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 108 FPS. At 1440p, all settings exceed 75 FPS. At 4K, frame rates range from 30 to 54 FPS.
The GeForce RTX 4090 is 244% above the recommended GPU (GeForce GTX 980) for Rust. The Xeon Gold 6240 is 103% above the recommended CPU (Core i7-4790K).
The Xeon Gold 6240 sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom.
This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.
At 4k medium, the Xeon Gold 6240 sets the ceiling at about 46 FPS, while the GeForce RTX 4090 could reach 133 FPS. In this scenario, the CPU limits the GPU potential by 65% (FPS gap: 87 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Xeon Gold 6240 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 37% | CPU Limits GPU 36% | CPU Limits GPU 31% | CPU Limits GPU 35% |
| 1440p (2K QHD) | CPU Limits GPU 47% | CPU Limits GPU 49% | CPU Limits GPU 43% | CPU Limits GPU 40% |
| 4K (Ultra HD) | CPU Limits GPU 63% | CPU Limits GPU 65% | CPU Limits GPU 63% | CPU Limits GPU 64% |
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) | CPU43% - 55% <> GPU68% - 73% <> | CPU45% - 55% <> GPU71% - 74% <> | CPU44% - 55% <> GPU73% - 83% <> | CPU37% - 51% <> GPU71% - 82% <> |
| 1440p (2K QHD) | CPU43% - 55% <> GPU68% - 74% <> | CPU45% - 55% <> GPU72% - 74% <> | CPU44% - 56% <> GPU75% - 83% <> | CPU37% - 51% <> GPU72% - 82% <> |
| 4K (Ultra HD) | CPU43% - 55% <> GPU74% - 94% <> | CPU44% - 56% <> GPU78% - 93% <> | CPU43% - 56% <> GPU90% - 91% <> | CPU37% - 52% <> GPU91% - 91% |
The Xeon Gold 6240 + GeForce RTX 4090 pairing runs this title with CPU utilization between 37% and 56% and GPU utilization between 68% and 94%. Xeon Gold 6240 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 74% at 1080p to 88% at 4K, while CPU averages move from 48% to 48%.
From a utilization perspective, this is a GPU-heavy load profile. At 4K (Ultra HD) Ultra, the GeForce RTX 4090 averages 91% usage (91-91%), while the Xeon Gold 6240 stays at 44% (37-52%). 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 48% and GPU 74%. At 1440p, that shifts to CPU 48% and GPU 75%, and at 4K it reaches CPU 48% and GPU 88%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.
4K (Ultra HD) Medium is the most balanced preset based on this dataset. It runs around CPU 50% (44-56%) and GPU 86% (78-93%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Xeon Gold 6240 remains stable for consistent frame delivery.
Current utilization does not show an urgent upgrade requirement for either component; the Xeon Gold 6240 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 CPU is 103% above and your GPU is 244% above the recommended specs. Ultra settings at 1080p, or High at 1440p/4K.
+103%vsrecommended
+244%vsrecommended
+144%vsminimum
+589%vsminimum
Yes, the Xeon Gold 6240 paired with the GeForce RTX 4090 can run Rust smoothly up to 1440p achieving around 75 FPS at Ultra quality. Your GPU is 244% above the recommended specs, and your CPU is 103% 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 Xeon Gold 6240 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 Xeon Gold 6240 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.
