Rainbow Six SiegeFPS onPhenom II X3 720&GeForce RTX 4090

Rainbow Six Siege

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.

Rainbow Six Siege - FPS Estimates by Resolution

Actual FPS may vary based on RAM speed, background processes, and other system factors

1080P
low40 FPS
medium40 FPS
high40 FPS
ultra36 FPS
1440P
low40 FPS
medium37 FPS
high33 FPS
ultra25 FPS
4K
low19 FPS
medium15 FPS
high12 FPS
ultra10 FPS

Performance Report

Rainbow Six Siege

GeForce RTX 4090 + Phenom II X3 720
🎮Visual Experience

At 1080p, frame rates range from 36 to 40 FPS depending on quality settings. At 1440p, frame rates range from 25 to 40 FPS. At 4K, frame rates range from 10 to 19 FPS.

Official Requirements

The GeForce RTX 4090 is 611% above the recommended GPU (GeForce GTX 670) for Rainbow Six Siege. The Phenom II X3 720 is 29% below minimum CPU requirement.

⚙️FPS Ceiling Analysis

At lower resolutions (all 1080p settings, 1440p (low/medium)), the Phenom II X3 720 sets the FPS ceiling. As graphical load increases at (all 4k settings), the GeForce RTX 4090 becomes the FPS-limiting side. The FPS ceiling is closely matched at 1440p (high/ultra).

💰Value Analysis

Approximated average price on current market:

GeForce RTX 4090:$1649
Official Launch Price: $1599
Phenom II X3 720:$64
Official Launch Price: $130

Combo price: $1713. At 1080p Ultra, this combo delivers 36 FPS, equivalent to 0.02 FPS per dollar.

ResolutionLowMediumHighUltra
1080p0.023 fps/$0.023 fps/$0.023 fps/$0.021 fps/$
1440p0.023 fps/$0.022 fps/$0.019 fps/$0.015 fps/$
4k0.011 fps/$0.009 fps/$0.007 fps/$0.006 fps/$

* Table values represent FPS per Dollar (higher is better)

Performance Limiter Analysis

Phenom II X3 720|GeForce RTX 4090

This section is based on estimated CPU/GPU FPS ceilings, not utilization percentages.

📈Analysis

At 1080p low, the Phenom II X3 720 sets the ceiling at about 40 FPS, while the GeForce RTX 4090 could reach 113 FPS. In this scenario, the CPU limits the GPU potential by 65% (FPS gap: 73 FPS). Overall distribution: CPU limits 6/12 cells, GPU limits 4/12, balanced 2/12.

Verdict

CPU Limits GPU

Your Phenom II X3 720 is the limiting side in the heaviest mismatch. This means part of the GeForce RTX 4090 rendering potential remains unused in those settings.

🧩Detailed Breakdown
1080p (Full HD)
LowCPU Limits GPU 65%
MediumCPU Limits GPU 56%
HighCPU Limits GPU 49%
UltraCPU Limits GPU 33%
1440p (2K QHD)
LowCPU Limits GPU 42%
MediumCPU Limits GPU 25%
HighBalanced
UltraBalanced
4K (Ultra HD)
LowGPU Limits CPU 23%
MediumGPU Limits CPU 43%
HighGPU Limits CPU 53%
UltraGPU Limits CPU 60%
Percentages show how much potential FPS of the stronger component is lost because the other component has a lower FPS ceiling.
🧠Methodology

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.

Rainbow Six Siege Requirements Comparison

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.

CPU - Phenom II X3 720
cpu icon
1,600
Your Score
MinimumCore i3-560
RecommendedCore i5-2500K
GPU - GeForce RTX 4090
gpu icon
38,112
Your Score
MinimumGeForce GTX 460
RecommendedGeForce GTX 670

Your hardware is below minimum requirements. CPU is the limiting factor (29% below minimum). Expect performance issues. Low settings recommended.

CPU

-76%vsrecommended

GPU

+611%vsrecommended

CPU

-29%vsminimum

GPU

+1575%vsminimum

Minimum Requirements
Video Card: GeForce GTX 460
Processor: Core i3-560
Memory: 6 GB
Disk Space: 61 GB
System: Windows 10 64-bit
Recommended Requirements
Video Card: GeForce GTX 670
Processor: Core i5-2500K
Memory: 8 GB
Disk Space: 61 GB (SSD)
System: Windows 10 64-bit

Frequently Asked Questions

1Can the Phenom II X3 720 and GeForce RTX 4090 run Rainbow Six Siege well?

The Phenom II X3 720 and GeForce RTX 4090 will struggle to run Rainbow Six Siege at smooth framerates. At 1080p Ultra, you can expect around 36 FPS which is classified as "playable". Consider lowering settings or upgrading your hardware.

2Is there a more cost-effective setup to run Rainbow Six Siege?

This CPU + GPU combo costs approximately $1713 ($64 CPU + $1649 GPU). Since the CPU is the main limiting factor, investing in a stronger processor will improve your framerates and overall value. For example, the Ryzen 9 9950X is a great upgrade option for around $649 (Rank #5 for value).

3Which component should I upgrade first to improve Rainbow Six Siege performance?

For Rainbow Six Siege, upgrading the CPU would have the biggest impact on performance. The Phenom II X3 720 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. GPU fully utilized at: 4k low, 4k medium, 4k high, 4k ultra.

4Does this setup support Frame Generation for Rainbow Six Siege?

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.

5What are the minimum and recommended specs for Rainbow Six Siege?

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 hardware falls below the minimum requirements for this game, which may result in poor performance.

6How accurate are these Rainbow Six Siege FPS estimates for the Phenom II X3 720 and GeForce RTX 4090?

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.