Honkai: Star RailFPS onFX-8120&GeForce RTX 4090

Honkai: Star Rail

Being turn-based, extreme FPS is less critical here. The game features high-fidelity models and uses considerable storage for audio and cutscenes. 8GB of RAM is recommended for smooth operation.

This game has a built-in FPS cap of 60 FPS

Honkai: Star Rail - FPS Estimates by Resolution

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

1080P
low60 FPS
medium60 FPS
high60 FPS
ultra60 FPS
1440P
low60 FPS
medium60 FPS
high60 FPS
ultra60 FPS
4K
low60 FPS
medium60 FPS
high60 FPS
ultra53 FPS

Performance Report

Honkai: Star Rail

GeForce RTX 4090 + FX-8120
🎮Visual Experience

At 1080p, all quality settings exceed 68 FPS. At 1440p, all settings exceed 69 FPS. At 4K, frame rates range from 53 to 82 FPS.

Official Requirements

The GeForce RTX 4090 is 279% above the recommended GPU (GeForce GTX 1060) for Honkai: Star Rail. The FX-8120 is 50% below minimum CPU requirement.

⚙️FPS Ceiling Analysis

The FX-8120 sets the FPS ceiling at all 1080p settings, all 1440p settings, all 4k settings, while the GeForce RTX 4090 still has headroom.

💰Value Analysis

Approximated average price on current market:

GeForce RTX 4090:$1649(updated 2/6/2026)
Official Launch Price: $1599
FX-8120:$40(updated 2/10/2026)
Official Launch Price: $205

Combo price: $1689. At 1080p Ultra, this combo delivers 68 FPS, equivalent to 0.04 FPS per dollar.

ResolutionLowMediumHighUltra
1080p0.054 fps/$0.049 fps/$0.046 fps/$0.040 fps/$
1440p0.060 fps/$0.052 fps/$0.049 fps/$0.041 fps/$
4k0.049 fps/$0.043 fps/$0.037 fps/$0.031 fps/$

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

Performance Limiter Analysis

FX-8120|GeForce RTX 4090

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

📈Analysis

At 4k medium, the FX-8120 sets the ceiling at about 72 FPS, while the GeForce RTX 4090 could reach 131 FPS. In this scenario, the CPU limits the GPU potential by 45% (FPS gap: 59 FPS). Overall distribution: CPU limits 12/12 cells, GPU limits 0/12, balanced 0/12.

Verdict

CPU Limits GPU

Your FX-8120 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 26%
MediumCPU Limits GPU 35%
HighCPU Limits GPU 31%
UltraCPU Limits GPU 40%
1440p (2K QHD)
LowCPU Limits GPU 16%
MediumCPU Limits GPU 25%
HighCPU Limits GPU 21%
UltraCPU Limits GPU 33%
4K (Ultra HD)
LowCPU Limits GPU 39%
MediumCPU Limits GPU 45%
HighCPU Limits GPU 41%
UltraCPU Limits GPU 40%
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.

📊Predicted Hardware Utilization for FX-8120 and GeForce RTX 4090

1080p (Full HD)

Low
CPU21% - 52%
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GPU38% - 49%
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Medium
CPU27% - 54%
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GPU37% - 50%
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High
CPU27% - 54%
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GPU37% - 50%
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Ultra
CPU28% - 54%
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GPU34% - 50%
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1440p (2K QHD)

Low
CPU21% - 52%
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GPU51% - 59%
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Medium
CPU26% - 53%
<>
GPU51% - 59%
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High
CPU26% - 53%
<>
GPU51% - 59%
<>
Ultra
CPU27% - 54%
<>
GPU48% - 59%
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4K (Ultra HD)

Low
CPU21% - 52%
<>
GPU61% - 64%
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Medium
CPU26% - 53%
<>
GPU61% - 64%
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High
CPU26% - 53%
<>
GPU61% - 64%
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Ultra
CPU27% - 54%
<>
GPU60% - 64%
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Performance Summary

The FX-8120 + GeForce RTX 4090 pairing runs this title with CPU utilization between 21% and 54% and GPU utilization between 34% and 64%. FX-8120 keeps significant headroom across presets, while GeForce RTX 4090 is utilized efficiently without persistent saturation. As resolution scales, average GPU load rises from 44% at 1080p to 62% at 4K, while CPU averages move from 39% to 39%.

