boost clock and 16 MB L3 cache provide responsive single-thread performance. The measured FPS data supports this: at 1080p Low, the combo achieves 63.6 FPS, which is close to the limit of what a GTX 1650 can produce. If the CPU were the bottleneck, we would expect to see frame rates plateau across different resolutions. Instead, we see FPS drop from 63.6 at 1080p Low to 43.8 at 1440p Low, a 31% reduction. This indicates the GPU is the limiting factor.

The 8400F's 12 threads are more than Rust needs. The game typically uses 4-6 threads effectively, so the CPU has headroom. This is why the combo can maintain 63.6 FPS at 1080p Low — the CPU is not stressed, and the GPU is doing all the work. Players should not expect CPU upgrades to improve performance with this GPU. The bottleneck is firmly in the graphics card.

Measured FPS Breakdown

The complete measured FPS dataset for Rust with the AMD Ryzen 5 8400F and NVIDIA GeForce GTX 1650 is as follows:

1920x1080:

• Low: 63.6 FPS average
• Medium: 44.7 FPS average
• High: 35.6 FPS average
• Ultra: 29.9 FPS average

2560x1440:

• Low: 43.8 FPS average
• Medium: 31.4 FPS average
• High: 25.7 FPS average
• Ultra: 17.5 FPS average

3840x2160:

• Low: 27.2 FPS average
• Medium: 17.1 FPS average
• High: 13.6 FPS average
• Ultra: 13.3 FPS average

The 1080p Low result of 63.6 FPS is the only number above 60 FPS in the entire dataset. It is 19.8 FPS higher than 1080p Medium (44.7) and 33.7 FPS higher than 1080p Ultra (29.9). The gap between Low and Medium is consistent across resolutions: 18.9 FPS at 1080p, 12.4 FPS at 1440p, and 10.1 FPS at 4K. This suggests that the Low to Medium transition has a fixed cost in GPU work, which scales with pixel count.

The High to Ultra transition is much smaller. At 1080p, the difference is 5.7 FPS (35.6 to 29.9). At 1440p, it is 8.2 FPS (25.7 to 17.5). At 4K, it is 0.3 FPS (13.6 to 13.3). This near-zero difference at 4K indicates that the GPU is completely saturated at that resolution, and the Ultra preset adds negligible additional strain over High.

The 1440p results show a steep drop from Low to Medium (12.4 FPS), but the game remains technically playable at Low (43.8 FPS). The 4K results are uniformly poor, with the best case (Low at 27.2 FPS) being 16.4 FPS below the 1440p Low result. The data clearly shows that this combo is a 1080p solution for Rust, with 1440p Low as a stretch target and 4K as a non-starter.