This tactical shooter uses the AnvilNext 2.0 engine and features procedural environmental destruction, which can be taxing on the CPU. The Vulkan API helps older hardware maintain performance by better utilizing available resources. Siege is sensitive to RAM speed and latency. The HD Texture Pack can push VRAM usage over 6GB, so cards with 8GB or more are recommended for the best visual experience at 1080p or 1440p.
Actual FPS may vary based on RAM speed, background processes, and other system factors
Performance Report
At 1080p, all quality settings exceed 206 FPS, suitable for 144Hz+ monitors. At 1440p, all settings exceed 161 FPS. At 4K, all settings exceed 85 FPS.
The GeForce RTX 4090 is 611% above the recommended GPU (GeForce GTX 670) for Rainbow Six Siege. The Xeon E3-1240 v5 is 25% above the recommended CPU (Core i5-2500K).
The Xeon E3-1240 v5 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 high, the Xeon E3-1240 v5 sets the ceiling at about 100 FPS, while the GeForce RTX 4090 could reach 358 FPS. In this scenario, the CPU limits the GPU potential by 72% (FPS gap: 258 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.
Your Xeon E3-1240 v5 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 71% | CPU Limits GPU 66% | CPU Limits GPU 59% | CPU Limits GPU 54% |
| 1440p (2K QHD) | CPU Limits GPU 67% | CPU Limits GPU 63% | CPU Limits GPU 64% | CPU Limits GPU 64% |
| 4K (Ultra HD) | CPU Limits GPU 68% | CPU Limits GPU 68% | CPU Limits GPU 72% | CPU Limits GPU 72% |
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) | CPU95% - 100% <> GPU33% - 47% <> | CPU95% - 100% <> GPU33% - 47% <> | CPU40% - 69% <> GPU68% - 76% <> | CPU40% - 69% <> GPU68% - 76% <> |
| 1440p (2K QHD) | CPU92% - 94% <> GPU32% - 53% <> | CPU92% - 94% <> GPU32% - 53% <> | CPU21% - 59% <> GPU67% - 80% <> | CPU21% - 59% <> GPU67% - 80% <> |
| 4K (Ultra HD) | CPU92% - 94% <> GPU32% - 53% <> | CPU92% - 94% <> GPU32% - 53% <> | CPU21% - 59% <> GPU67% - 80% <> | CPU21% - 59% <> GPU67% - 80% <> |
The Xeon E3-1240 v5 + GeForce RTX 4090 pairing runs this title with CPU utilization between 21% and 100% and GPU utilization between 32% and 80%. Xeon E3-1240 v5 reaches high load in heavier scenarios, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 56% at 1080p to 58% at 4K, while CPU averages move from 76% to 67%.
From a utilization perspective, this is a CPU-heavy load profile. At 1080p (Full HD) Low, the Xeon E3-1240 v5 reaches 98% average load (95-100%), while the GeForce RTX 4090 remains comparatively lower at 40% (33-47%). This points to heavier CPU-side frame preparation work, but utilization alone does not define the FPS limiter.
At 1080p, averages sit around CPU 76% and GPU 56%. At 1440p, that shifts to CPU 67% and GPU 58%, and at 4K it reaches CPU 67% and GPU 58%. This shows that workload scaling is present on both components, with stronger pressure on the GPU.
1440p (2K QHD) High is the most balanced preset based on this dataset. It runs around CPU 40% (21-59%) and GPU 74% (67-80%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while Xeon E3-1240 v5 remains stable for consistent frame delivery.
Upgrade priority should be the CPU. The Xeon E3-1240 v5 reaches 98% average load at 1080p (Full HD) Low while the GeForce RTX 4090 remains comparatively underutilized, so a faster processor would improve frame-time consistency and top-end FPS.
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 25% above and your GPU is 611% above the recommended specs. High/Ultra at 1080p. Lower settings for higher resolutions.
+25%vsrecommended
+611%vsrecommended
+265%vsminimum
+1575%vsminimum
Yes, the Xeon E3-1240 v5 paired with the GeForce RTX 4090 can run Rainbow Six Siege smoothly up to 4k achieving around 85 FPS at Ultra quality. Your GPU is 611% above the recommended specs, and your CPU is 25% 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 Rainbow Six Siege, upgrading the CPU would have the biggest impact on performance. The Xeon E3-1240 v5 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.
Rainbow Six Siege 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.
Rainbow Six Siege requires at minimum a Core i3-560 (CPU) and GeForce GTX 460 (GPU) with 6 GB RAM and 61 GB storage. For the recommended experience, you need a Core i5-2500K and GeForce GTX 670 with 8 GB RAM. Your Xeon E3-1240 v5 and GeForce RTX 4090 both exceed the recommended specs, so you're well-positioned for a great experience.
These Rainbow Six Siege 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.
