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 158 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 125 FPS. At 4K, all settings exceed 87 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The EPYC 4585PX is 476% above the recommended CPU (Core i7-4790K).
No major FPS-ceiling mismatch detected. The GeForce RTX 4090 and EPYC 4585PX stay close in effective frame-generation ceiling across the tested resolutions and quality settings.
Approximated average price on current market:
Combo price: $2475. At 1080p Ultra, this combo delivers 158 FPS, equivalent to 0.06 FPS per dollar.
| Resolution | Low | Medium | High | Ultra |
|---|---|---|---|---|
| 1080p | 0.106 fps/$ | 0.093 fps/$ | 0.075 fps/$ | 0.064 fps/$ |
| 1440p | 0.096 fps/$ | 0.085 fps/$ | 0.062 fps/$ | 0.051 fps/$ |
| 4k | 0.062 fps/$ | 0.055 fps/$ | 0.044 fps/$ | 0.035 fps/$ |
* Table values represent FPS per Dollar (higher is better)
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
This CPU/GPU pair is mostly balanced in Rust. Across tested presets: GPU limits in 0/12, CPU limits in 0/12, and balanced in 12/12. Peak observed performance in the sampled cells is around 263 FPS.
The EPYC 4585PX 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 | Balanced | Balanced | Balanced |
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) | CPU18% - 36% <> GPU81% - 98% <> | CPU20% - 36% <> GPU81% - 97% <> | CPU18% - 35% <> GPU90% - 95% <> | CPU26% - 53% <> GPU90% - 95% <> |
| 1440p (2K QHD) | CPU18% - 36% <> GPU81% - 98% <> | CPU20% - 36% <> GPU81% - 97% <> | CPU19% - 36% <> GPU90% - 95% <> | CPU27% - 54% <> GPU90% - 95% <> |
| 4K (Ultra HD) | CPU11% - 33% <> GPU93% - 100% <> | CPU12% - 34% <> GPU93% - 100% <> | CPU12% - 33% <> GPU100% - 100% | CPU15% - 46% <> GPU100% - 100% |
The EPYC 4585PX + GeForce RTX 4090 pairing runs this title with CPU utilization between 11% and 54% and GPU utilization between 81% and 100%. EPYC 4585PX keeps significant headroom across presets, while GeForce RTX 4090 carries most of the graphics load at heavier visual settings. As resolution scales, average GPU load rises from 91% at 1080p to 98% at 4K, while CPU averages move from 30% to 24%.
From a utilization perspective, this is a GPU-heavy load profile. At 4K (Ultra HD) High, the GeForce RTX 4090 averages 100% usage (100-100%), while the EPYC 4585PX stays at 22% (12-33%). This shows the graphics pipeline is carrying most of the workload, but utilization alone does not define the FPS limiter.
At 1080p, averages sit around CPU 30% and GPU 91%. At 1440p, that shifts to CPU 31% and GPU 91%, and at 4K it reaches CPU 24% and GPU 98%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
1080p (Full HD) Medium is the most balanced preset based on this dataset. It runs around CPU 28% (20-36%) and GPU 89% (81-97%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while EPYC 4585PX remains stable for consistent frame delivery.
Upgrade priority should be the GPU. The GeForce RTX 4090 reaches 100% average load at 4K (Ultra HD) High while the EPYC 4585PX still has headroom, so a faster graphics card would deliver the largest uplift.
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 CPU is 476% above and your GPU is 244% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+476%vsrecommended
+244%vsrecommended
+592%vsminimum
+589%vsminimum
Yes, the EPYC 4585PX paired with the GeForce RTX 4090 can run Rust smoothly up to 4k achieving around 87 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 476% above the recommended requirements.
This CPU + GPU combo costs approximately $2475 ($826 CPU (Rank #66 Value) + $1649 GPU (Rank #77 Value)). This is a well-balanced setup, meaning you're getting good value from both components without significant waste.
This setup is already well-balanced for Rust. No significant bottleneck - CPU and GPU are well matched across all settings. Both the EPYC 4585PX and GeForce RTX 4090 complement each other effectively, so upgrading either component individually would yield diminishing returns. If you want more FPS, you'd benefit most from upgrading both CPU and GPU together.
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 EPYC 4585PX 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.
