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 127 FPS. At 4K, all settings exceed 73 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The Ryzen 7 PRO 7840U is 100% above the recommended CPU (Core i7-4790K).
The Ryzen 7 PRO 7840U determines the performance ceiling at 4k (medium/ultra), while the GPU has headroom. The system is well balanced at all 1080p settings, all 1440p settings, 4k (low/high).
At 4k ultra, the Ryzen 7 PRO 7840U sets the ceiling at about 73 FPS, while the GeForce RTX 4090 could reach 84 FPS. In this scenario, the CPU limits the GPU potential by 13% (FPS gap: 11 FPS). Overall distribution: CPU limits 2/12 cells, GPU limits 0/12, balanced 10/12.
The Ryzen 7 PRO 7840U 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) | Balanced | CPU Limits GPU 10% | Balanced | CPU Limits GPU 13% |
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.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p (Full HD) | CPU34% - 56% <> GPU58% - 78% <> | CPU37% - 56% <> GPU60% - 81% <> | CPU34% - 56% <> GPU77% - 96% <> | CPU29% - 53% <> GPU75% - 95% <> |
| 1440p (2K QHD) | CPU33% - 56% <> GPU59% - 78% <> | CPU36% - 56% <> GPU61% - 81% <> | CPU33% - 57% <> GPU79% - 96% <> | CPU27% - 53% <> GPU77% - 95% <> |
| 4K (Ultra HD) | CPU31% - 55% <> GPU77% - 84% <> | CPU33% - 56% <> GPU78% - 87% <> | CPU31% - 56% <> GPU96% - 100% <> | CPU26% - 53% <> GPU96% - 100% <> |
The Ryzen 7 PRO 7840U + GeForce RTX 4090 pairing runs this title with CPU utilization between 26% and 57% and GPU utilization between 58% and 100%. Ryzen 7 PRO 7840U keeps significant headroom across presets, while GeForce RTX 4090 becomes the primary limiter at high visual load. As resolution scales, average GPU load rises from 77% at 1080p to 90% at 4K, while CPU averages move from 44% to 43%.
This profile is GPU-bound. At 4K (Ultra HD) High, the GeForce RTX 4090 averages 98% usage (96-100%), while the Ryzen 7 PRO 7840U stays at 44% (31-56%), indicating the graphics pipeline is the limiting stage.
At 1080p, averages sit around CPU 44% and GPU 77%. At 1440p, that shifts to CPU 44% and GPU 78%, and at 4K it reaches CPU 43% and GPU 90%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
1440p (2K QHD) High is the most balanced preset based on this dataset. It runs around CPU 45% (33-57%) and GPU 88% (79-96%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Ryzen 7 PRO 7840U remains stable for consistent frame delivery.
Upgrade priority should be the GPU. The GeForce RTX 4090 reaches 98% average load at 4K (Ultra HD) High while the Ryzen 7 PRO 7840U still has headroom, so a faster graphics card would deliver the largest uplift.
Understanding Hardware Utilization & Bottlenecks: These percentages represent how much of your component's maximum processing power is actively being used during gameplay. This is the key to identifying performance bottlenecks in any system.
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 CPU is 100% above and your GPU is 244% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+100%vsrecommended
+244%vsrecommended
+141%vsminimum
+589%vsminimum
Yes, the Ryzen 7 PRO 7840U paired with the GeForce RTX 4090 can run Rust smoothly up to 4k achieving around 73 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 100% 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.
For Rust, upgrading the CPU would have the biggest impact on performance. The Ryzen 7 PRO 7840U 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: 4k medium, 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 Ryzen 7 PRO 7840U 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.
