A true test for system memory. Procedural maps can exhaust RAM quickly; 16GB is the minimum, and 32GB is recommended. CPUs with 3D V-Cache (AMD X3D) offer massive performance gains here.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 61 FPS. At 1440p, frame rates range from 45 to 118 FPS. At 4K, frame rates range from 27 to 60 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The FX-8350 is 42% below minimum CPU requirement.
The FX-8350 sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom.
Approximated average price on current market:
Combo price: $1779. At 1080p Ultra, this combo delivers 61 FPS, equivalent to 0.03 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.078 fps/$ | 0.064 fps/$ | 0.048 fps/$ | 0.034 fps/$ |
| 1440p | 0.066 fps/$ | 0.052 fps/$ | 0.035 fps/$ | 0.025 fps/$ |
| 4k | 0.034 fps/$ | 0.029 fps/$ | 0.022 fps/$ | 0.015 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 4k ultra, the FX-8350 sets the ceiling at about 27 FPS, while the GeForce RTX 4090 could reach 88 FPS. In this scenario, the CPU limits the GPU potential by 69% (FPS gap: 61 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your FX-8350 is the limiting side in the heaviest mismatch. This means part of the GeForce RTX 4090 rendering potential remains unused in those settings.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU Limits GPU 44% | CPU Limits GPU 48% | CPU Limits GPU 52% | CPU Limits GPU 61% |
| 1440p (2K QHD) | CPU Limits GPU 48% | CPU Limits GPU 54% | CPU Limits GPU 57% | CPU Limits GPU 65% |
| 4K (Ultra HD) | CPU Limits GPU 59% | CPU Limits GPU 61% | CPU Limits GPU 63% | CPU Limits GPU 69% |
We estimate the maximum FPS the processor can sustain and the maximum FPS the graphics card can sustain in each setting, then compare those limits directly.
Limit Factor formula: (stronger - weaker) / stronger. Example: if CPU ceiling is 200 FPS and GPU ceiling is 140 FPS, then GPU limits CPU by 30%.
CPU Limits GPU means the processor ceiling is lower. GPU Limits CPU means the graphics ceiling is lower. Balanced means the FPS ceilings are close enough that the gap is negligible.
A component can still be the FPS limiter without reaching 100% utilization. The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU58% - 81% <> GPU76% - 80% <> | CPU60% - 85% <> GPU76% - 81% <> | CPU58% - 83% <> GPU71% - 87% <> | CPU54% - 83% <> GPU70% - 87% <> |
| 1440p (2K QHD) | CPU58% - 81% <> GPU76% - 80% <> | CPU60% - 84% <> GPU76% - 82% <> | CPU59% - 83% <> GPU72% - 87% <> | CPU55% - 83% <> GPU71% - 86% <> |
| 4K (Ultra HD) | CPU57% - 80% <> GPU80% - 100% <> | CPU59% - 83% <> GPU80% - 100% <> | CPU58% - 82% <> GPU93% - 93% | CPU54% - 82% <> GPU93% - 93% |
The FX-8350 + GeForce RTX 4090 pairing runs this title with CPU utilization between 54% and 85% and GPU utilization between 70% and 100%. FX-8350 stays in a controlled operating range, while GeForce RTX 4090 carries most of the graphics load at heavier visual settings. As resolution scales, average GPU load rises from 78% at 1080p to 92% at 4K, while CPU averages move from 70% to 69%.
The utilization pattern is relatively even. The GeForce RTX 4090 reaches 93% average at its highest-load preset, while the FX-8350 peaks at 72% average. This suggests a fairly controlled load distribution, but the actual FPS-limiting side should still be read from the limiter analysis above.
At 1080p, averages sit around CPU 70% and GPU 78%. At 1440p, that shifts to CPU 71% and GPU 79%, and at 4K it reaches CPU 69% and GPU 92%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
4K (Ultra HD) Low is the most balanced preset based on this dataset. It runs around CPU 68% (57-80%) and GPU 90% (80-100%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while FX-8350 remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the FX-8350 and GeForce RTX 4090 remain reasonably matched for this title.
Understanding Hardware Utilization: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. They describe hardware load, but they do not directly tell you which component sets the FPS ceiling.
Important: a CPU or GPU can still be the FPS limiter without reaching 100% utilization. Two processors can both show 40% usage and still deliver very different frame rates, depending on per-core speed, cache, engine threading, driver overhead, and frame preparation efficiency.
Data generated by our Machine Learning engine trained on real-world benchmarks. Shows the approximate average utilization at each setting.
See how your processor and graphics card compare against the game official minimum and recommended system specs. The placement of your hardware is calculated using relative synthetic performance scores to help you gauge overall playability.
Your hardware is below minimum requirements. CPU is the limiting factor (42% below minimum). Expect performance issues. Low settings recommended.
-52%vsrecommended
+244%vsrecommended
-42%vsminimum
+589%vsminimum
Yes, the FX-8350 paired with the GeForce RTX 4090 can run Rust smoothly up to 1080p achieving around 61 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 52% below the recommended requirements.
This CPU + GPU combo costs approximately $1779 ($130 CPU + $1649 GPU (Rank #77 Value)). Since the CPU is the main limiting factor, investing in a stronger processor will improve your framerates and overall value. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).
For Rust, upgrading the CPU would have the biggest impact on performance. The FX-8350 is currently the limiting factor — the GeForce RTX 4090 has extra headroom that a faster processor could take advantage of. This is especially noticeable at 1080p where CPU performance matters more. CPU-limited at: 1080p low, 1080p medium, 1080p high, 1080p ultra, 1440p low, 1440p medium, 1440p high, 1440p ultra, 4k low, 4k medium, 4k high, 4k ultra.
Rust does not currently support Frame Generation technologies like DLSS 3 or FSR 3. Your performance is based entirely on native rendering. If the game adds support in a future update, newer GPUs will benefit the most.
Rust requires at minimum a Core i7-3770 (CPU) and GeForce GTX 670 (GPU) with 10 GB RAM and 25 GB (SSD) storage. For the recommended experience, you need a Core i7-4790K and GeForce GTX 980 with 16 GB RAM. Your hardware falls below the minimum requirements for this game, which may result in poor performance.
These Rust FPS results are not arbitrary numbers. They come from calculations informed by thousands of real gaming benchmarks, and the typical accuracy range is around 10% to 15%. That makes them far more useful than generic FPS calculators that simply invent values without a benchmark foundation. Actual in-game performance can still vary with drivers, updates, RAM configuration, cooling, and the exact scene being rendered.
Performance estimates are based on synthetic benchmarks and hardware capabilities.
Results may vary based on drivers, OS, and background processes.
