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 102 FPS. At 1440p, all settings exceed 83 FPS. At 4K, frame rates range from 36 to 87 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The Core i5-10400F is 6% above the recommended CPU (Core i7-4790K).
The Core i5-10400F determines the performance ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GPU has headroom.
Approximated average price on current market:
Combo price: $1751. At 1080p Ultra, this combo delivers 102 FPS, equivalent to 0.06 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.102 fps/$ | 0.092 fps/$ | 0.071 fps/$ | 0.058 fps/$ |
| 1440p | 0.097 fps/$ | 0.084 fps/$ | 0.060 fps/$ | 0.047 fps/$ |
| 4k | 0.050 fps/$ | 0.039 fps/$ | 0.030 fps/$ | 0.021 fps/$ |
* Table values represent FPS per Dollar (higher is better)
At 4k ultra, the Core i5-10400F sets the ceiling at about 36 FPS, while the GeForce RTX 4090 could reach 84 FPS. In this scenario, the CPU limits the GPU potential by 57% (FPS gap: 48 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Core i5-10400F 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 27% | CPU Limits GPU 29% | CPU Limits GPU 32% | CPU Limits GPU 36% |
| 1440p (2K QHD) | CPU Limits GPU 24% | CPU Limits GPU 30% | CPU Limits GPU 31% | CPU Limits GPU 33% |
| 4K (Ultra HD) | CPU Limits GPU 40% | CPU Limits GPU 48% | CPU Limits GPU 50% | CPU Limits GPU 57% |
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.
The displayed percentages are derived from FPS ceilings, not generic utilization heuristics.
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 CPU is 6% above and your GPU is 244% above the recommended specs. High/Ultra at 1080p. Lower settings for higher resolutions.
+6%vsrecommended
+244%vsrecommended
+28%vsminimum
+589%vsminimum
Yes, the Core i5-10400F paired with the GeForce RTX 4090 can run Rust smoothly up to 1440p achieving around 83 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 6% above the recommended requirements.
This CPU + GPU combo costs approximately $1751 ($102 CPU (Rank #107 Value) + $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 Core i5-10400F 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 Core i5-10400F and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
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.