Load Interpretation

The utilization pattern is relatively even. The GeForce RTX 4090 reaches 62% average at its highest-load preset, while the FX-8120 peaks at 41% average. This suggests a fairly controlled load distribution, but the actual FPS-limiting side should still be read from the limiter analysis above.

Resolution Scaling

At 1080p, averages sit around CPU 39% and GPU 44%. At 1440p, that shifts to CPU 39% and GPU 55%, and at 4K it reaches CPU 39% and GPU 62%. This shows that GPU demand scales sharply with resolution while CPU load remains comparatively stable.

Optimal Settings Recommendation

4K (Ultra HD) Low is the most balanced preset based on this dataset. It runs around CPU 36% (21-52%) and GPU 62% (61-64%), which keeps GeForce RTX 4090 well utilized without constant max-out behavior while FX-8120 remains stable for consistent frame delivery.

Upgrade Insight

Current utilization does not show an urgent upgrade requirement for either component; the FX-8120 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.

  • High GPU Load: You typically want to see High GPU Utilization (90%+) and moderate CPU usage when visual settings are heavy. This indicates the graphics pipeline is under strong load, but the exact FPS limiter should still be confirmed by the FPS ceiling analysis.
  • High CPU Load: If you see High CPU Utilization (85%+) paired with lower GPU utilization, the processor is handling a disproportionate share of frame preparation and game logic. That can point to CPU-side pressure, but it should not be treated as a direct replacement for FPS ceiling analysis.
  • Low CPU and GPU Load: If both CPU and GPU utilization are relatively low, it means the hardware is waiting on something else. This could be a game engine limitation, poorly optimized code, or an artificial framerate cap like VSync holding performance back. It does not mean both parts are equally fast in FPS terms.

Data generated by our Machine Learning engine trained on real-world benchmarks. Shows the approximate average utilization at each setting.

Honkai: Star Rail 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 - FX-8120
cpu icon
6,594
Your Score
MinimumCore i3
RecommendedCore i7
GPU - GeForce RTX 4090
gpu icon
38,112
Your Score
MinimumGeForce GTX 650
RecommendedGeForce GTX 1060

Your hardware is below minimum requirements. CPU is the limiting factor (50% below minimum). Expect performance issues. Low settings recommended.

CPU

-69%vsrecommended

GPU

+279%vsrecommended

CPU

-50%vsminimum

GPU

+2070%vsminimum

Minimum Requirements
Video Card: GeForce GTX 650
Processor: Core i3
Memory: 6 GB
Disk Space: 20 GB
System: Windows 10 64-bit
Recommended Requirements
Video Card: GeForce GTX 1060
Processor: Core i7
Memory: 8 GB
Disk Space: 20 GB
System: Windows 10 64-bit

Frequently Asked Questions

1Can the FX-8120 and GeForce RTX 4090 run Honkai: Star Rail well?

Yes, the FX-8120 paired with the GeForce RTX 4090 can run Honkai: Star Rail smoothly up to 1440p achieving around 69 FPS at Ultra quality. Your GPU is 279% above the recommended specs, and your CPU is 69% below the recommended requirements.

2Is there a more cost-effective setup to run Honkai: Star Rail?

This CPU + GPU combo costs approximately $1689 ($40 CPU + $1649 GPU (Rank #77 Value)). 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 Honkai: Star Rail performance?

For Honkai: Star Rail, upgrading the CPU would have the biggest impact on performance. The FX-8120 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.

4Does this setup support Frame Generation for Honkai: Star Rail?

Honkai: Star Rail 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 Honkai: Star Rail?

Honkai: Star Rail requires at minimum a Core i3 (CPU) and GeForce GTX 650 (GPU) with 6 GB RAM and 20 GB storage. For the recommended experience, you need a Core i7 and GeForce GTX 1060 with 8 GB RAM. Your hardware falls below the minimum requirements for this game, which may result in poor performance.

6How accurate are these Honkai: Star Rail FPS estimates for the FX-8120 and GeForce RTX 4090?

These Honkai: Star Rail 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.