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 157 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 124 FPS. At 4K, all settings exceed 76 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The Ryzen 9 7845HX is 267% above the recommended CPU (Core i7-4790K).
The Ryzen 9 7845HX determines the performance ceiling at 4k (medium/high), while the GPU has headroom. The system is well balanced at all 1080p settings, all 1440p settings, 4k (low/ultra).
At 4k medium, the Ryzen 9 7845HX sets the ceiling at about 115 FPS, while the GeForce RTX 4090 could reach 131 FPS. In this scenario, the CPU limits the GPU potential by 12% (FPS gap: 16 FPS). Overall distribution: CPU limits 4/12 cells, GPU limits 0/12, balanced 8/12.
The Ryzen 9 7845HX and GeForce RTX 4090 stay close in effective frame-generation ceiling across most presets, so neither side consistently suppresses the other by a large margin.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | Balanced | Balanced | Balanced | Balanced |
| 1440p (2K QHD) | Balanced | Balanced | Balanced | Balanced |
| 4K (Ultra HD) | CPU Limits GPU 6% | CPU Limits GPU 12% | CPU Limits GPU 10% | CPU Limits GPU 10% |
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 267% above and your GPU is 244% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+267%vsrecommended
+244%vsrecommended
+341%vsminimum
+589%vsminimum
Yes, the Ryzen 9 7845HX paired with the GeForce RTX 4090 can run Rust smoothly up to 4k achieving around 76 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 267% above the recommended requirements.
Price data is not currently available for this combination. In general, look for setups where the CPU and GPU are balanced — this ensures you're not overspending on one component that the other can't keep up with.
Your Ryzen 9 7845HX is already an incredibly powerful processor. While it's technically the first component to hit its limit (which is completely normal in state-of-the-art builds), there is no meaningful upgrade path that would drastically improve your Rust performance right now. CPU fully utilized at: 4k medium, 4k high.
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 Ryzen 9 7845HX 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.
